“What can I do to keep my batteries longer?” many people ask. As folks stay fit by refraining from smoking, lowering sugar intake and exercising, so also can battery life be extended. There are no hard numbers as to how effective good care is, but the proof is in examples where packs were issued as personal goods as opposed to stock items. Personal care almost always wins
Table 1 summarizes how to prolong battery life through proper attention. Because of similarities within systems, the chemistries are limited to lead, nickel and lithium.
| Battery Care | Lead Acid
(Flooded, Sealed, Gel, AGM) |
Nickel-Based
(NiCd, NiMH) |
Lithium-Ion
(Cobalt, Manganese, NMC) |
|---|---|---|---|
| Best way to charge |
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| Charge methods |
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| Discharge |
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| How to prolong battery |
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| Transport |
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| Storage |
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| Disposal |
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** Topping charge is applied on a battery that is in service or storage to maintain full charge and to prevent sulfation on lead acid batteries.
| CAUTION | Under no circumstances should batteries be incinerated, as fire can cause an explosion. Wear approved gloves when touching electrolyte. On exposure to skin, flush with water immediately. If eye exposure occurs, flush with water for 15 minutes and consult a physician immediately. |
Last Updated: 29-Oct-2021
Batteries In A Portable World
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On June 25, 2019, Ovidiu Sandru wrote:
Have you ever heard about Chargie? It's the only device that does external charge limiting on Android phones. Just look it up on Google: "chargie stick"
On June 14, 2019, Tim H Goymerac wrote:
Can a Li-ion battery be charged via a solar panel? A B&D drill battery LBXR 1512, 12v, slide-in battery. To be used to power a solar tracker motor.
On February 21, 2019, Vasanthi Satthi wrote:
Is there any chance without connecting into charger having a battery throughout the mobile gets into problem
On December 25, 2018, Manon wrote:
Hi, I'm kind of a tech-idiot so, is using the phone while charging bad, yes or no? And when should I charge until the percentage reaches where?
On December 22, 2018, Charles wrote:
Hi, I have a MAHA Powerex 9000 charger and it works great but I find that the batteries are getting really hot when charging 2700Mah > Charge 1300mah Is putting a small air blower/ fan to shoot on the batteries will be a good practice? They are now charging and they are being cool while at it. Is this preferred? Thanks!
On December 20, 2018, Ben wrote:
Can I charge d-size nonrechargeable batteries as long as I keep them cold?
On December 16, 2018, Sylvain Alain wrote:
Hi, I would like to know what’s the difference between an iPhone battery that is not supporting quick charge and a battery from an android phone that is supporting quick charge 3.0 (qualcomm) for example ? I don’t understand how is possible for a one plus 6T McLaren device to charge from 0% to 50% in 20 minutes. iPhone charger is basically 1a at 5v and for example the McLaren charger is a 5v at 6amp. I’m pretty sure that the one plus battery may heat up big time because the charger is push really hard and fast energy. The charger technology in the mobile phone is progressing each year.
On October 30, 2018, Steph Wentworth wrote:
Hi. If I have an odd number of AA batteries, can I pair it one that is empty of charge with one of the exact same spec and type that has been fully charged, without damage to either?
On October 29, 2018, Martins wrote:
For two years the 4110 mAhr 7.4V pack on a new ASUS notebook was rarely discharged below 92%. Most discharges were less than 2% while transporting it on standby for about 200 occasions. Recently when running it on battery power for 40 minutes, the battery LED began incessantly flashing amber/green. I used the computer daily for another week before detecting additional discharge. I tried running the computer for an additional 3 hours on battery power, reducing the charge to 14%. I have since bypassed the electronics inside the battery and am charging it directly at 0.3A. I had 7.8 V. After 7 hours it was 8.4V. I plan to charge it to the 8.7 Volt limit. Is it bad electronics?
On September 17, 2018, John Harvey Harvey wrote:
Nothing in your response have me information about disposing of a battery charger.
On September 15, 2018, John Harvey Harvey wrote:
I did not receive any kind of information regarding my question about disposing of a battery charger.....
On September 14, 2018, John Harvey Harvey wrote:
Thebattery charger for my golf cart no longer works. Do I need to do anything special to dispose of it?
On September 11, 2018, Sid wrote:
I want to ask what will happen if i do not use gel batteries for 6 months without charging them. Does this affect anything with batteries without using them and charging them.
On July 28, 2018, Wade Bolt wrote:
Have 2 12v batteries on fishing boat. After charging boat will not start. One battery is warm and one is cold. What battery is not working
On March 31, 2018, Anita Memezi wrote:
I have a new LG K10 and i dont know how i should charge it, will i damage my battery if i top up power while there is still some
On February 15, 2018, Akshay Nagar wrote:
I kept my laptop (with battery)plugged in for normally 3-4 hours a day for a month for working on very small task (like reading only in which there was negligible heating in my LapTop ) ,on the wrong advice of my friend. Can you tell me that how much I had damaged and can I improve it again by keeping it charged between 40%-80%.
