Summary of Do’s and Don’ts

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!

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.

me 2 .. i still remove the battery while laptop is running .

& i think that is good way ,, isn’t it ?

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?

That’s “80% depth-of-discharge”, DIScharge, not charge. Thank you,

Thanks, these are helpful information:) But what about Li-Polymer batteries, how to charge them?

@Michal - LiPo charging rules follow the Li-ion column.

should we use laptops with only charged battery power or run laptops with direct powers along with batteries to ensure more life for batteries.

Thanks….btw does using the battery while charging ‘drain’ the battery????
eg.talking on mobile phone while charging….

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.

oow…..thanx…

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.

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.

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.

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?

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.

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?

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.

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??

“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?

i like that web ,it has been answered my question thanks a lot

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!

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.

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.)

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.

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.

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.

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.

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.

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?

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

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

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 ?

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?

is it possible to charge a battery using micro wave?

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 ?

Why mobile battery is of rating 3.7 v?

is it uk if you used your netbook full without unplugging then used it? ahm,. i unplugged it after using.

di kaya maless ang capacity of that?? while using it then it is fully chareg??