Professional mechanics trust Schumacher Electric's DSR ProSeries line of heavy-duty, professional-grade battery chargers. The Schumacher DSR ProSeries 10-Amp 12-Volt Rapid Battery Charger with Service Mode (DSR117) is designed and engineered to quickly charge your 12-volt standard, AGM, and gel batteries. With 10-amp charging, the DSR117 will quickly get a connected battery up to a full charge. Plus, the DSR117's service mode will maintain a stable voltage of 13.6 volts when connected, preventing discharge of batteries during service or if idle on the showroom floor. Fully automatic and microprocessor controlled, the DSR117 employs multi-stage charging, bad battery detection, and reverse hook-up protection. Other features include a hook attachment, color-coded battery clamps, 88-inch booster cables, LED indicators, and a Start/Stop interface.