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Li-ion battery? how does it work?

700 Views 11 Replies 9 Participants Last post by  Asus Mobile
I'm sure this is answered somewhere, or somewhere before like 1000 times,
but please let this be 1001 more time and no more


So my laptop uses a Li-ion battery pack, and im guessing majority of everyone's laptop uses Li-ion? Iono,

But how do you cherish the battery life? Is it best to use it until the battery drains to 0%, then charge to 100% then unplug right when its done charging? Leaving it 100% charged and in the charger will mess up the battery life right?

Does anyone know?
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technically, your suppose to drain completely once a month, otherwise li dont hold any memory
No just use it efficiently and not opening up games or some intensive applications.

I think Li-Ion works using plates.
It is best to charge it up then let it run down completely down to 0% (won't even boot) once a month or so. This will reduce the "memory effect" it has on the battery. If you aren't going to move your laptop from the charger for an extended time just remove the battery. This prevents overcharging. Hope I helped
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Li-Ion only:
-never drain it to 0% it stress the battery alot
-draining once in a while can help with its time remaining accuracy
-recharge when its about 30%
-Keeping it constantly at 100% also stresses it

The point is, just use the damn thing. If you are gonna be using your laptop by a power source for a long time then take the battery out. Otherwise use the battery instead of power source. All battery degrades even if you dont use it so might as well take advantage of it while it lives.
I'll repost this here from the "MAC: How does it..." thread:

Quote:

Originally Posted by Acreo Aeneas
First off the advice won't apply to most Macbooks produced within the last few years, as these Macbooks use Li-Ion batteries which do not have "memory". That means there is no need to charge and discharge them every so often (unlike Ni-Cad and Ni-MH batteries).

If you happen to have a older Macbook, then they mostly likely used Ni-MH batteries (Nickel Metal-Hydride) which do have the memory effect. In which case, discharge the battery fully every 2-4 weeks or so (frequency depends on how often you go from battery to charge and back-and-forth).

As for charging cycles, every battery has a finite number of charges/discharges. Li-Ions typically have anywhere from 500 to 1000+. That translates to about 3 to 8 years worth for the average user.

Quote:

Originally Posted by "Battery University
Source: Battery University: Li-Ion Batteries

A lithium-ion battery provides 300-500 discharge/charge cycles. The battery prefers a partial rather than a full discharge. Frequent full discharges should be avoided when possible. Instead, charge the battery more often or use a larger battery. There is no concern of memory when applying unscheduled charges.
Also a short Wiki article on Li-Ion batteries.

Of course, there have been improvements to the battery's life cycles. I believe 1000 is the average upper limit nowadays.
The info applies since I was trying to explain Li-Ion batteries as they compared to older Ni-Cads and Ni-MH batteries.

I'll just throw this out here too: laptops and other electronics are already starting to make use of Lithium Polymer packs instead of Lithium Ion packs. This allows batteries to be thinner and lighter weight. They also aren't as prone to blow up as current Li-ion cells. One Source
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Quote:

Originally Posted by Skullzaflare View Post
technically, your suppose to drain completely once a month, otherwise li dont hold any memory

Quote:

Originally Posted by Drift0r View Post
It is best to charge it up then let it run down completely down to 0% (won't even boot) once a month or so. This will reduce the "memory effect" it has on the battery. If you aren't going to move your laptop from the charger for an extended time just remove the battery. This prevents overcharging. Hope I helped

Li-ion batteries have no memory and will be rendered into a paperweight if discharged to zero. Also, a laptop will not overcharge the battery.

Heat is a killer of lithium ion cells. Store them with about 60-80% charge at room temperature.
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3
Quote:

Originally Posted by justin146 View Post
Li-ion batteries have no memory and will be rendered into a paperweight if discharged to zero. Also, a laptop will not overcharge the battery.
Li-Ion batteries won't be rendered into a paperweight if drained. They will, however, be prone to burst into flames or blow up in your face if they are drained completely (or so several internet sources tell us).
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I'm pretty sure it's impossible to overcharge your battery...

~B~
Quote:

Originally Posted by Acreo Aeneas View Post
Li-Ion batteries won't be rendered into a paperweight if drained. They will, however, be prone to burst into flames or blow up in your face if they are drained completely (or so several internet sources tell us).
Lithium ion batteries have a threshold voltage that if discharged below, the cell will not take another charge. Although, your laptop will show a dead battery before you hit this voltage.
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Quote:

Originally Posted by BlankThis View Post
I'm pretty sure it's impossible to overcharge your battery...

~B~
It's possible if there isn't some regulator chip on the charging device and no real overvoltage or overload protection. When you see a battery start smoking or make a sizzling sound, get far away from it.

Quote:

Originally Posted by justin146 View Post
Lithium ion batteries have a threshold voltage that if is discharged below, the cell will not take another charge.
Okay.
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2
Li-Ion Do not suffer from memory effect or any similar.

There are circuits that prevent complete discharge and overcharge.

That means you do not need to fully discharge but you can.

Heat is the enemy as said before.

For long term storage 40% to 50% charge in a cool environment.
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