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PACKAGE INCLUDES: You will receive a 3-pin plug 7.4V USB charging cable that connects directly to the compatible battery, requiring no additional adapters WORKING EFFICIENTLY: Input: DC 5V 0.5-2A Output: 7.4V 1000mA stable specification Automatically adapts to various USB input power sources Fast charging without damaging the battery INDICATOR LIGHT: The red light on the lithium polymer battery charger indicates charging in progress, while the green light signifies a full charge. It displays the charging status in real time to prevent overcharging IC PROTECTION: LiPo battery USB charger incorporates an integrated circuit protection chip, providing triple fundamental safeguards against overvoltage, overload, and short circuits WIDELY APPLICATION: Widely compatible with RC cars, trucks, speedboats, drones, quadcopters and other devices powered by 7.4V lithium batteries, provided they feature an SM-3P interface