Way to measure the battery life between charges?

[n0m0n]

Does anyone know of a app that can measure the battery usage vs the time it takes to require a charge?
I feel that this T3's battery runs down awfully quick.
MUCH quicker then my Nx.
So quick that I think there is a problem with the units battery.
I would like to be able to measure the time it takes to go work its way down to 15%, or so.
Any one know of a app???
Thanks

[JwY]

did u try batterygraph?

http://www.freewarepalm.com/utilities/batterygraph.shtml

it shows the time u had your palm on and recharge times and logs info

[n0m0n]

So it will show the time /date of a charge and then how long a given % of the battery lasts in time?
Thanks