This smart electric bike battery charger device is a must-have for any bike enthusiast. It is compatible with universal bike types and has a voltage of 36V with a battery capacity of 12Ah. Its black color adds a stylish touch to your bike and its brand, Active, ensures its quality. The 42.0V 2A smart electric bike battery charger device is a necessary component for any cyclist. Its part type is a battery and it is suitable for use in electric bicycle components and bicycle components & parts. Get your hands on this essential item that will keep your bike running smoothly and efficiently.