Product Description:.Item: Li-on Battery for AHDBT501.Battery Capacity : 1220 mAh.Battery Type : Li-ion.Battery Voltage : 3.85 V.Charging Voltage : DC 4.2 V 1A Max3-slot USB Charger.Model: AHDBT-501.To Fit: GoPro Hero 5.Input:DC 3A Max.Output Voltage: DC 4.2V 0.8A*3.Cable Length: 50cmMore Features:.High efficiency of power conversion..No memory effect..Safe and reliable, perfect for using on travelling and outdoor activities..Safety circuit design , Over charge protection, over-discharge protection, shortage protection.Compatible With:AHDBT-501For GoPro HD Hero5, For Gopro HERO 5Package includes:2x Hero 5 batteries1x 3-slot charger1x cable