TecMate TM-421 OptiMate 2 Battery Charger

With 0.8A constant current OptiMate 2 automatically brings the battery to full charge and then switches to the unique OptiMate battery-saving maintenance charge mode to keep the battery at 100% ready, and at the same time provides power to the on-board computer, display or antitheft alarmWeighs in at 1 lb.Weatherproof and very easy to use: simply connect to the battery and plug it into the nearest power socket; the rest is fully automaticThe OptiMate 2 smart charger-maintainer is a cost-effective solution for long-term maintenance of 12V batteries in any vehicle that is stored indoors or outdoorsRecommended for STD (with removable filler caps), sealed AGM (absorbed glass mat) and sealed gel 12V lead-acid batteries up to 50AhIncludes permanent ringlet connector with weatherproof cap and a set of battery clipsFully automatic operation that includes all safety features such as reverse polarity protection, no spark connection; approved to UL and CSA safety standards for automatic battery chargers