This Intelligent Lithium Battery Charger is suitable for Calcium, AGM/GEL, leisure, stop/start batteries and the next generation Lithium vehicle batteries The Sealey SPI3S charges batteries up to 3 times faster than conventional battery chargers without damaging the battery. Fully automatic float mode ensures that the battery is kept fully charged and ready to use, for extended periods of time. Features: Fully automatic microprocessor controlled battery charger and maintainer Patented Speed Charge technology actively monitors the charge acceptance and constantly modifies the charge output Charges the battery up to 3 times faster than conventional battery chargers without damaging the battery Heavy-duty sturdy case, no-nonsense controls, bright, clear, easy-to-read LED status lights and LED scrolling digital messaging display screen gives step-by-step instructions Charges conventional Calcium, AGM/GEL, leisure, stop/start batteries and the next generation Lithium vehicle batteries Fully automatic float mode ensures that the battery is kept fully charged and ready to use, for extended periods of time Reverse polarity protection, thermal runaway protection and automatic shut-off are included as standard IP64 Rating Specification: Output: 12V  Output Charge: 3A  Battery Range: 3-50Ah  Cable Length: 2mtr  Supply: 240V  Weight: 0.8kg