Original Battery Li-Ion high performance Samsung EB-F1A2GBU Samsung Galaxy S2 S2 S2 S-R-2-S II SII i9103 Samsung i-9103 EB-A2-F1-GBU EBF1A2GBU 1650 mAh 3.7 V (Accessory)
Initially the battery charge held rather well, but soon the capacity is deteriorated, eventually take less time than my old battery. She sometimes goes from 15 percent to zero percent at once. Sentence load and heating time to time, short product has nothing to do with the original battery. Useful in backup battery.