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


MPPT Dual Battery Charger – 12V 20A DC to DC

In stock


20A DC-DC Charger


Features and further details:

If you are planning off-grid camping, a DC-DC charger will be your perfect companion for a dual battery setup when you cannot access the main power. This device, which is designed to do a full charge cycle with the ability to choose either Lead Acid, AGM, Gel, calcium, Li-ion batteries and apply the suitable charging profile to prolong their lifespan, also incorporates Re-selection Ready mechanism that allows you to re-select the battery during charging by long pressing “POWER”. And it can be connected indefinitely when you’re all set up. This DC-DC charger is also a fully multi-input charger that is able to charge from either an alternator to get the best possible rate of flow into your secondary battery and keep it up on the drive or via solar power with the built-in MPPT controller for faster charging and reducing the load on your engine and multiple protections are integrated to keep the battery safe especially in case of accidental terminal misconnection.

  • Dual Input: This Charger is designed to effectively pull power from solar panels (up to 20A) or the 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 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, thus reducing the load on your engine. The controller can detect the source voltage and power (i.e. solar panel) in real-time, track the maximum voltage and current value (VI) so that the system can charge the battery with the highest efficiency.
  • 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 prolonging the lifespan of the charger.
  • Sturdy Construction: Sturdy aluminium 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.
  • Smart Alternator Compatible: The ACC wire can be wired to the ignition to adjust voltage cut off, which is suitable for modern vehicles, trailers and caravans.
  • User-Friendly Design: The LED indicator shows the real-time stage of charging and memory function is integrated to make your charging more convenient.
  • This DC to DC Battery Charger works with both solar input and DC input.



  • Type: Multi-Stage
  • Input:
         [DC Battery: 12.5~16.0 Volts]
         [Solar Input: 16.0-25.0 Volts]
  • Output/Charging Voltage: 14.4~15.4 Volts (Stops charging when alternator output or vehicle battery is 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:
         [14.4V(Lead Acid)] 
  • Absorption: Constant voltage with automatic amperage control
  • Equalisation: Automatic
  • Float Charge Voltage:
         [13.5V(Lead Acid)]
  • Float Charge Current: 100mA
  • Battery Range: 60 to 600Ah
  • 0-1 Metres: 12AWG
  • 1-5 Metres: 8 AWG
  • 5 metres+: 6 AWG 


Warranty: 1 Year 

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Additional information

Weight3000 g
Dimensions35 × 25 × 10 cm



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