On January 9, 2018, Bob wrote:
Will a lithium-ion laptop battery discharge if the laptop is shut down and the charger is left plugged into the laptop, but is not plugged into the wall socket power? That is, can the laptop battery reverse discharge thru an un-powered charger?
On December 20, 2017, Banananutbread wrote:
Can i charge a 9.6v 1309mah lithium ion rc car battery on a fast charger for nimh and nicd batteries? it supports 9.6v 1600mah batteries.
On December 9, 2017, Rick54 wrote:
Could I use a bike powered charger to charge the battery for my e bike it's not a li ion battery just a regular one. Trying to go cross country on an e bike trying to figure out how to keep charging it. Would that work does anyone one know an easy way for a lame in to do so?
On November 21, 2017, dan oshea wrote:
Glorianne and Lynne; re: your enquiry about battery capacity increasing from 900 mAhrs to 1200mAhrs. The relevant number in this case is that both batterries are 3.7 V dc. So it is perfectly safe for you go ahead and use the new battery. You should find that you will get about 30 % longer between charges; all else being equal. The unit mAhrs refers to how long the fully charged battery at 3.7 V dc is able to deliver 900, or 1200 milliamps, so 1.2 Amperes for an hour, before becoming fully discharged. The old one could only average 0.9 Amperes over the hour. It refers to the capability of the battery to deliver power. As long as that power is delivered at the rated voltage of your device; 3.7 V dc in this instance, then it is suitable for use with that device.
On October 21, 2017, Rick wrote:
My dell laptop battery has a mind of its own and refuses to accept firmware settings 80 percent of the time.
On July 27, 2017, Yura wrote:
Can I Ieave my computer plugged-in or will it kill the battery? How often I should let the battery discharge to keep it healthy? Some say it will die in a year if I don't use it! For example, this Apple manual doesn't answer my worries: https://www.apple.com/batteries/why-lithium-ion/ :( So, I came here and I have read your comments people. I understand that Zeeshan recommends (thank you Zeeshan for your answers...) ... that Zeeshan recommends to keep the battery charged if it's not a problem and once in a month let it drain to 10 % Am I correct? :)
On June 7, 2017, Andrew wrote:
I know fast chargers only recharge batteries to 70%, so my question is this: is it ok to use a fast charger up to 70%, then use a regular charger for the remainder to get the full charge out of the battery, or will I be degrading the life of the battery? Thanks!
On April 10, 2017, manimaran wrote:
what will happen when we connect exide 12v/200Ah lead acid battery and prestolite 12v/ 200Ah lead acid battery in series to achieve 24v to start the diesel engine (note : incase both having different charging current, electrolyte volume & CCA ?
On April 1, 2017, shaik ziya ur rehman wrote:
Some body says that if your phone shows 100% it means that the battery charges to70% is it true
On March 25, 2017, mdog wrote:
Hey battery dudes and dudettes , if you have a battery operated drill with a 67v LI po battery on a charger, and you switch the device on while charging (drill), does it damage the battery?
On February 22, 2017, Edwin Eche wrote:
Can Absolyte batteries be constantly charge with rectifier? I used absolyte batteries which is constantly charge with rectifier and does not last for ten hours after full charge what is the causes?
On December 3, 2016, Paul Jones wrote:
I have a KAITOL solar radio. It has a Lithium battery. It didn't supply an AC charger and I am hesitant to use an incorrect one. The Kaito company is absolutely useless to respond to my inquiries. Is it possible to get some guidance PLEASE
On October 16, 2016, ik wrote:
Is it possible to used UPS to charge or extent time for 2hr, for my rechargeable Fan when light goes off at night
On September 14, 2016, Saad Ali wrote:
I have a question. will a cheap charging pack for iphone 5 effect the battery life like "pocket juice". I searched every where but i did'nt find the answer thanks.
On September 9, 2016, DenisWH wrote:
I am fitting an LED module to an outside burglar alarm to give an operating display usually running on a 9v alkaline PP9. I want to power from a 9v DC mains adapter but would like to strap a 9v rechargeble across it to cover the event of mains failure. The adapter has settings and I can set it almost on 9v but for a few mV. Would it be ok to leave this arrangement in place?
On August 23, 2016, Anne wrote:
Hi there, After various trial, Surprisingly, the power bank reached full charge (i.e. the LED light turned white) only twice. In the two times it was not connected directly to power outlet but rather through USB of a TV or CPU of desktop PC. These two options are not easily available on a trip or hotels and in so many countries the power outlet is 110. So please advise what can I do taking into consideration that my power bank is newly bought.
On August 3, 2016, Baoran wrote:
They say that it is better not to use the battery while it is recharging. How much it helps with how many charge cycles battery lasts if you always turn off your mobile phone while it is recharging?
