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- 40 amp rolling battery charger maintains and charges any AGM, GEL, or WET automotive or marine 12V battery
- Fully automatic high frequency charging delivers 3 stages, automatically switching from fast charge, to top-off, to shut-off mode
- Battery reconditioning feature helps extend battery life; 110 amp engine start delivers 792 watts to help start your vehicle in less than 90 seconds
- Equipped with reverse polarity protection; LCD screen displays charging status and battery status with easy to understand icons
- Features an alternator check and battery voltage meter; Evaluate the battery voltage under load to indicate if the alternator is maintaining battery level