New Laptop Battery - Charge Battery for 10 Hours First Before Using?

I recently bought a new battery for an old dell laptop from ebay. I was going to put the new battery in and take the old one out... old one doesn't hold a charge for more than 1 minute... i read it says


Charge battery for 10 hours to your notebook computer before using



I'm a bit confused at this. Does this mean what it actually means? Because i have never heard of anything like this. I figure with the new battery, once you put it in and charging it... you would be able to use it but this note basically says don't use your computer for 10 hours?


Does that make any sense? First off, even if the battery has no charge and it takes say 2 hours to charge it... isn't charging 8 more hours horrible? I know its never a good idea to leave a battery charged 100 percent and continue charging it. So why does this battery have this message?


I was going to just put the battery in and have it charging then use it. Then after few hours just shut down the laptop and obviously take the charger off.
Edit/Delete Message

 

First charge is 8 to 16 hours maximum on most battery powered electronics for the battery to reach a full charge.

When it says to not use it, it means on battery power. When you are using it though on that initial charge, stretch the time closer to 12 to 16 hours.


And yeah, I've heard of this before.

 

I never heard of this ever. When i get a new battery for laptop or buy new laptop, i would obviously be charging it first. But once its 100 percent the battery, i would unplug it. So thats wrong then?


That just doesnt make sense b/c if its 100 percent the battery why keep charging it for 6 plus more hours at least?


So that mean with a new laptop or battery if i just recharge it say 1 or 2 hour to get it to 100 percent, then unplug it then either continue using it or just shut down the computer, that means more likely the battery isn't going to be as good as charging it that many hours the first time?


Again this is something i never heard of ever for a new laptop or new battery for a laptop...

 

In the old NiCAD days this was true. With modern Li-ion stuff the battery is typically fully charged in about 3. However, some chargers are slower so 4-5 might be needed. Also the first charge is important for getting the fuel gauging controller setup (it can get confused and give bad readings otherwise). Finally, what you are seeing is over caution on the part of the warning label. 10 hours is almost certainly overkill for ANY real world application but it can't hurt so the manufacture figures why not? I wouldn't worry about going 10 hours but I would give it perhaps at least an hour after it claims full (depending on the system it might be putting a bit more charge current into the battery even after the gauge claims full).

PS: My experience with aftermarket batteries for my Dell M4400 (~2008 Latitude) is none are any good. I took to buying used OEM batteries because I had better luck.

 

simples.
wait for a day you will be gaming at your desk on mains.
connect battery and play on mains all day.
done and dusted, theres your 10 hours of charge.

 

You are overlooking the fact that most (all?) modern computers are clever enough to know when the battery is fully charged and then stop charging it. Then it doesn't matter how many hours / days / weeks the computer is left plugged in.

Lithium battery longevity is measured in charge cycles and each time you discharge / recharge the battery you are adding to the charge cycle count.

John

 

The cycle life of the battery is more complex than that. If for example you can get 300 full charge discharge cycles (0% to 100% and back to 0%), doing a 50% cycle (30% to 80% to 30%) would result in more than 600 cycles. The wear to the battery is greatest at the ends of the cycle (ie near full or near 0).