Features of FOXSUR 12-Amp Fully-Automatic Smart Charger. FOXSUR 7-Stage Smart Battery Charger/ Maintainer is designed for 12V and 24V Lead-Acid,LiFePO4 batteries with capacity from 6AH-200Ah(12V),6AH-100Ah(24V) suitable for cars, trucks, motorcycles, golf cart,lawn mowers, boats, RVs, SUVs, ATVs, etc. Microprocessor Control (CPU). 7-STAGE AUTOMATIC CHARGING. 1-stage:Battery desulphation; 2-stage:Soft start charging; 3-stage:Bulk charging; 4-stage:Absorption charging; 5-stage:Battery test; 6-stage:Recondition charging; 7-stage:Float&maintenance charging. FOXSUR Pulse Repair Battery Charger are suitable for most battery types including Calcium, Gel AGM, LiFePo4, Wet, lead Acid batteries etc. Switchmode technology: Yes. Polarity protection/Output short protection. Non battery link protection/Over voltage protection. Over temperature protection/Heat sink: Yes. Input voltage: 100-240V AC, 50-60Hz. Rated output: 12V 12A , 24V 6A. Minimum start voltage: 8.0V. Battery range: 6-200Ah. Thermal protect: 65'C+/-5'C. Efficiency: App. 85Percent. Compliant standards: CE,FC,RoHS, IEC60335, EN61000, EN55014. Dimension (L×W×H): 170×100×65mm. Weight: 730g. Package Includes: 1 x Smart battery charger 1 x Charger manual 1 x Packing box 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. FOXWER car battery charger is covered with a protective film. After removing the protective film, you will see a brand new screen.