This MPPT solar charge controller applicable battery types:Sealed(SEL),Gel(GEL),Flooded(FLD),User-defined(USER) AGM,LiFePO4(4 Strings/7 Strings/8 strings),Ternary lithium battery (3 Strings/6 strings/7 strings),Custom lithium ion battery(Lit). Mainly used in off-grid power generation systems, monitoring systems, solar home systems, telecommunications, forest fire protection applications, solar street light systems, Recreation Vehicles and Boat. -20A,30A,12V/24V automatic recognition -40A,50A,60A,12V/24V/48V automatic recognition -With Bluetooth, waterproof function