Sure you can run a battery charger with a portable generator, but why not cut out the middle man, especially if you’re off the beaten path where you don’t want to haul around a large generator? This would be especially great for charging up an electric trolling motor battery or camper battery when you’re 150 miles from the nearest outlet. Weighing in at 26 lbs, this 2.5hp generator can charge a 12V battery up to 55 amps an hour. It uses a 55cc 4-stroke Honda engine to drive a Bosch alternato