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



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Gear up for your adventures with the ultimate dual-battery solution: the ATEM POWER 20A DC to DC charger. With its advanced features and superior performance, this DC-DC charger is the perfect companion to keep your batteries fully charged and ready for action, ensuring you never run out of power when you need it most. The ATEM POWER DC to DC charger is an upgraded, automatic multi-stage charger that delivers up to 20A of power. It charges Lead Acid, AGM, Gel, calcium, LiFePO4 batteries efficiently, eliminating compatibility concerns. Moreover, It seamlessly adapts to your vehicle's smart alternator and maximizes solar power through the integrated MPPT controller for optimal utilization. Safety is paramount with built-in protection against over-charge, short circuit, over-temperature, thermal load, solar input overload, and input/output reverse polarity. With this charger, power limitations won't hold you back. Conquer the outdoors and embrace adventure with confidence.
  • Battery Re-selection Made Easy: Switch batteries effortlessly! Our ATEM POWER DC to DC charger allows quick re-selection by long-pressing "POWER."
  • Smart Alternator Compatible: Worried about compatibility? Our charger works flawlessly with smart alternators in 4x4s, ensuring a seamless power connection.
  • Boost Efficiency with MPPT: This DC to DC charger includes a MPPT controller, increasing charging efficiency by up to 30% when connected to solar panels.
  • Dual Input Power: Our charger utilizes the DC source or solar power, ensuring a stable and consistent energy source for your auxiliary battery.
  • Advanced Charging Algorithm: Our smart multi-stage charging process optimally charges your batteries, delivering them to their peak levels for extended use.
  • Smart Protection: Safeguard your device against solar input overload, over-charge, short circuit, over-temperature, thermal load, and reverse polarity.
  • Wide Battery Compatibility: With our upgraded charging profile, this DC to DC charger is compatible with Lead Acid, AGM, Gel, calcium, LiFePO4 batteries.
  • Ultimate Versatility: This compact DC to DC charger is a must-have for 4WDs, caravans, RVs, trucks, campers, trailers, campervans, commercial vehicles, and boats.
  • Convenient and Intuitive: The LED indicator provides real-time charging stage updates, while the integrated memory function enhances charging convenience.
Type:Multi Stage

DC Battery: 13.0~16.0Volts

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)
Min. Solar Input Current:


Output Current:

DC Output: 20A

Solar Output: 20A

Minimum Start Voltage:2.5 Volts-For battery being charged
Soft Start:Yes
Operational Temperature:-10℃~45℃
Soft Charge Current:DCDS20@20A
Bulk Charge Voltage:14.7V(AGM/Gel)14.4V(Lead Acid)15.4V(Calcium)14.4V(LiFePO4)
Absorption:Constant voltage with automatic amperage control
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
  • 1x ATEM POWER 20A DC-DC Charger
  • 1x Manual
1 Year Warranty

Delivery :

  • Please note that deliver to PO BOX address is available for products below 22kg and 1M length. Please make sure you have provided a correct physical address during checkout on products of excessive size.
  • Our shipping system cannot accept order changes or cancellation after payment is made. You can follow our return policy for more information.
  • To aid in smooth and speed of delivery, ensure your address is correct during the checkout. With correct information provided, your order is dispatched within 1 business day. Any changes to address after payment made will not be considered.
  • Please allow 2 to 12 business days for product to arrive. We highly recommend to provide an answerable contact number and email address as we do make call to follow up item delivery status.
  • Your item will be sent via Australia Post or courier depending on its size and weight.

Australia Post :

  • You will receive a notification email along with a tracking number.
  • If you are not at home during normal business hours (9am – 5pm), you will receive a card indicating the item is required to be picked up from a local depot. A signature is required for collection with a valid photo ID.
  • A re-delivery fee will be charged to you for items that are returned to our warehouse due to incorrect address or failure to collect from local depot.

Courier :

  • Delivery is not available on weekends, public holidays or after business hours.
  • Please note a re-delivery fee will be charged to you for items that are returned due to incorrect address or failure to collect from local depot.
  • We aid to provide door to door delivery for every customer. However, buyers in remote areas may be required to collect item from their nearest freight depot. Please ensure if you have any questions about the re-delivery service, we are always here to back you up.

Pickup :

Please note Pickup is available only for unpaid orders


Collection required within 3 business days of stock being available.



We provide free delivery for most metropolitan areas in Australia, but there may be additional delivery costs associated to some areas. 

Any delivery charges for your order will be shown once your postcode is entered during the checkout process.

To view the list of non-free shipping delivery postcodes , please check the table below/












4421,4450-4499, 4680, 4700-4805, 9920-9959


4806-4899, 4900-4999, 9960-9999