This App is only for POLINOVEL HT series Bluetooth battery which based on bluetooth 4.0 BLE technology. 1. The Best Utility tool for monitoring your lithium battery. 2. Event recorder and notification reminder, easy to manage the battery. 3. Measuring distance: <= 5m. 4. Due to the bluetooth hardware feature, the APP only can connect with one battery every time. 5. If you want to connect this battery with another mobile phone, pls exit this program.