HOBBYTIGER 2S 3S LiPo Life Battery Balance Charger with Power Supply for RC Hobby Airsoft Smart Lipo Charger.MCU intelligent control build in Lipo repair function and will start trickle charging mode in the voltage range of 1.5-3v per cell. Wide Application:2 types of charge ports for all 2-cell (7.4v), 3-cell (11.1v) Li-polymer batteries pack. 3 charging current (selected by switch): 0.5A, 1.2A, 2A. DO NOT charge 2s and 3s batteries at the same time.Charge 1 battery each time. Balance Mode: balanced charging of each battery cell during the charging process so that the battery will have a better performance and a longer cycle life. Good Heat Dissipation performance. Made of aluminum alloy to avoid the problem of deformation which usually occurs to other cheap plastic chargers. Protection Measures: input under-voltage or over-voltage protection, input polarity protection, output short-circuit protection, output over-voltage protection, output reverse protection. How to Use: 1. Connect charger and power supply, all LED lights in turn, charging current indicated as 1.2A. 2. Use the right button to choose the charging current. 3. Use the left button to choose battery type. Battery mode must be selected before connected battery and charger. 4. Charge one battery one time. NEVER charge 2s and 3s battery together at the same time. Green LED light blinking means charging. 5. Led lights turn to a solid status means fully charged.