WIDE RANGE OF APPLICATIONS: The car battery charger is suitable for 12V and 24V lead-acid battery from 6Ah-150Ah (12V), 6Ah-100Ah (24V), including AGM, Calcium, Gel, MF, SLA, VRLA, WET batteries. Ideal for charging and repairs cars, trucks, motorcycles, lawn mowers, boats, ATV, SUV, etc. Input voltage: 110-265V. MULTIPLE SAFETY PROTECTION: Reverse polarity protection (wrong polarity connection prompt), spark-proof, overvoltage protection, overcurrent protection, short circuit protection. Built-in a fan to prevent overheating while charging. Secures safety during charging. 6 CHARGING MODES: The smart charger can automatically detect outside temperature, then auto-switch between SUMMER or WINTER mode and self-appropriate raise and reduce the charging voltage. CAR/TRUCK mode (12V 8A / 24 6A) for fast charging big batteries, MOTORCYCLE mode (max 1.5A) for small batteries, AGM mode for AGM, and calcium batteries, REPAIR MODE for repairing old batteries. INTELLIGENT CHARGING: The 3-STAGE microprocessor controlled charging process provides the best possible application and enables efficient battery charging. The charger will auto-off when fully charging. The LCD digital display will carousel shows temperature, charging voltage, current, and battery power. Note: The screen is covered with a protective film that needs to be removed. ADVANCED REPAIR MODE: Built-in advance battery REPAIR mode to help to recover old/idle batteries and extend battery life. The high frequency and low-frequency pulse technology has good repair and activation effects. Note: It can not activate a dead battery or repair a battery that is damaged seriously.