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DC-DC Chargers

Discover LiTime high-performance DC to DC battery chargers designed for efficient charging of your batteries from your vehicle's power source. Ideal for RVs, boats, and off-grid systems, these chargers ensure optimal battery health and longevity. Enjoy features like smart technology, compact design, and easy installation for all your energy needs.

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12V 40A DC-DC with MPPT

600W Max. Solar Input

600W Max. Alternator Input

Up to 93% Charging Efficiency

60A/30A Charging Current

1000W Max. Alternator Input

Up to 90% Charging Efficiency

40A/20A Charging Current

680W Max. Alternator Input

Up to 90% Charging Efficiency

$149.99

$219.99

FAQ

What is a DC-DC charger, and why do I need one?

A DC-DC charger converts and regulates power from a vehicle’s alternator to safely charge a secondary battery, ensuring optimal charging for lithium and other battery types.

What type of alternator are LiTime DC to DC on board battery chargers compatible with?

The LiTime DC-DC battery chargers are compatible with both conventional and smart alternators. However, since conventional alternators provide a steady voltage during charging and smart alternators adjust their output based on operating conditions, it is essential to connect the charger to the smart alternator using the included Signal cable through the Vehicle Ignition Port.

Can I use LiTime DC-DC charger for lithium and lead-acid batteries?

Yes, our DC-DC charger is engineered for versatility and performance. It not only works seamlessly with a wide range of batteries but also includes powerful features to maximize their potential.

Multi-Chemistry Support: Fully compatible with 12V Lithium (LiFePO4), Gel, AGM, and Calcium batteries.
100% Full Charge: Intelligently charges your batteries to their absolute maximum capacity, ensuring you have all the power you paid for.
Lithium Jump-Start: Features a unique recovery mode designed to "wake up" and jump-start lithium batteries that have been over-discharged to a low voltage.

Is it safe to use LiTime DC-DC charger with my vehicle's alternator?

Yes, the LiTime DC-DC charger is equipped with a full suite of high-quality safety measures. It actively protects against over-voltage, low-voltage, over-temperature, short circuits, and reverse polarity to ensure safe, reliable operation.

Additionally, its advanced design isolates the input from the output, which prevents voltage transfer errors and protects sensitive electronics from interference during charging.

How do I know if the charger is working properly?

The charger includes LED indicators to show the charging status.

Why is my DC to DC charger not working?

If your DC-DC charger isn't charging your LiFePO4 battery, even with normal or flashing lights, the issue is often related to wiring, settings, or vehicle voltage.

We've created a detailed troubleshooting guide to help you diagnose and fix the problem. You can find it here: DC-DC Charger Troubleshooting Guide

How does the DC-DC charger differ from a regular AC charger?

A DC-DC charger converts DC voltage from one battery bank to another. It’s ideal for charging a 12V battery from a vehicle’s electrical system, whereas an AC charger requires an external AC power source (like a wall outlet).

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