【QUICK CHARGING】12V 6-Amp quick battery charger. Charge or repair all 12-volt lead-acid automotive, marine and deep-cycle batteries including AGM, GEL, SLA, and 14.6V-29.2V lithium iron (LiFePO4) batteries. Flooded in cars, trucks, SUVs, motorcycles, lawnmowers, boat marine, etc. and present for daily use. 【UPGRADED 9-STAGES】The first battery charger that adopts 9-stage charging process, much safer and more efficient. Specially designed trickle charge mode, it will automatically enters trickle/float charging mode after fully charged, keep maintaining your batteries during this winter and holidays, leave batteries for months and still fully charged like brand new when you come back 【LARGE LED VISUALIZED SCREEN】 Extra large color LED screen not only clear to see under the sunlight but also displays the charging and battery status; charge voltage and current, inside temperature (°C), charge percentage, summer mode, winter mode, etc. 【OVERCHARGE PROTECTIONS】Smart control, temp compensation in hot climates and under-charging in cold climates, reverse protection, cooling system, overcurrent, fireproof material, overvoltage, short circuit. Battery trickle charger with multiple protection ensure the safety charging at anytime anywhere 【HIGH-EFFICIENCY PULSE REPAIR】Automatically detects battery sulfation and acid stratification, takes the newest pulse repair function to restore lost battery performance for stronger engine starts and extended battery life. Note: can not activate or charge totally dead batteries 【SMART LIFEPO4/LEAD ACID CHARGER】Battery trickle charger and maintainer with multiple protections ensures the safety of charging perfectly for maintaining batteries over months in this winter or holidays. Avoid battery failure in advance. No worries! Perfect household tool and present for daily use! Smart control, temp compensation in hot or cold climates, reverse protection, cooling system, overcurrent, fireproof material, overcharge, short circuit