i know there's threads and i've searched but i'm just curious.
i just got a new bb8700r on monday. I let it die 3 times (first time 5%, second 5% and third 10%). Now, i hardly am using it, maybe 5 minutes for the internet, MAYBE 30 minutes for a convo and like 15 texts. It was fully charged as of 10:30 AM this morning. It charged for over 11 hours. Now it's @ 25%? Is that normal?? it's 12.5 hours later....
Keep in mind, the leather case I have is too big so it doesn't 'shut off' necessarily with that battery charging thing, that case is en route from blackberry.com, but i constantly make sure it's off whenever i put it back into the case to not waste the backlight.
thanks!

The backlight will suck the battery dry! If your case is keeping your screen lit constantly that will definitely happen! I use BBLight to keep me screen permalit and i have to charge my battery pretty frequently, which is ok with me. If the screen is powering down and youre still experiencing battery life shortage u need to replace the battery, it should be covered by warranty.

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I don't know about Rogers but Cingular will not replace Batteries on warranty. Maybe if it's under the 30 day limit, but not after 30 days. I know, I tried, neither store nor online sales, had a replacement battery for about 60 days, and online warranty support would not send a replacement battery at all. Thought I had a bad one, but finally decided it's just because I surf so much.

Hope this helps
Rcbjr.

It seems unlikely that you would have damaged the battery by running it flat 3 times, but it is theoretically possible. Li-Ion batteries do not need to be "prepared" or "primed" by running them flat - this is a leftover belief from older battery technologies. Running a Li-Ion battery flat actually weakens it. Frequent top ups are good for them, and full discharges are bad for them - there are circuits in the battery to prevent a full discharge from ever occuring. From the Battery University reference page:

Much attention is focused to avoid over-charging and over-discharging.

Extreme low voltage must also be prevented. The safety circuit is designed to cut off the current path if the battery is inadvertently discharged below 2.50V/cell. At this voltage, most circuits render the battery unserviceable and a recharge on a regular charger is not possible.

Preparing new lithium-ion for use

Unlike nickel and lead-based batteries, a new lithium-ion pack does not need cycling through charging and discharging. Priming will make little difference because the maximum capacity of lithium-ion is available right from the beginning. Neither does a full discharge improve the capacity of a faded pack.

Whoops, I'm not allowed to post the URL to the page, so the URL is...

w w w (dot) batteryuniversity (dot) com (slash) partone-12.htm

The case puts it in lit, but i turn it off immediately by pressing the 'power' button, which also is the backlight button....
i dunno, it just seems odd that it's a brand new unit and the battery like doesn't even last a full day?
thanks for the tips, i'll check out the battery pages!

I have an 8700g and since I let the battery run to the point where the BB shut itself off, I have not been able to maintain battery life more than 15 hours (and with VERY little use. Maybe checked email 4 times, made one 10 minute call). I always keep the bb in the case, so the backlight is not the issue. My bb is only three months old so I'm currently looking into RIM's 1 year warantee on batteris:
(sorry about the formatting, cannot post URL)
h t t p : / / w w w.blackberry.com/legal/warranty/battery.shtml