I got tired of waiting for the "T-Mobile is going to send users extended batteries" and bought Seidio's 2600. The instructions said charge for 8 hours before using, but by 4 hours it was fully charged. I began using it, including running GPS (which I never had on before because of battery drain) and playing Spades (which just eats up the regular battery). 24 hours later, the indicator still shows it fully charged. This is more like it!