Features 1、Light Indicator: When the battery is fully charged, the circuit will automatically cut off the power and the red light will change to blue light. Prevent overcharging. 2、Intelligent Identification: The battery activation board can automatically identify the positive and negative poles of the battery to help the battery charge quickly. 3、LED Display: The battery activation board has real time display of voltage and current. When the battery is plugged in, the voltage of the battery is displayed. When the power supply is plugged in, the voltage of the power supply terminal is displayed, and the current is the load current. 4、Overload Protection: When the current is overloaded, the battery activation board will automatically cut off the power supply, and it will resume normal operation after a few minutes after disconnection. 5、Sponge Cushion: The bottom appearance of the board has a thick sponge pad, which can effectively reduce damage to the board. 6、Inspection Method: In the process of repairing the mobile phone, the power supply can be supplied through the USB connection, and the voltage value and current value of the charger can be accurately detected, so as to judge whether the performance of the charger and the charging cable meets the requirements, and the USB interface, U disk, etc. can be measured. Power supply or power consumption, you can measure the voltage when the USB power supply device is empty or loaded, and the load current when the USB terminal device is working. Specification Item Type: Battery Activation Board Material: PCB, Sponge Applicable Mode: for IOS, for Samsung, for Xiaomi, for Huawei, for OPPO, for VIVO, for Redmi, for Lenovo, for Meizu, for HTC Voltage: 5V etc. Colour: Black LED Digital Display: Support Voltage Display: Support Current Display: Support Package List 1 x Battery Activation Board 2 x Wire