Battery not detected by my Macbook Pro 13 "mid-2010 (no load, nothing, black cross on the battery). Nothing will work, I tried reinstalling the OSx, SMC reset, PRAM, moultes and tricks found across the net etc .... Do not even exist in the eyes of the machine that she always accepts its original battery. Too bad she looked good! So I can not recommend it if you have a config similar to mine.