Plug and play. Charging cable compatible with 3.6V-3.7V Ni-Cd/Ni-MH LiPo batteries with SM-2P connector. Input: 5V DC, Output current: 3.6V-3.7V, 500mA USB ports compatible with any USB charging adapter. Built-in IC protection unit against overload and short circuit. Green and red LEDs indicate whether the cable is charging or fully charged. The output has a 2-pin SM-2P connector. Mount it carefully to charge your LiPo batteries quickly and safely. Provides overcharge and overvoltage protection. The red indicator shows the charging status. Automatically adjusts to the USB input and charges the battery quickly and stably.