MP7431 4A Smart Bluetooth Charger Fully automatic 6V/12V 4A Smart Charger with Bluetooth functionality Suitable for a wide range of vehicles up to 2.5L Suitable for lead acid, AGM, GEL & Lithium Ion batteries Convenient and easy to understand information via the Free Check & Charge App Syncs automatically via Bluetooth to a mobile device. IOS 8.0 or later, Android 4.4 or later and a mobile device with Bluetooth BLE Ver 4.3 is required. Bluetooth range approx. 25m 8 Stage charging cycle Seasonal (Winter mode) battery maintenance LCD display shows charging information Overload, reverse polarity & short circuit protection 1.9m output leads with interchangeable crocodile clips & ring terminals MP7431 4A Smart Bluetooth Charger can be connected to MP7432 Smart Bluetooth Battery Tester Check & Charge App Search ‘BT Charger 2.0’ in the Apple App Store or Google Play to download the app. On the ‘Check & Charge App’ you will see: % of the battery charged Battery voltage Rate of charge Stage