or do what i did, buy a spare battery and charger from the bay! cost around £16. i backed up my phone to my memory card constantly for months until one day it went into a loop and wouldnt boot. I managed to get a n900 form a friend that had seen better days on the outside but the inside was perfect so i swaped out the two mother boards, resined the usb on the good one and fitted it to my covers... perfect. and even sold the now brokn phone on the bay...! back to the now working one... add the mem card and restore.. phone back to the way i wanted it.

Loz