It isn't cheap, but this 2400 mAh super-extended battery has me using the G1 as it was designed to be used; and relegating the stock battery to the role it's best suited for - emergency back-up. There are a lot of extended batteries on the market for the G1. I can't compare and contrast them because I've only tested one. But the one I did test is a godsend. Please let me keep it, WirelessGround!