Anybody try formating sd card trick? Results?

[kkryter]

Interesting! I'm going to have to read some more on this and will look forward to others experiences with it as well. I don't have a huge battery problem but more is always better! This reminds me of something I've been meaning to ask, if anybody knows the answer, enlightenment would be appreciated. I've got a class 4, 8 GB card from my old TP, would doing this trick result in any noticeable speed increases over the class 2 that was included with the EVO in addition to the possible battery life win? If so is there any worry about loosing anything that might be on my current EVO card, will I need to copy it's contents over to my fresh one? I haven't explicitly saved anything there to my knowledge.