CARSPA 12v 40A Battery Charger Specifications: Voltage: 12V Maximum charge rate: 12V 40A 7 stages of charging: Desulphation, soft start, bulk, absorption, battery test, recondition and float Input voltage range: 190 – 265V Cooling Fan: Automatic Temperature and Load Controlled Dimensions: 225 x 175 x 95 mm Net Weight: 2.1 KG Automatic protection: Overvoltage, overheat, output short circuit, reverse polarity Battery Charger buttons Button 1, cycles through Display modes: 1) charging voltage/voltage of battery, 2) Charging current, 3) # stage of charging cycle Button 2, 1) Constant 12v switchmode power supply mode, 2) Battery type GEL, 3) Battery type AGM, 4) Battery type Wet Terminal are: eye terminals Suitable for 12v batteries between 150AH and 700AH.