12/24 V charger-starter. 20-30-40-60 A. Charge up to 650 A batteries, start up to 400A. For charging and starting vehicles with WET (lead-acid), Gel, MF (maintenance-free lead-acid), EFB (enhanced lead-acid), AGM, Gel (Absorbed Glass Mat) batteries. Totally intelligent charger, with one of the most advanced charging curves on the market with 8 stages.