Description
Thunder TDR02020 DC-DC 20A Charger with MPPT Solar Regulator
Thunder helps take you places you've never been before, making adventure more affordable and accessible for 4WD enthusiasts. The TDR02020 is a 20A DC-DC charger with a built-in MPPT solar regulator supporting up to 300W of solar, designed for reliable dual battery management.
Product overview
Designed for the working adventurer, Thunder products have been tested and developed to handle anything you can throw at them without breaking the bank. Easy to install, the Thunder DC to DC charger is the smart way to charge your auxiliary battery, no matter your vehicle.
The Thunder DC-DC Charger utilises a unique pulse charging algorithm with the intelligence to determine the best charge rate for your auxiliary battery, excluding lithium, making it the perfect addition to any vehicle requiring the management of a dual battery setup. The built-in MPPT solar regulator manages solar panels at maximum efficiency, capable of handling up to 300W of solar at 25V, and the charger automatically switches to the solar input when the vehicle battery is turned off or the main battery drops to 12.2V.
Features and benefits
20A output: Charges your auxiliary battery while driving, with a pulse charging algorithm that determines the best charge rate for your battery type, excluding lithium.
MPPT solar regulator: Regulates solar panels at maximum efficiency, capable of handling up to 300W of solar at 25V.
Automatic solar switching: Automatically switches to the solar input when the vehicle battery is turned off or the main battery drops to 12.2V.
Splash resistant: Splash resistant construction, though not IP rated.
Easy to read LED display: A comprehensive LED display provides clear charging status information at a glance.
Simple installation: Installs with 4 mounting holes and 4 easy-to-use wiring studs for straightforward setup.
Thermal protection: Rate of charge begins to decrease at 50 degrees and fully cuts out at 80 degrees to protect the unit and battery from overheating.
Technical specs
| Specification |
Detail |
| SKU |
TDR02020 |
| Brand |
Thunder |
| Type |
DC-DC Charger with MPPT Solar Regulator |
| Charger Output |
20A |
| Solar Capacity |
Up to 300W at 25V |
| Auto Solar Switch Voltage |
12.2V |
| Water Rating |
Splash Resistant (Not IP Rated) |
| Display |
LED |
| Mounting |
4 Mounting Holes, 4 Wiring Studs |
| Thermal Cutoff |
Reduces at 50°C, Cuts Out at 80°C |
Compatible with
The TDR02020 is compatible with auxiliary battery dual battery setups, excluding lithium batteries, and solar panel systems up to 300W at 25V. Confirm your specific battery type and solar panel specifications before purchase.
Frequently asked questions
What is the output of the TDR02020?
The TDR02020 provides a 20A output to charge your auxiliary battery while driving.
Does the TDR02020 support lithium batteries?
No. The pulse charging algorithm determines the best charge rate for your auxiliary battery, excluding lithium batteries.
What solar panel capacity does the TDR02020 support?
The built-in MPPT solar regulator supports up to 300W of solar at 25V.
When does the TDR02020 switch to solar input?
The charger automatically switches to the solar input when the vehicle battery is turned off or the main battery drops to 12.2V.
Is the TDR02020 waterproof?
No. The TDR02020 is splash resistant but is not IP rated for full waterproof protection.
Legendary Products & Support From Authorized Dealers
When you choose Frankies BrandBeast, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & Training
Only authorized Frankies BrandBeast dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty Protection
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don’t be misled by unauthorized sellers who can’t provide genuine warranty support.
▸ Reliable Customer Support
If you ever run into an issue, you’re backed by Frankies BrandBeast’s official manufacturer’s warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your Investment
Buying from an authorized dealer ensures you’re getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few bucks worth losing all that?
Choose wisely. Buy from Frankies BrandBeast today!
