I received mine Thursday, Charged it Thursday night and used it yesterday. I was not impressed with the battery life (very low by 11pm) which is what I get out of the oem battery. I will report back after a few more days of use (charging all night, using all day).
Either way, $10 spare battery!
My battery wasn't operating very well either until after about the 4th cycle through (charging it 100% then letting it die). What people need to realize, is even though your battery might look full, it takes a long time to actually charge to 100%. I'm willing to bet most aren't cycling their battery correctly to begin with. I get about 20% better battery life now.
) But towards the end of my 8 hour day i was down to 39% which is around the same as my stock battery and it didnt really start to drop fast until around 19%. So i charged it when it got down to 6% and this morning i was ready to go. I got to work about hour after taking it off the charger and im down to 94%! worse than yesterday. What is weired though is it seems to drop down some like form 100 to 94 but then stays steady at 94 for a long time before it falls again. Like i said these seem to be the norm for this battery and im hoping that after a few more charge cycles it will be ready to go. Today when i charge it will be my 3rd cycle so im hoping it gets better.

