GOOLOO S4 4 Amp Car Battery Charger Automotive, 6V/2A 12V/4A Smart Trickle Charger Maintainer with Supply Mode, Automatic Motorcycle Battery Charger for Truck Lawn Mower RV Boat Lead-Acid Battery - speed-4

• It's the all-in-one universal charging solution - battery charger, battery maintainer, trickle charger, float charger, plus battery desulfator. Designed for 6-volt and 12-volt lead-acid batteries, like WET, SLA, GEL, AGM, FLOODED, VRLA batteries, and more, plus 12volt LiFePO4 batteries. Auto repair and pulse current charging devulcanize battery to restore the battery lost performance with the GOOLOO 10-stage intelligence charging program, and can charges batteries as low as 3 volt. Intelligently adapt to different ambient temperatures to eliminate over-charging in hot climates and under-charging in cold climates. The LCD display showing charging voltage, charging mode, battery levels.etc. 'V' blinks on the screen means enter maintenance mode. Not only a battery trickle charger, also an advanced battery charger maintainer. A fully-automatic, worry-free smart battery charger for everyday and long time use with zero overcharge, for cars, automobiles, motorcycles, scooters, lawn mowers, ATVs, tractors, trucks, SUVs, RVs, boats, PWCs and more. We provide an 18-month warranty, if you have any questions, please feel free contact us, our customer service team will provide you with technical support and warranty services.