Efanr Black Universal Spare Battery Charger With LCD Display Indicator USB Wall Travel Cell Mobile Phone Battery Charging for Samsung Galaxy S7 S6 S5 S7 Edge Note 4 3 2 and More Universal Battery Charger with USB Output Intelligent dedicated battery charger with USB output When the battery is fully charged,automatically stop charging; Safety cut out circuit,Built-in protect circuit prevents overcharging Constant current,constant voltage charging,automatic identification The high-quality LCD screen indicates connection and full charge; Also convenient to interchange your spare batteries