On Sat, Jun 21, 2003 at 07:50:23PM +0000, Gerald Timothy Quimpo wrote:
> What's a good way to zero a laptop battery? Long ago, when batteries
> were still Ni-Cd i destroyed a hard drive by just keeping the computer
> on battery power until it would go off by itself because there was
> just no more power.
>
> I haven't had to do that lately because it's not supposed to be
> necessary to zero Lithium Ion batteries. Or, it's a good idea to do
> it sometimes but not really necessary since Lithium ion doesn't have a
> memory effect.
>
> But i think i'd like to zero my battery maybe once a month. What
> would be a good way to do this?
>From recent experience with a Li-ion battery, it seems what you want to
make sure you don't do is use your battery up with too many charges. It
seems like Li-ion battery life is measured by the number of recharges
its gone through. With this in mind, what my father normally does with
his new PowerBook is:
- when possible, he does not use the battery (eg: when he's
connected to a UPS-powered outlet in the office), he removes the
battery and works purely from the power outlet.
- when he uses the battery, he does not charge it at the same time.
- when he uses the battery, he drains it until the PowerBook
automatically sleeps with the last reserve power in it, then he
charges it fully.
This is what i do with my cellphone, too, except I always use the
battery, and always use it until the thing dies.
Probably not the technical answer you were looking for, but anyway...
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