On July 19, 2016, Bamboo wrote:
Just bought a new replacement battery for hp laptop. Lithium. Anyone know the protocol for charging replacement batteries? I didn't do to well on the original battery. Thanks
On July 10, 2016, samshina224 wrote:
i have acer pc that not more than 30 minuets how i control it
On July 5, 2016, jisan wrote:
I bought a new Asus 202s notebook, can I use it connected to AC even it's battery is full charged? Can I use my notebook by connecting it always in AC even it is charging? will it be bad effective if I use my notebook keeping it connected in AC always,, Thnx in Advance.
On June 23, 2016, Katie Sears wrote:
We recently took our Asus laptop with us to my brother-in-law's house in Iowa. We live in Nebraska. One thing my husband and I both noticed is that even though we were using it without the cord, the screen did not dim like it does when it's not plugged at home, AND the battery lasted for hours. The low battery light comes on after only a few minutes when we use it just off the battery at home. Because of these two things, we rarely use it at home without plugging it in. As soon as we unplug it, the screen dims. Just curious as to why the battery lasted so long at our brother-in-law's and why the screen stayed bright without it being plugged in there. Any ideas on this?
On March 30, 2016, James Crieta wrote:
Hi there. I have an ASUS K455L laptop which I have bought last December. It has a built-in battery. I am an active gamer, so with that, I would like to ask (I HOPE I GET ANSWERS) if should I leave my laptop plugged in when playing games? What I currently do is that I charge my laptop up to 80% (sometimes full) and then unplug it. Then when it reaches < 30%, I plug it once again and wait for it to charge back to 80%. Am I doing it right? Please I hope I get replies to my question.
On March 4, 2016, SanDesh wrote:
I have some questions although i got some of my answers.. 1.Which one's better?? If i charge my DELL laptop to 100% and then plug out and work till 20% OR I keep on charging it even after 100% and use it.. 2.does full charging the battery cause damage to the battery?? 3.Is it good to charge my battery when it's 20% or 50%?? Thanks in advance...
On March 2, 2016, Mohammad Khaled wrote:
Can I use my laptop while charging? or is it better to shut it down until it finishes charging then use it?!
On December 26, 2015, Jeffrey weaver wrote:
My phonez battery is shot (as in very slow charge and fast dieng) I have a HTC one m7, i tripled the damage yestarday by my using a faulty wire it was rapidly charging then not, charging then not. Ever since this catastrophe my phone no loner charges fast with my other chargers. What do I do to fix the battery?
On October 28, 2015, zeeshan wrote:
to edison: never heard of such a thing to jeremy: no particular danger other than the series connected batteries could have a very large added up voltage to jessa: modern laptops are equiped with charge controlled circuits so no problem to ish: same for all lithium ion batteries
On August 24, 2015, Edison wrote:
Why is that a battery should not charge in a dark room?
On August 24, 2015, Jeremy Tatlock wrote:
I have a quick question. Can batteries that are connected in series but not connected to a load create a fire hazard or some sort danger? I know the cells will continue to deteriorate without a charge but I just want to know if there is the potential for a larger problem that I am not seeing?
On June 29, 2015, Geoffrey Tloubatla wrote:
I have a 12volts deep cycle battery that charges up to 11.59 volts. What could be the problem.
On June 9, 2015, jessa lorania wrote:
i have a new laptop and i charged it less than 5 hours on first charge, is it bad? what should i do?
On February 6, 2015, Ish wrote:
Is this applicable to android batteries?
On January 22, 2015, Zeeshan wrote:
no there is no problem in it
On January 22, 2015, abdul wrote:
I hv a question please. Can I use dell laptop with plugging in charger always? Is there any problem in battery? Thanks
On December 7, 2014, Zeeshan wrote:
Old laptops had this problem that if u leave them on power, they would ruin the battery But these new machines have a very efficient over charge protection system Now i know its true that the 80-40% story is true and is 90-20% to be exact. But i advise u the best possible way of applicable solution that is U use the laptop while on charging normally, and must discharge it fully below 10% once a month to keep ur battery healthy. Thank u
On December 7, 2014, cherie wrote:
Hi, I have read conflicting advices on battery care and would like to seek clarification. I am using Lenovo X1 Carbon and mostly work from home and office with a stable power supply. You mentioned earlier in the comments that it is not harmful to the battery to leave the charger on while using the laptop and allowing the battery to remain fully charged. (Is this okay in the long run eg, constant usage with the charger on for 8 hours a day?) Also, I read from other sites that it is better to leave the battery with 40% - 80% charge (ie charge till 80%, unplug the charger and charge again at 40%) Is long term partial discharge harmful to the battery? Please advise which method is better for the battery or let me know if you have other recommendations. Thank you so much!
