It can be directly powered by the existing SAE outlet of your motorcycle or get power from the battery by connecting to the ring-terminal extension cablePower Backup for USB Devices - standard USB port that outputs up to 2.1Amp, compatible for charging more than 99% popular of smartphones, tablets, MP3/MP4, Bluetooth device, GPS and other USB-devices.Made of flame-retardant material and good conductive materials with 10A inline blade fuse, heat and corrosion resistant that well works at wide voltage range of DC 12-24V, great for almost all motorcyclesWeatherproof Cover Design - the full-enclosed rubber cover can be easily slapped on to ensure the USB charging port water resistant and dustproof, effectively enhance its lifespanInput Voltage: 12V-24VOutput: 5V/2.1A max.Working Temperature: -40 to 70 Ring-terminal Cable Length: Approx. 47inch /120cmRing Terminal Size: 0.24inch / 0.6cmUSB Cable Length: Approx. 9inch / 23cmZip Tie Length: Approx. 7.9inch / 20cmUSB Size: L-1.8inch / 4.5cm W-0.9inch / 2.3cm D-0.7inch / 1.8cmType: USB Charging Equipmentcolor:As shownMaterial:Plastic + MetalPackage Contents:1 x SAE to USB Cable Adapter KitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.