T-Mobile may ship free battery upgrade

A T-Mobile rep hinted that the company will be shipping ta 2400 mAH battery and a new cover to every G1 owner in January.  GearDiary spotted an extended battery for the G1 that Boxwave is selling for $59.95, shown above.  With the extended battery, the G1 turns into something

that looks to be as thick as a Canon Powershot SD1100.

Matthew Miller over at ZDNet says that in order to extend the G1’s battery life, users need to turn everything off. “…turning off the 3G, WiFi, Bluetooth, GPS, and auto-syncing will conserve your battery.” states Miller.