Battery Tender USB Charger by Deltran

If you already have a Battery Tender lead attached to the battery of your bike for charging it at home, this accessory allows you to use your battery power on the road without installing a separate 12-volt outlet. Designed to work with 12-volt systems, it has an output of 2.1 amps, perfect for charging phones, GPS or other small devices. $12.95. Check-out the Battery Tender website for more info.