[dba-Tech] Laptop Batteries

Gary Kjos garykjos at gmail.com
Wed Jan 6 17:14:07 CST 2010


I believe they are rated for a specific number of cycles. The more
often you discharge and recharge the quicker they wear out.

They usually offer upgraded batteries with more cells in them that
would last longer since they wouldn't normally be as fully discharged.
And many systems offer you a second battery so you could rotate them
somehow although I don't know how you would recharge the "other one"
while one was in the machine.

Any battery powered device will eventually wear out the battery.

I don't run my laptops on battery much, I generally have them tethered
to their power cord 90% of the time, so I really have no idea of how
long of life they had "before" or now for that matter. I think they
only were good for about an hour or two when they were new.

Much also depends on what kind of work you are doing. How many times
it has to spin the hard drive etc. Or how computationally intensive
the processes you are doing are. Laptops generally have power
management set so that the chip runs SLOWER when it can to save power.
I know my laptops were all set to run in a lower screen brightness
under battery verses plugged in which was one reason I usually plugged
it in.

Buy another battery and keep the other one as a second.

GK

On Wed, Jan 6, 2010 at 4:28 PM, Rocky Smolin <rockysmolin at bchacc.com> wrote:
> Max's Dell laptop is 18 months old.  The battery life has declined to about
> 1 hour.  He does have the three year on-site warranty but Dell is telling
> him that the battery isn't covered after one year.  Seems rather mean to me
> but anyway - how much life can one expect from a laptop battery?  This one
> is used a LOT.
>
>
>
> TIA
>
>
>
> Rocky
>
>
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>



-- 
Gary Kjos
garykjos at gmail.com




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