Battery Charger DC to DC 12V 20A MPPT System Kit Isolator Dual Atempower

$286.99 $139.95 SAVE 51%

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  • 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, Li-ion batteries.
  • Built-In MPPT Regulator: The regulator is designed to harvest up more energy from the solar panel to reduce 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 to prolong the lifespan of the charger.
  • Sturdy Construction: Sturdy aluminum housing is built to resist harsh conditions and quality wires are built for durability.
  • Upgraded Charging Algorithm: This algorithm is designed to select the optimum charge mode and revive your discharged battery.
  • Smart Alternator Compatible: The ACC wire can be wired to the ignition to adjust voltage cut off, which is suitable for modern vehicle,trailers and caravans.
  • User Friendly Design: The LED indicator shows real-time stage of charging and memory function is integrated to make your charging more convenient.


  • Type: Multi Stage
  • Warranty: 1 year
  • Input: 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: DCDS20@20A
  • Bulk Charge Voltage: 14.7V(AGM/Gel)14.4V(Lead Acid)15.4V(Calcium)14.4V(Li-ion)
  • 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: 8 AWG
  • 5 Metres+: 6 AWG 
  • Package contents: 1x ATEM POWER 20A DC-DC Charger, 1x Manual

Please note

  • Please allow some leeway in size dimensions due to hand measurements.