The Flex Test Board Micro-USB Type-C Battery Power Charging Dock Module for Android Type-C Phone. Easy to use, connect directly to the charging port of the phone. With this card, you can perform test work without turning on the phone. It is used for testing the mobile phone U2 IC, battery and charging port good / bad performance. The charging port can offer the best solution without cell phone parts removal neccessory, you can plug the test board to tail plug directly, it's designed for both Type-C Phone and Android models. Application: 1. U2 IC Test 2. Battery Test 3. Charging Port Test Face down the test board into the cell phone tail plug Pin definition: 1- identification / control 2- channel 1 negative 3- channel 1 positive 4- power / battery 5- identification / control 0 6- channel 0 negative 7- channel 0 positive 8- grounding Test U2 / battery: diode file, exchange red and black multimeter probe to measure value. Test charging port: diode file, exchange red and black multimeter probe to measure value. Supplementary explanation: Because the pin probe dislocation are too much, if necessary, please apply normal-working mobile phone measuring and recording, which will be convenient to compare with faulty phone and easier to judge the error. Material: PCB colour: Green Package Contents: 1 x Micro-USB interface Test Board 1 x Type-C interface Test Board