Suitable for the BMW and European motorcycles, like Hella, Din, for BMW power socket.<br> Input voltage: 12-24V <br> Output voltage: 5V <br> Max output current: 3.3A With 2 USB ports. <br> With waterproof cap, which will make the USB port weatherproof when not using. The waterproof cap is connected to the USB case.<br><br> Note: When this charger is connected directly to the battery it will draw a very small amount of power (milliAmps). <br>Over time it may drain the battery. <br>We recommend to unplug it when not used, or connect it to a switched power source.