On November 11, 2014, Zeeshan wrote:
Then u should contact the manufcturer if the problem still prevails Coz 4 cell batteries are also v.gud indeed
On November 11, 2014, paris wrote:
Thanks. But i did it as you said and problem is it didnt work more than 2.30
On November 11, 2014, Zeeshan wrote:
Forget about the charging history now Just charge it till the battery is full And use it Will work just fine
On November 10, 2014, paris wrote:
hi. i have a lenovo g510. i didnt charge it for 12 hours the first time i used it.so now, battery work for about 2.30 hours when it supposed to work for 4.30 hours (for medium use). now that i charged it for several time (when it was 30% or lower) is it ok to chrge it for 12 hours? thanks
On November 1, 2014, Zeeshan wrote:
well i checked also ur rite the timing is great by the way
On November 1, 2014, tushar wrote:
I might have but just checked full specs on dell support and it says 4c battery...so
On November 1, 2014, Zeeshan wrote:
well i have a doubt about ur 4cell battery coz there are normally 6, 9 or 12 cell batteries in all laptops u have mistaken the 6 for 4 cell i assume however thats great timing becoz my inspiron is a corei5 touch screen and goes 4.5hours max on VLC player on movies
On November 1, 2014, tushar wrote:
Thanx again zeeshan... And tess I remember askin same questions fron diff. People and always get different answers so...can u tell me what should be battery backup after full charge(I have dell inspiron 3542 4cell 40w battery).it gives about 4hours till its down from 100to20% after im continuously plaing movies....
On November 1, 2014, Zeeshan wrote:
short and to the point ans to your questions:P being an electrical engineer and programmer 1.ans: u can fully charge ur laptop, it will be off no harm to the battery 2 ans: yes there are fixed no. of cycles (about 3000+ cycles) but its no absolute rocket science that u are using ur cycles when charging randomly, but in short u r upto some extent. 3 ans: i have an inspiron 1545, an inspiron n4050 and a inspiron 14r5421 so there is no way to decrease the heat if u r performing heavy operations. just be careful not to block the fan 4. i hope i did answer upto ur level 5.its 100% ok using laptop while charging or while fully charged
On November 1, 2014, tushar wrote:
Well ...after reading the entire discussion being a noob I was able to understand most of the things clearly but some doubts remains still unclear 1.without any sort of repititive answers plz tell me should I fully charge my dell inspiron notebook everytime time I put it on charge(I asked this because it is written above that full cycles are not required)....also if I dont have any problems related to how much time is taken for full charge. 2.i have read at most sites that li-ion batteries have fixed no. Of charge cycles so if I just charge it randomly wouldn't its cycles be reduced...on the contrary to which full charge cycles will increase life( i mean chrging when battery is about 20% untill its fully charged every time). 3.also while perForming heavy tasks the laptop gets heated hence affecting battery..so please suggest some techniques so I can easily do heavy-TasKiNg《●)....And also doesn't affect my battery. 4.pLEase do answers my 1. And 2. Queries. ..as tgey r the most important ones. 5.And...is it ok if I use my laptop in between charging. .... A big thanx in advance to all the guys and girls involved in this site....
On October 27, 2014, Zeeshan wrote:
Well it is harmful for ur fone battery (this fast charging and fast discharging) because ur battery has a limited number of cycles and according to u that u are using 2 cycles per day However its not that big of a deal coz phone batteries are cheap Ur welcome
On October 27, 2014, ronil wrote:
Need an advice. I am using my android phone 3.5 hrs straight game leaving 15%-20% juice. after that i charged it to 100% always. Then after fully charged, rest for 10 mins and then play again straight 3.5hrs. In other words, i am charging my phone twice a day. is that okay? Thanks in advance.
On September 11, 2014, Raghu wrote:
Thanks for your help, it was really helpful for me to have my new Laptop Battery understand and how to maintain.
On September 10, 2014, Zeeshan wrote:
i meant that you can keep the charging of the laptop ON whenever u have AC supply at ease these lithium ion batteries have charging cycles which best work when the battery is charged slowly, charged above 90%, used till below 20% (or even 10%)...never fully discharge the battery what i meant with fast discharge was that when the charger is not available dont play heavy games or run heavy softwares that drain the battery very fast in short, fast charging and fast discharging is harmful for battery and these laptop batteries will last upto 3 years atmost with full care
On September 10, 2014, Raghu wrote:
Thanks, So you mean no need to keep the battery discharge at frequent intervals? So you mean even if we try to discharge it regularly the Batterly life lasts for only 3 years? Also, just confused with your comment "Just avoid fast discharge/drainage of battery", do you mean I should not discharge it completely?
