Features 1、PROTECTIVE EFFECT: This battery charging board is well made, stable and efficient, with excellent protection for the battery. 2、WIDELY COMPATIBLE: The small size of the battery charging board is widely compatible with nickel metal hydride nickel cadmium batteries and is very practical. 3、COMMON REPLACEMENT: This battery charge board can be easily installed, making it an ideal replacement for the old and damaged parts. 4、PCB MATERIAL: The charging module is made of PCB board, which is a strong, durable and wear resistant power supply board for long term use. 5、EASY INSTALLATION: Comes with a compact size and a light weight as well, the easy installation can be quickly completed. Specification Item Type: Battery Charge Board Material: PCB Color: Black Input Voltage: DC 4.5V-5.5V (DC 5V is recommended) Charging Voltage: About 6.75V-8.5V Charging Current: About 230mA-240mA Package List 10 x Battery Charge Board