Specification: Compatible: For Battery packs 7.4V Lipo Battery Input: DC 5V Output: 7.4V (1000mA) Includes: SM-4 PIN PLUG Weight: 14g Cable length: 55cm Operation Instruction: 1. Connect battery pack to output connector and plug DC power source 2. Make sure battery polarity is connected correctly 3. When charging, the green light is flashing and the red light is on. 4. When the battery is fully charged, the green light stays on and the red light turns off. 5. If the red light is always on, it means that the charger is not charging your battery. Note: The charger is designed for 7.4V Lipo Battery. Do not charge other types of batteries. SM-2P Connector Plug 7.4V Lipo Battery Charger SM-3P Connector Plug 7.4V Lipo Battery Charger XH-3P Connector Plug 7.4V Lipo Battery Charger Add To Basket Add To Basket Add To Basket Customer Reviews 4.