how long can a spare battery last?

Archived from groups: microsoft.public.pocketpc (More info?)

I hhave a new ASus a730w battery life I notice is not that great but
there is a spare battery. The spare cannot be charged except in the
unit. Can anyone tell me (best guess I know it's different for each
device) how long a spare battery can be carried around and still
expect to be holding a charge when needed.

Example: carry my PDA for a wee along with a spare battery, most of
the weekI can simply recharge the unit when needed. However at the end
of the eek I'm in a conference and run the unit non-stop all morning
so the battery dies. Can I still expect the spare I've been carrying
all week to have a reasonably full charge?

Thanks for any info

Archived from groups: microsoft.public.pocketpc (More info?)

On Sun, 16 Jan 2005 05:17:07 GMT, "René" <kar98@the-coalition.us>
wrote:

>Jane Austin wrote:
>> Can I still expect the spare I've been carrying
>> all week to have a reasonably full charge?
>
>Rechargeable batteries lose about 1% of their charge every day, when not
>in use, so in theory, you should be good to go.
>
Thank you for the info

Archived from groups: microsoft.public.pocketpc (More info?)

"Jane Austin" <janeaustin376@hotmail.com> wrote in message
news:31tju0thvs0e2if5checu0tgpsvm69feqs@4ax.com...
| I hhave a new ASus a730w battery life I notice is not that great but
| there is a spare battery. The spare cannot be charged except in the
| unit. Can anyone tell me (best guess I know it's different for each
| device) how long a spare battery can be carried around and still
| expect to be holding a charge when needed.
|
| Example: carry my PDA for a wee along with a spare battery, most of
| the weekI can simply recharge the unit when needed. However at the
end
| of the eek I'm in a conference and run the unit non-stop all morning
| so the battery dies. Can I still expect the spare I've been carrying
| all week to have a reasonably full charge?
|
| Thanks for any info


Different battery technologies have different self discharge rates.

NiMH and NiCd batteries can lose anywhere from 1-5% of their charge per
day, (depending on the storage temperature) even if they are not
installed in a device. Lithium-ion batteries will retain most of their
charge even after months of storage.