Email polling / extending battery life

[MonkeyWorld]

I'm looking for any utilities that would help extend the battery life of my Polaris - obviously aware that use of Wifi, 3G, etc. hits battery life.

I've got my device set to bring down emails every hour (useful during office hours), but I don't want this happening all through the night - and don't want to have to turn phone off completely. Anyone know of a util
/way to control the messaging/email polling schedule ?

[Yzord]

What really helps is closing the data connection after email check or surfing. This is what costs battery. I've managed with a registry edit that the connection will be closed after 2 minutes of idle. This does a lot for my battery life. First i had 1 till 2 days with a battery, now it runs for 4 days or so.

[MonkeyWorld]

Cheers, yep via the KaiserTweak util I've already got it dropping the data connection after 2 mins, but I'm still looking for other ways of improving battery life a bit further.

[bluebee]

Cheers, yep via the KaiserTweak util I've already got it dropping the data connection after 2 mins, but I'm still looking for other ways of improving battery life a bit further.

I have a quite opposite problem in TC. I don't want data connection to get disconnected after some idle time. I am not that much concerned abt battery life. Is there any registry edit that needs to be done so that, data connection never gets disconnected untill i want to disconnect it.

[allanmb]

Does being connected to 3G eat up that much battery even if the connection is idle?