20 Amp Car Battery Charger, 12V and 24V LiFePO4 Battery Charger (AGM/SLA/Gel/Wet/VRLA), Trickle Charger for Optimal Performance of Automotive, RV, Lawn Mower, Golf Cart and Marine Batteries. Multifunctional Battery Charger -The auto battery charger is a multifunctional battery charger for 12V and 24V Lithium, LiFePO4, Lead Acid (AGM/SLA/GEL/VRLA...), etc. for all types of cars, campers, RV, and boat batteries. The car battery charger can meet your different types of battery charging needs. Please select the correct type when charging. High-efficiency Trickle Charging -This trickle charger uses trickle technology to maintain efficient performance even after a long period of use. The 12V battery charger can automatically detect and adjust the output to ensure the best performance and has overload protection to avoid over-discharging or over-charging. Easy to operate - The battery charger automotive design is simple and clear, just plug it into the car power port for charging, no tedious operation steps. It is also very easy to operate, just connect the positive and negative terminals to the corresponding position of the battery to start trickle charging quickly and steadily. Note: Cannot activate or charge a completely dead battery. Lightweight and Portable - The 20 amp battery charger is very lightweight, weighing only 1.8 lbs, making it easy to carry and store. The car battery charger mode has a memory function. After charging, it defaults to the state mode used before the last power failure. Note: It can not jump start the car, only the battery charging function. Need to connect power. Visualize Charging - The lithium battery charger has a clear display LCD screen that shows charging voltage and current, internal temperature, charging percentage, summer mode, winter mode, etc. An integrated thermal sensor detects ambient temperature and changes the charge to eliminate overcharging in hot climates and undercharging in cold climates.