On September 10, 2014, Zeeshan wrote:
U cab keep the ac charging on at all times when available. Ur laptop battery will however go down after 3 years.... No worries Just avoid fast discharge/drainage of battery
On September 10, 2014, Raghu wrote:
Hi, The discussion here was very useful as I got new laptpo which has Lithium Ion Battery. I have gone through all the comments while I got most of the answer but I did not find the exact answer to suit my needs, here is my concern can you please let me know how to handle this situation? I work on Laptop most of the times from Home, there isn't power issue however the power oges off all the sudden without any notice as there are unschedule power cuts. Now as I use laptop most of the times it is ok to keep the AC Power plugged in whlile Battery inside? If yes then shoudl I keep discharging Battery manually by switching off power? Please let me know how to handle this situation? 1) Keep working with AC Power on for continously for a month and then discrhage the battery fully and then continue or 2) Keep working with AC Power and keep discharging the batter partially everyday? and then again continue AC power? Just guide me on this, this would be a very valuable help for me.
On September 3, 2014, Zeeshan wrote:
Yes u an leave the charging on if the battery is not dry battery and the charger isnt available all the time but i recommend u buy a 12 v over charge protection kit or u can make it urself Its really easy and cheap to buy or build Buy a trickle charger if u do so
On September 3, 2014, Riad Moucarry wrote:
Hello, I have a car battery for home use, 12V 55 Ah, attached to it are LED for room lighting and a ADSL router to access the internet. My question, can I keep the charger always attached to the battery in order to charge it whenever the 220V is available OR that is not good for the battery? Best regards.
On August 23, 2014, James Rv. wrote:
Is it trure that charging your cell phone while making a call could cause your device to explode?
On June 25, 2014, dosmastr wrote:
NI-CAD avoid full discharges? If you only kill it 50%, then charge it, thats how you end up with memory. I have always been told run a nicad until its DEAD DEAD DEAD otherwise you will develop a memory
On June 20, 2014, Cornelius wrote:
Is it good to play games or use the laptop while charging the battery ....plz help me ....!!!!
On April 20, 2014, Zeeshan wrote:
If u disposed a battery in water then the ph of water goes towards 0 but the solution is very dilute so in short no much harm done
On April 20, 2014, 352 wrote:
What quantity of water is damaged if I dispose a battery there?
On March 2, 2014, Steven wrote:
So I have started making pouch cell batteries and am having issues charging them. I put the electrolyte in (glove box) and then do the final seal. I connect it to a battery analyzer and set it to cycle (formation?). But it only gain capacity on constant voltage charging, and when it's on either constant current charge/discharge, it immediately stops and goes to the next step. What could be going wrong? Thanks!
On December 16, 2013, Zeeshan wrote:
Renjith It really doesnt matter Becoz if u read the instuctions from ur ac charger U will see that both ac charge abd the usb port of ur pc gives out 5V dc It is advisable to use ur pc usb port as a charger if u have fluctuating AC supply at ur home
On December 16, 2013, Renjith wrote:
is it advisable to charge the battery of android mobiles using data cable connecting to a laptop or PC without directly connecting to AC power supply.
On October 9, 2013, Jhonsone wrote:
I've a buildin battery notebook can I leave it pluggin when using?
On May 8, 2013, windie wrote:
hello, just wanna ask, I have just bought new mobile phone with new battery, and after a week, I couldn't charge it to full (100%), it would start charging slowly after 90%, not even 1% per hour, is it normal? or should I get new batteries? I did read that for Li-ion battery it would be best to not charge fully, simply wonder if my battery is broken or something
On April 16, 2013, Zeeshan wrote:
No its aafe to keep ur mac book charged All laptops have an internal tripper that will turn off caharging to the battery automatically when full And yes when the charger is connected the battery wil not drain It will use power from charger
On April 15, 2013, Sara wrote:
Is it bad if I keep my Mac laptop always charged? (Like it's always connected to its charger) Does it drain from the main battery life after awhile or would you just use the electricity coming from the charger?
On February 26, 2013, Carlos Paixao wrote:
I find it article very awesome, but Its kinda confusing to me. The other article was saying that we might avoid keep batteries on cradle charging when it gets full charged for keeping it away from parasite cycles or mini cycles. But here you said for li-io "battery can stay in charger". So what is the real, I can keep it on dock or travel charger while using it or no? Consider LI-IO and LI-PO battery for this.
On February 23, 2013, raj wrote:
should the charger be connected even if battery is fully charged?
On October 31, 2012, Amzi Java wrote:
in the beginning of this year, my laptop battery used to stay for up to 2 hrs. now, in Oct, it barely lasts up to 55mins. please, give me some practical tips on the use of batteries, especially for laptops and torchlights, to ensure their long life.
On September 28, 2012, murray c wrote:
The following advice is in a portable radio users manual. The batteries are Ni Mh which do not have memory effect so why discharge to condition and does constant trickle charge age battery? • Leaving the battery on charge You can leave a battery/radio in the charger once charging is complete. Leaving a battery in the charger will not overcharge or damage it. You can remove a battery/radio from the charger at any time without harming the battery, the radio, or the charger. When you return the battery/radio to the charger, charging is automatically resumed. • Conditioning NiMH batteries ‘Condition’ a NiMH battery every three months to extend its shift life. Conditioning enables a battery to hold its charge for longer. To condition a NiMH battery: ■ Leave the radio switched on and ignore the ‘low battery’ warnings from the radio. When the radio switches itself off, the battery is fully discharged and ready to be recharged.
