Thunder 12 Volt 20Amp DC to DC Charger – TDR02020


Thunder 12 Volt 20Amp DC to DC Charger – TDR02020

In stock


Thunder 12V 20A DC-DC Charger – TDR02020

Thunder TDR02020 – 12V 20Amp Charger with solar regulator

(Free Shipping – Refer Below)



Thunder helps take you places you ve never been before, making adventure more accessible and attainable for 4WD and exploration enthusiasts. Perfect for the working adventurer, Thunder products have been tested and developed to handle any situation with ease and still supplying a quality charge. Easy to install, the Thunder DC to DC charger is the smart and effective way to charge your auxiliary battery, whichever the vehicle. Utilising a unique pulse charging algorithm with the intelligence to determine the best charge rate for your auxiliary battery (excluding lithium), this charger is the perfect addition to any vehicle requiring the management of a dual battery setup.



Part No: TDR02020

Brand: Thunder Auto

Description: 20A DC-DC Charger with solar regulator.

Warranty: 12 Months.

Output: 20A.

Input/output fuse rating: Minimum 30A.

Vehicle input voltage range: 12.2V – 17V (Note: If voltage increases over 12V the Thunder DC-DC will shut off, reset will be needed).

Min/max charging voltage: 13.1V – 15.2V (stops charging when alternator or vehicle battery below 12.2V).

Solar input voltage range: 13V – 25V.

Maximum solar watt input: 300W (Note: Exceeding 300W of solar will damage the Thunder DC-DC charger).

Charging style: 8 stage from vehicle and 3 stage from solar.

Operating Temperature: 0 C – 60 C (current derates after 60 C).

Float voltage: 13.8V.

Standby current: 3mA.

Battery range: 18 – 250Ah.



20A DC-DC Charger Manual

Thunder Battery Chargers Brochure


Free shipping – Free shipping relates to single units only to all Australian destinations. If multiple units are required shipping charges may apply. We will contact you if/when freight charges apply. Please provide your phone number on the order form so we can contact you. Alternatively please contact us with all freight enquires. Store pick-up is available.

Additional information

Weight 1 g
Dimensions 18 × 13 × 5.5 cm

12 Volt



Weight actual (kg)


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