On-Board feature allows mounting of charger next to battery on collectibles, street rods and other infrequently used vehicles. Hardware and mounting brackets included. 1.5-amp trickle charge rate, charges in 2 to 12 hours. LED lights indicate power on andcharged. Reverse-polarity protection. Molded plastic case. Short leads for safety. Will not get tangled in moving engine parts. 5-1/2 x 3-1/2 x 1-1/2. On a card.