Ancel BM200 Car Battery Monitor Bluetooth 12V Battery Load Tester for iPhone
App :ANCEL BM200. Launch, Foxwell, Thinkcar, EUCLIA, Autek, ANCEL, Innova, Autophix, Kzyee, Fcar, Nexas. Bluetooth Version: 4.2. Applicable Battery: 12V lead-acid&lithium battery. Press the app on your phone, it should connect to the device.