50 amp bench battery charger maintains and charges any AGM, GEL, or WET automotive or marine 12V battery LCD screen displays charging status and battery status with easy to understand icons Features an alternator check which indicates if the alternator is maintaining battery level Battery reconditioning feature helps extend battery life 50 amp engine start helps start vehicles up to V8 Equipped with reverse polarity protection for safely connecting clamps to battery terminals Fully automatic high-frequency charging delivers 3 stage charging, automatically switching from fast charge, to top-off, to trickle charge New Questions? Call the EverStart customer service hotline at 1-877-571-2391