On September 10, 2012, BR wrote:
Is it safe to charge a smartphone while it is in an Otterbox case? I have heard that will cause excessive heat which will damage the battery or shorten its lifespan? Thanks for your help..
On September 1, 2012, Muhammad zeeshan wrote:
I want to charge a battery which is being used by a DC motor at the same time What should be my precautions? And will the polarity of the mOtor be reverse too in case of charging? At what voltage should i charge the battery of 12 volts If its a normal acid water battery?
On August 17, 2012, Haz wrote:
Hi my laptop charger was damaged about two weeks ago and the charge on my laptop was completely gone I finanly found the same charger it's been nearly 12 hours since iv been charging my laptop and it still does not turn on how long would I have to charge it my laptop has been dead for about two weeks now. Thanks
On July 18, 2012, Eswar wrote:
Sir, Can I always Use my Laptop on AC power, after removing my Exhausted Battery? Will it make any harm to my Laptop? Pls advise
On July 16, 2012, narbada singh wrote:
sir, please explain me weather i should keep charging my laptop while using it or remove it once it is charged
On July 5, 2012, jaiprakash wrote:
after given freshening charge of Ni-Cd battery always taken 10 amp current why???
On July 1, 2012, SAURABH AWASTHI wrote:
If someone overfilled the sealed Ni-Cd batteries,what are the danger may be there?
On June 27, 2012, Florence wrote:
What's the danger of leaving my camera still charging if it's already fully charged. PS:It still works but I cannot upload photos to my laptop anymore :/ Please help me!
On June 23, 2012, ishmAEL JAFI wrote:
is it ok to charge phone battery using the universal charger, the one that charges the battery out of the phone? And can i connect a charger direct to the back of my phone if my phone no longer charges thru the port? Thanx gguys
On May 14, 2012, Adrian wrote:
Don't ever use direct power to your laptop if your battery removed from laptop. If the house electricity sudden off, it will give damage to laptop motherboard. My last laptop is useless now because the motherboard is not functional now. It was because i only use direct power, and when the electricity suddenly shut down, it also shut my laptop. then when i open it back, the motherboard crash.
On March 1, 2012, John Paul C. wrote:
There are some questions here that were not being answered. The msot common question is "Is it OK to use the charger while still the battery is connected and being USED"?. Well, for me, just a piece of an advice, let the notebook charge battery while you are using it, even if it is fully charged. That is if the battery is Li-Ion. That's one of the features Li-Ion has compare to those NimH or NicAD. That is how I prolonged my battery from my Toshiba for almost 3 years now, going 4 years.
On February 24, 2012, teresa boling wrote:
Can you tell me what kind of battert is in a lap top.Lead acid,Nickel based or Lithium? its a new hp. thanks teresa
On February 23, 2012, jollyoger wrote:
VTLA or Vented Type Lead Acid battery should be delivered DRY CHARGE. Since you will transport it to other place I think you need to get clearance to concerned environmental agencies of the countries where it will be delivered. It is the standard procedure to make sure that the batteries are brand new and not second hand. There will be no basis for the end user to know that the batteries have been stored for a long time.
On February 22, 2012, aj wrote:
di kaya maless ang capacity of that?? while using it then it is fully chareg??
On February 22, 2012, aj wrote:
is it uk if you used your netbook full without unplugging then used it? ahm,. i unplugged it after using.
On February 18, 2012, rajvi wrote:
Why mobile battery is of rating 3.7 v?
On February 6, 2012, roger samala wrote:
we ordered Stationary Industrial Single cell Vented Type Lead Acid (VTLA) batteries 900 AH. Since the standard procedure in shipping VTLA is in dry charged condition and when we received the shipment it is already filled-up with electrolyte solution from the factory (France) and delivered here in Philippines. Upon inspection of the batteries we found formation of white powder at the bottom of the plastic casing. Does this indicate that the batteries are old stock?....have been in stock with electrolyte for months... we are using 48VDC for our Repeater sites and this is the first delivery (replacement of of our old batteries) consisting of 96 sites. Question >>> Do we have to accept or reject said said shipment ?
On January 9, 2012, j.sri lakshmi wrote:
is it possible to charge a battery using micro wave?
On January 3, 2012, ali najafi wrote:
i still can't find out how to charge my lithium battery for the first time?some of my friend told me to charge it 12 hours and some others say just charge it for 3 hours?how could i know what's best for the first time?
