• Fully automatic 12V 3-stage battery charger, designed for charging and maintaining a variety of EFB and AGM (stop/start), GEL, lead acid and calcium batteries with auto-shut-off maintenance function.• Zero volt battery charging, enabling recovery and charging of a completely discharged battery (providing any load removed from the rechargeable battery).• Old battery sulfation repair function.• Reverse polarity, short circuit, over temperature, over voltage and overcharging protection.• Easy-to-read LED indicators display power status and charging stages.• 2 Year guarantee*.Fully automatic 12V 3-stage battery charger, designed for charging and maintaining a variety of EFB and AGM (stop/start), GEL, lead acid and calcium batteries with auto-shut-off maintenance function. Zero volt battery charging, enabling recovery and charging of a completely discharged battery (providing any load removed from the rechargeable battery). Old battery sulfation repair function. Reverse polarity, short ci