20A DC to DC Battery Charger MPPT 12V Dual Battery System 4WD Lithium & Solar

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  • Regular price $259.00

  • Dual Input: This Charger is designed to effectively pull power from solar panel (up to 20A) or vehicle’s alternator to charge your auxiliary battery.
  • Multi-Stage Charging: This charger integrates standby, pre-charge, constant current charging, constant voltage charging, full charge and re-charge.
  • Multi Battery Selection: This DC to DC charger by ATEM POWER is compatible with Lead Acid, AGM, Gel, calcium, LiON batteries.
  • Built-In MPPT Regulator: The regulator is designed to harvest up more energy from the solar panel, thus reducing the load on your engine.
  • Multiple Protection: It integrates over-charge, short circuit, over-temperature, thermal load, solar input overload, input/output reverse polarity protection.
  • Internal Temperature Monitoring: This mechanism can effectively protect the circuit board, thus prolong the lifespan of the charger.
  • Sturdy Construction: Sturdy aluminum housing is built to resist harsh conditions and quality wires are built for long last durability.
  • Upgraded Charging Algorithm: This algorithm is designed to select the optimum charge mode and revive your discharged battery.
  • User Friendly Design: The LED indicator shows real-time stage of charging and memory function is integrated to make your charging more convenient.
  • Superior Versatility: This DC to DC charger is ideal for 4WDs, caravans, RVs, trucks, campers, trailers, campervans, commercial vehicles and boats.
1 Year Warranty


What's In Box
  • 1x  20A DC-DC Charger
  • 1x Manual



Multi Stage

DC Battery: 12.5~16.0Volts

Solar Input: 16.0-25.0 Volts

Output/Charging Voltage 14.4~15.4 Volts(Stops charging when alternator output or vehicle battery below 12.5 volts)
Output Current

DC Output: 20A

Solar Output: 20A

Minimum Start Voltage 2.5 Volts-For battery being charged
Soft Start Yes
Soft Charge Current
Bulk Charge Voltage 14.7V(AGM/Gel)14.4V(Lead Acid)15.4V(Calcium)14.4V(LiON)
Absorption Constant voltage with automatic amperage control
Equalisation Automatic
Float Charge Voltage 13.5V(AGM/Gel)13.5V(Lead Acid)13.5V(Calcium)
Float Charge Current 100mA
Battery Range
60 to 600Ah
0-1 Metres 12AWG
1-5 Metres
5 Metres+ 6 AWG