【Smart Automatic Charger】 12V 20 Amp Max, 24V 10Amp 7- stage battery charger suitable for all types of Calcium, GEL and AGM, Wet, EFB. A mode can be selected to charge car truck batteries, motorcycle batteries, or AGM batteries , 2AH - 200 AH , input 110V~240V , LifePo4 Lithium battery 【3 Level Adjustable Current】Car Battery Charger can choose suitable charge current by yourself,you can choose (12V/5A,24V/3A)(12V/10A,24V/5A)(12V/20A,24V/10A).Please select the appropriate current to charge your battery according to your needs. 【Wide Application】Trickle charger can apply to most of battery like Lithium,Lifepo4,Lead-Acid (PB/AGM/GEL/EFB,MF,FLOODED,VRLA,SLA,wet batteries),For:cars,golf carts,motorcycles,electric motorcycles, motor boats,lawn mowers,forklifts,tractors 【Trickle Charge & Maintainer/Pulse Repair】Maintainer/Pulse Repair to activate your battery, the unique battery protection function allows you to charge your battery quickly and safely, and trickle charging is the perfect final protection for your battery to be fully charged. 【Temperature Detection & Multiple Protection】With built-in temperature sensor, it can be charged normally from -10°C (14°F) to 40°C (10°F). Built-in multiple detection, temperature protection, low voltage protection, overvoltage protection, short circuit protection, overcurrent protection, electrostatic spark protection. Allows you to recharge with complete peace of mind. Schematic diagram of various charging conditions Charge Voltage & Current: Display real-time voltage or current Repair Mode: Repair battery Temperature: Win. when the temperature is below 10°C, Raise the charge voltage Sum.when the temperature is above 28°C, Reduce the charge voltage Test Mode: When the battery is about to be fully charged, it will automatically continue to charge the battery in trickle mode. Complete Charging: When the battery is fully charged, it will display "FUL" Low Voltage: Battery voltage is too low or battery can not save the power