Fully automatic 12V 3-stage battery charger, designed for charging a variety of GEL, AGM, 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. Sealey Battery Charger The Sealey SBC8 is a Battery Charger 12V 8A Fully Automatic. Ideal for DIY users and Trade Professionals alike. Fully automatic 12V 3-stage battery charger, designed for charging a variety of GEL, AGM, 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 displays power status and