Professional Battery Tester Battery Activation Charge Board, Phone Battery Repair Circuit Board with Power Current Cable Compatible for iPhone X 8 7 Plus 6 Plus 6S, iPad, Samsung, Oppo etc. Features: 1.This Battery tester doesnâ??t contain battery, it is only used for testing, charging, and re-activate iPhone iPad Android batteries. 2.This is the professional testing and re-active battery tester, not for one-time used, we suggest that DIY enthusiasts can resell it out. Description: The battery test charge / activation board brings old or dead iPhone batteries back to life, it is a valuable phone repair tool for battery. Advanced design allows you to charge a maximum of two batteries at any one time. 2A Current Protection/cut off, if the current of voltage are too high the protection automatically disconnects the power supply. Short circuit protection: If the battery has a short-circuit, the warning lamp will illuminate - Do not to charge the battery! Visual display - A dual LCD display showing current & voltage. Safe and easy to use - Attach battery and power to use, when the battery is full it will stop the output charge current to prevent overcharging. Low voltage activation: os battery voltage is below 3V, the battery can be re-activated using the activation button. More Info & Note: Keep the input voltage below 5V. It's better to charge one battery at a time for a faster charge. The left LCD display shows the current. The right LCD display shows the voltage. Include: 1 x 9208 Battery activation board 1 x Micro USB cable 1 x Power cable 1 x Welcome guide