Features 1、Wide Compatibility: This board supports both for IOS and for Android system equipments. Rest assured to choose it! 2、Voltage, Current Display: This board features voltage and current dual display, you can monitor voltage and current changes at any time, more convenient and intuitive. 3、Automatic Identification: This board can intelligent automatic identification of positive and negative poles, easy and time saving. 4、Safe Use: The board has functions like automatic power off, charging status prompt, high current load protection. You can use the board safely and confidently! 5、Easy Carrying: Comes with small size and lightweight, you can easily take this board with you to help with your work. Specification Item Type: Battery Activation Board Material: PCB Package List 1 x Battery Activation Board 2 x Connecting Cable