FOXSUR Universal charger, It is a car charger with 6 charging modes, with display, 2-in-1 lithium battery and lead-acid battery. Features: This is a fully automatic battery charger with 7 charge stages. Automatic charging protects your battery from being overcharged. So you can leave the charger connected to the battery indefinitely. Repair function: This lithium car battery charger may also help restore drained and sulphated batteries. Intelligent digital display: Chargers that display the charging voltage, charging current, battery charge and temperature. Switchmode technology: Yes Polarity protection: Yes Output short protection: Yes Non battery link protection: Yes Over voltage protection: Yes Over temperature protection: Yes Compatible battery types: Lithium battery Most types of lead acid batteries including Calcium, GEL and AGM, Wet,EFB, etc Applicable to various vehicles: It's automatic battery chargers for cars, motorbike, lawn mowers, tricycles, electric vehicles, agricultural vehicles, off-road vehicles, pickup trucks, boats, etc. Package Includes: 1 x car battery charger 1 x charger manual Warm Tips: Adaptation: 12V/24V universal. Battery connection: red clip clip battery positive (+), black clip (-). Turn off the power source before connecting or disconnecting to the battery. It can not activate a dead battery or repair a battery which is damaged seriously; it also can not repair a battery back to 100% new. FOXSUR car battery charger is covered with a protective film. After removing the protective film, you will see a brand new screen.