On December 9, 2011, Guillaume wrote:
Can anyone answer my question ? I am wondering how the temperature is affecting the internal resistance of the battery. I know that a lower temperature will raise the internal resistance and vice versa. My question is more the "by how much" part. For instance, at 25°C, the internal resistance of my lead acid 12V 16AH battery is 4mH. What will be the internal resistance of that battery at -40°C ? Pretty sure it depends on the battery's manufacturer but is there any way to estimate this value other then testing at -40°C ?
On November 20, 2011, Ryan wrote:
I bought 2900mAh AA batteries and a 200mA charger. After 8 hours the led's on the charger go off and it switches to a trickle charge. When I do the math it says they need to charge for 17 hours. Do I reset the charger to charge through another 8 hour cycle or do I let it continue on the trickle charge for the remaining time? Thanks
On November 18, 2011, omed wrote:
i bought laptop hp dv5 before 3 years ago ,so right now during using the lap top an alarm comeing talking about that my battrery should be replacement ,and befor i were recharging in when it need that ,otherwise i were used it without pluging.so could you guide me to the right way. thanks
On November 15, 2011, prince wrote:
I use acer inspire 5516...my uncle gave it 2 me. The battery take an hour to get fuly chargd(dn't knw if its geting weak). wen its ful i stil leave it on AC til i'm tru. Wen i unplug it, i use d main battry to 20%. Is it advicable?
On November 12, 2011, Charles Fisher-Post wrote:
My UL V-2833 Class 2 Battery Charger does not work (or, at least the charging lights don't turn on), and I never even used it once! I put the batteries in the unit in pairs, like the instructions say. However, when I traveled with it, I stored the batteries in the unit itself, unplugged of course. My question is--can storing rechargable batteries in the unplugged recharging unit cause it to break? That's the only explanation I can summon, other than faulty mechanics.
On October 31, 2011, Vanessa wrote:
I read somewhere if I have a chance to charge the Li-Ion battery, I should just do it. So for those batteries basically always leave them on the charger? So, I have a Dell laptop with Li-Ion that I got last year. I have a 6 cell and 9 cell battery. Should I keep my battery constantly charging or should I go to 100% and unplug it and then charge it again when it says battery is low or maybe half way? Is it the same for my Droid 3 phone Li-ion battery? I charge it every night and it doesn't get below 50%, 40% or 30% rarely.
On October 29, 2011, Boris wrote:
To Lola: The Li-ion battery?If the power is not full, just charge it. When it's full, ordinarily it would stop charging. See the table atop for deails.
On October 27, 2011, Lola wrote:
Hi, just got a new camera with li-ion battery and was wondering if i should charge it before i use it (and if so, then for how long) even though it says it's fully charged? I remember having to charge cell phone batteries for many numbers of hours before use in the past.
On September 19, 2011, Boris wrote:
To Randi James Sometimes battery-powered devices use battery power even they are charging, so they “drain” batteries when charging. Some don’t, they use external power source such as power from the charger, then these kinda devices don’t “drain” batteries when charging. “Sometimes battery-powered devices use battery power “ I mean devices that always powered by battery power when charging.
On September 16, 2011, Randi James wrote:
I have few quetions on charging cell phone batteries. Is it gppd tp keep unplugging and plugging back in the phone while it is being charged? (like to move it to different spot) or should you plug it in and leave it untill it is fully charged. Is it good for the battery to just charge it for few minutes at a time, just enough to last short bit. (battery is low so charge for 30 min to get some charge on it, then keep doing that over and over.)
On August 14, 2011, Lynn wrote:
I have the same question as Glorianne too. My camera uses the battery NB-4L, 3.7V, 760mAh(Li-on). If I use a higher capacity battery, NB 4L, 3.7V 900mAh (lion)] - will it damage the camera? Thanks.
On July 21, 2011, Glorianne wrote:
I have one question which I would like some assistance on: My camera uses a battrey NB-4L, 3.7V, 760mAh(Li-on). Now I would like to replace the battrey as the lifetime of the battrey has become too short. Would a battrey with a higher capacity [NB 4L, 3.7V 900mAh (lion)] be used on the camera or will it damage the camera (if it works at all cause I have no idea). I would appreciate if someone could kindly advice on this. Thanks in advance!
On July 13, 2011, Egberth wrote:
i like that web ,it has been answered my question thanks a lot
On June 4, 2011, Angel wrote:
apply some charge after a full discharge so what should I do? discharge until 20%, then plug in the A/C immediately and countinue using, or shut down, let it cool, then charge?
On May 20, 2011, Tommy wrote:
is it okay to use laptop directly from AC power? is there any downside other than there’s a scheduled power off is it right that removing the battery is the best way to prolong life??
On May 17, 2011, Christine wrote:
Does brand matter in terms of battery/charger interaction? I need to buy a charger for a CRV3 battery, and I was wondering if there is a problem charging generic batteries with a Kodak charger and vice versa.
