Thunder TDR02021 DC-DC 20A Battery Charger with Solar Input and Bluetooth LCD Screen A 12/24V DC-DC battery charger from Thunder, the TDR02021 delivers 20A output with a 300W MPPT-regulated solar input, IP67 waterproof rating, and a remote mount Bluetooth LCD screen, compatible with GEL, AGM, lead acid, and lithium batteries. Product overview The Thunder TDR02021 is a 12/24V DC-DC battery charger with 12V output and a 300W MPPT-regulated solar input, designed for dual battery and off-grid charging setups. It comes with an easy to read remote mount Bluetooth LCD screen for monitoring charging status, and supports GEL, AGM, lead acid, and lithium battery charging profiles. The unit is IP67 rated for full water resistance and operates across a 0 to 90 degree temperature range, with internal temperature monitoring and power output control. Overcharging, short circuit, temperature, and reverse polarity protection are built in, and a modular design using MST (Modular Sense Technology) allows amperage outputs to be easily increased. The unit measures 190 x 125 x 40mm with a 75 x 75 x 20mm remote screen, and is backed by a one-year warranty. Features and benefits Easy to read remote mount Bluetooth LCD screen: Provides clear monitoring of charging status from a convenient remote mounting location. 12-24V system input with 12V output: Compatible with both 12V and 24V vehicle electrical systems, delivering a regulated 12V output. 0-90° operating temperature range: Rated to operate across a wide temperature range for demanding Australian conditions. IP67 rated: Fully waterproof rated for reliable operation in wet and dusty environments. Modular design with MST: Modular Sense Technology allows amperage outputs to be easily increased for expanded charging requirements. Lithium battery charging profile: Includes a dedicated charging profile for lithium batteries in addition to GEL, AGM, and lead acid. Internal temperature monitoring and power output control: Monitors internal charger temperature and adjusts power output accordingly for safe operation. Overcharging, short circuit, and temperature protection: Built-in protection features safeguard the charger and connected batteries. Reverse polarity protection: Protects the unit from damage in the event of incorrect wiring connection. 300W MPPT-regulated solar input: Accepts up to 50V solar input with MPPT regulated output, supporting up to 300W of solar. Technical specs Specification Detail SKU TDR02021 Brand Thunder Type DC-DC and Isolators Voltage 12/24V Length 190mm Width 120mm Height 40mm Unit Dimensions 190 x 125 x 40mm Screen Dimensions 75 x 75 x 20mm Battery Type GEL, AGM, Lead Acid, Lithium Environmental Rating IP67 Temperature Range 0-90°C Solar Input Up to 50V, MPPT Regulated, Up to 300W Warranty 1 Year Weight 0.5kg Compatible with The TDR02021 is compatible with GEL, AGM, lead acid, and lithium battery types, 12V and 24V vehicle electrical systems, and solar panel systems up to 300W with a maximum 50V input. Frequently asked questions What battery types is the TDR02021 compatible with?The TDR02021 is compatible with GEL, AGM, lead acid, and lithium battery charging profiles. What is the output of the TDR02021?The TDR02021 accepts a 12-24V system input and delivers a 12V output at 20A. Does the TDR02021 include a display?Yes. The TDR02021 comes with an easy to read remote mount Bluetooth LCD screen for monitoring charging status. What solar input does the TDR02021 support?The TDR02021 accepts up to 50V solar input with MPPT regulated output, supporting up to 300W of solar. Is the TDR02021 waterproof?Yes. The TDR02021 is rated IP67 for full water resistance.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 & TrainingOnly 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 ProtectionWe 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 SupportIf 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 InvestmentBuying 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! h2, h3 { color: #000080 !important; } h2 { font-weight: bold; margin-top: 1rem; margin-bottom: 0.5rem; } h3 { font-weight: bold; margin-top: 1rem; margin-bottom: 1rem; }
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