This app is for Skanbatt Bluetooth LiFePO4 batteries with Bluetooth 4.0 BLE technology. - Provides easy to read system information on Norwegian from your lithium battery - Event Viewer, messages, and graphic representation of the battery status - The phone requires bluetooth4.0 with BLE (Bluetooth low energy) function - Android 4.3 or later - Measuring Distance <= 5m - Because of bluetooth hardware may APP only be connected to one battery at a time - If you want to connect to another phone, plea