Battery Life on Kaiser

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Ok, i've only had it for 2 weeks, but on a full charge, by the evening i'm down to 30-40% and by the morning its switched off and dead !!!

So i'd say, i'm getting around 15hrs, not many in or outgoing calls today, but GPRS is always on.

Via my Wizard, i could do the same, lots of calls, downloading, mp3 player and battery life was far better.

Is my battery faulty or is this normal ?

I use gprs always on, moderate calls, browse internet more than average and I have like 20-30% left at night. Not very good battery life on kaiser.

For me the biggest drain is the setting on Push for Microsoft exchange. When I turn it off, the battery lasts twice as long.

Over here the battery is also drained by email.

I have GPRS and bluetooth always on, and have plenty of battery left every day.
I have also 3 emailaccounts who check for new mail every 5minutes. So far so good.
They're IMAP accounts and when I let it check for emails from the last 3 days there's now problem, but when I let it check for emails of the last 5 days or more, the battery doesn't even last a full day.

Windows Live

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I can only ascertain its Windows Live (email checks every 15mins) doing something thats draining the battery BIG time, in 5hrs it lost 30% of its charge, without it its doing much better