THE LATEST INTELLIGENT CPU CONTROL - Portable battery charger/maintainer automatically adjusts charging current and maintainability based on temperature. Automatic detection of room temperature so that winter goes at full speed and summer is not overloaded. Optimized for all climates, easy to handle with a variety of tough voltage environments. HIGHLY COMPATIBLE - Suitable for 12V and 24V batteries, making it easy to use. It works with Calcium, AGM, EFB, MF, FLOODED, VRLA, SLA, and WET batteries, meaning the car battery charger can be used for car, truck, motorcycle, RV, SUV batteries, ATVs, golf carts, tricycles, agricultural vehicles, buses, etc. NOTE: LITHIUM BATTERY DEACTIVATED. PULSE REPAIR FUNCTION - Intelligent control system, robust pulse repair technology, removes vulcanization, easily repairs slightly damaged batteries, reduces water loss, provides more powerful engine starts, and extends battery life. NOTE: It cannot activate a dead battery or repair a severely damaged battery; nor can it repair a refurbished battery. MULTIPLE PROTECTIONS AND SAFETY IN USE - This automatic smart battery charger features safety technology including built-in circuit protection, spark-free system, reverse polarity protection, overcharge, overvoltage, and overheating protection, and stable performance for longer life. FULLY AUTOMATIC CHARGING WITH LCD SCREEN DISPLAY - Battery charger connects and is left to charge and maintain your batteries automatically for a long time, with smart digital LCD screens indicating status and battery status, charging voltage, charging current, indoor temperature, summer mode, winter mode, etc. PLUG AND PLAY - No complicated steps; connect and charge, stay at home and regulate your batteries yourself. All-in-one battery solution that battery charger, battery maintainer, and trickle charger. The essential tool for your garage. NOTE: IT CANNOT START THE CAR; IT ONLY HAS A BATTERY CHARGING FUNCTION.