Battery Tender 12V / 6V Lead Acid / Lithium Charger The Battery Tender AMP Power Tender elevates charging technology, offering both recharge and maintenance capabilities beyond conventional trickle chargers. This versatile charger efficiently charges automotive, marine and powersport batteries, supporting 6 Volt and 12 Volt Agm, flooded, and gel batteries for everyday use. Features: Selectable 12V or 6V output Modes for AGM / Standard / GEL or Lithium (LiFePO4) battery types 3 or 4 amp models 3 amp charges only powersport-sized batteries / maintains all batteries 4 amp charges automotive, light truck and powersport-sized batteries / maintains all batteries 12V only for lithium ISM (Infinite Sequential Monitoring) of the fully automatic 4-step charge process: Qualification, bulk charge, absorption, float Microprocessor controlled Spark proof even when output leads touch Reverse Polarity Protection - no charger or battery damage State of charge LED indicators Lead acid safety timer: 25 hours Lithium safety timer: 15 hours Alligator clip combo cable connects to batteries or remove clips for ring terminal application Dimensions: 6.8 x 3.68 x 1.96 (charger only) Agency approval: BC / FCC 5 year warranty