My Mugen 1800mAh battery is still running fine fellas. I have several email accounts and am a bit of a power user, so I charge daily, but it will usually go something like 30+ hours before it's drained. I know the original battery could do any better and was probably a fair bit worse, so I'm still satisfied with it. If anyone still on the fence about this battery, I don't think you have anything to worry about.