Hi guys, i have 8310 with bb bolt on, battery used to last 3-5 days, now it dies during the night while nobody is using it, is it something wrong with battery or phone settings? thank you

Moved to the 8300 section.

Is the original battery still in the device? Could be the battery, or it could be any number of other things.

Do you have it set for autoshut off at night?

See the FAQ for an article on maximizing your battery. Some good tips in there.

Have you loaded any new apps lately? Are there any data intensive apps running in the background?