I had the "new" battery appointed in March 2013 and 3 times fully charged and discharged to obtain full charge. The opposite was the case! The maximum loading capacity decreased noticeably. After a total of 8 charge / discharge cycles of the "ORIGINAL POWER battery" could only be charged with a maximum of 64 percent of the rated capacity (3265 mAh of 5100) - and leveled off in this area. The battery data I have read and monitored with the original HP software "HP Battery Check". This battery I have returned after 3 months and another "new" condition. "HP Battery Check" showed me for the second battery at the same serial number "65534 02/16/2011", as for the first battery. However, the rated load capacity is 5200 mAh even to take 5100 mAh, as the first identical battery. Again the same game. The nominal load capacity can not be achieved, and decreases with each additional charging up to a certain level. As proof, I have uploaded two screenshots here. At the end I have the second battery also sent back and let me refund the purchase amount. ATTENTION! The postage is not refunded me because over 30 days had passed ...
Conclusion - this "ORIGINAL BATTERY POWER" in my opinion is not recommended !!! - Real "ORIGINAL" ... ???
PS: I took advantage of the seller "Fair-electronics" - the entire settlement and restitution was extremely professional, knowledgeable and friendly. Big thanks for that!