I will say this though. Most batteries that are claiming to be extended, or have more mAh over the OEM battery are false. You can download a simple app from the market to tell you your battery’s mAh and my “extended 1700mAh” batteries are reading 1350mAh
When I put in the extended battery it would read the full 2750mAh, so the apps do work. My guess is these “extended batteries” are just an original OEM mAh with a new sticker slapped on.
But I’m okay with the cheap red batteries from eBay. The seller I bought from had like 30,000+ feedback and I got two batteries and a wall charge for like $15 – $20!
With Juice Defender running in night mode while I’m sleeping, I can wake up with only a 4% – 10% drop in battery life.