The rugged Battery Tender 12V, 800mA weather resistant battery charger and maintainer has all the features of best selling Battery Tender Junior, in a mountable water resistant package. This 800 milli battery charger is also shock and vibration resistant, perfect for all types of ATVs, personal watercraft, motorcycles, boats, or other recreational vehicles that may be exposed to the elements. Smaller than a computer mouse, but tough enough to keep your ride ready for its next adventure. The Battery Tender 12V, 800mA weather resistant battery charger is designed for all lead-acid and flooded or sealed maintenance free batteries AGM and gel cell.