Review on ⚡ ULTRAPOWER 5-Amp Smart Battery Charger: Efficient, Fully Automatic for Car/Truck/Marine/Boat/Wheelchair Batteries with 24V Charging, Battery Maintainer, I/O Switch, and Alligator Connector by Dave Lopez

This charged two (expensive) batteries in a scooter I was planning to sell and at first I was happy. However, after leaving it plugged in according to the charging instructions, both batteries lost all power and their cases bulged outward. Apparently the batteries were fed with a full charge and not a weak charge. The batteries are dead now and I can't sell the scooter without buying two new $200 batteries. total disaster. I think it could have been worse. They could explode and burn down my house or spill toxic, caustic chemicals into my garage.