On April 19, 2011, Rob wrote:
My laptop has an option to turn off the battery charger while remaining plugged in (and operating). While I understand removing the battery is the best way to prolong life, I prefer to keep my battery in the laptop so I don't lose work in case of a power glitch or failure. Each time I start my computer, it reminds me my battery is not being charged and tells me how much charge is left. In two weeks, it has already dropped to 88% charge and my computer is brand new. My question is, if I want to prolong the batteries life, at what charge level should I turn the charger back on? How long would you expect it to take to reach that charge level?
On April 19, 2011, fhhuber wrote:
Regarding partial charging a Li based battery: In Radio Control applications the "LVC" (low voltage cutoff) is often based on the voltage of the pack when it is plugged in. Thus a partially charged pack can result in excessively low cut-off which will damage the battery. Always fully charge a battery used to power a radio controlled model. Also note that LiPo is easier to damage through improper charging or over-discharging than Lion or LiFe/LiFePO4. Thus this page needs updating and separate columns for the different types of Lithium based cells... or a separate page just for Li based cells.
On March 12, 2011, samir wrote:
how much battery charge level should be left off in battery when not using laptop battery for 1 or 2 weeks or i mean instead of using battery i use external power. will this help in maintain long life of a laptop battery? i mean to say put battery into laptop when u away from power source. plz tell if using laptop without battery affect's its performance? is it the good practice? also please tell is it good to perform full recharge cycle in cell phone batteries with 1500 mah capacities or lower??? how often should we charge cell phone batteries for their long life and performance?
On February 11, 2011, Boris wrote:
nitin, there are a few circumstances: If the AC incoming power are stable where you work at with the laptop, you can discharge your battery to 30~40% power left by using the power of the batt., then put the batt. away your laptop to storage them; If the AC incoming power are quite not stable, or there's a scheduled power off where you work at, you'd better keep them in the laptop. That's because you may / will need them any minute.
On February 11, 2011, Boris wrote:
Craig, if you do not need to use the device immediately, it would be very kind of you to let it cool down before charging. While charging any kond of batteries, it will warm up or heat up, so you guys need to do something to cool them down.
On February 8, 2011, Craig wrote:
Is it OK to recharge a Li-ion battery immediately after use? While it's still warm? I remember that was the case with NiCd batteries when racing RC cars.
On January 24, 2011, Riezknoe wrote:
oow.....thanx...
On January 21, 2011, Boris wrote:
Sometimes battery-powered devices use battery power I mean devices that always powered by battery power when charging.
On January 21, 2011, Boris wrote:
Sometimes battery-powered devices use battery power even they are charging, so they "drain" batteries when charging. Some don't, they use external power source such as power from the charger, then these kinda devices don't "drain" batteries when charging.
On January 21, 2011, Riezknoe wrote:
Thanks....btw does using the battery while charging 'drain' the battery???? eg.talking on mobile phone while charging....
On January 20, 2011, nitin wrote:
should we use laptops with only charged battery power or run laptops with direct powers along with batteries to ensure more life for batteries.
On January 14, 2011, Cadex Electronics Inc. wrote:
@Michal - LiPo charging rules follow the Li-ion column.
On January 14, 2011, Michał Surowiecki wrote:
Thanks, these are helpful information:) But what about Li-Polymer batteries, how to charge them?
On January 6, 2011, Boris wrote:
That's "80% depth-of-discharge", DIScharge, not charge. Thank you,
On January 4, 2011, Enrique wrote:
What does 80% depth of charge mean? Should I charge until 80% then use, or should I charge to 100% and then use until 80% then recharge?
On December 19, 2010, moza ahmed wrote:
me 2 .. i still remove the battery while laptop is running . & i think that is good way ,, isn't it ?
On December 4, 2010, Jeff wrote:
It is generally safer to remove and replace the battery when the computer is turned off, but as long as the computer is plugged in there should be no major problems.
On November 10, 2010, Erick wrote:
I still have a doubt here, It's safety or not to the battery if I remove it from the laptop while it's running? Or I need to turn off the laptop in order to remove the battery? Thanks!
I have changed hundreds of battery systems out in the oil and gas industry as well as other industrial facilities mostly solar and wind charging and have studied the effects. The systems usually last 3 to 4 years if you have good photovoltaic cells and positioning is optimal. I have found any type of resistance load or inductive load is not good and cuts life by at least 80% in a high demand situation thus for leaving the user with the reality of a bad choice. And the extreme cold was much worse when the seasons changed. Hence welcome to Wyoming. Yea fact I whitenesses it and did not enjoy changing out 110 amp batteries every day. The sun savers and solar panels were not the problem. Batteries are ok for data acquisition that was all, and small power outputs on and off. Lead could at least be recycled lithium ion needs help in that region. And I found when I went ice fishing lithium ion lasted about 20+ or - % longer. Yes EL FACTO. So it’s not near as peachy as green advocates push. And by the way this is coming from a licensed master electrician and also teach theory so there is no argument.