Features include: completely waterproof, temperature compensation, reverse polarity protection and full shut-off. Lower charge rate (6 amps per bank) requires only a few extra hours to charge vs our 10 amp Pro Series Chargers. One Bank Pro XL: 6 amps per bank.Wt. 5 lbs. 5” x 8” x 6-1/2”Two Bank Pro XL: 6 amps per bank. Wt 9 lbs. 12V/24V. 5” x 8” x 9 1/2”