24v Lithium Battery Chargers

To choose the right charger, you need to match three things: Voltage, Bank Count, and Chemistry.

Check your Voltage: Ensure the charger matches your battery bank’s voltage (e.g., a 24V trolling motor requires a 24V charging output).

Count your Banks: How many separate battery systems do you want to charge at once?

• 1 Bank: Best for single-battery setups.
• 2 Banks: Ideal for a 24V trolling motor + a 12V starting battery.
• 3 Banks: Perfect for a 24V trolling motor + two 12V batteries (e.g., house and starting).

Confirm Battery Chemistry: While our 24V banks are dedicated specifically to Lithium, our 12V banks are “hybrid-ready,” meaning they can charge Lithium, AGM, or Lead-Acid batteries simultaneously.

For 24V only: Use the Single Bank 12 Amp.

For 24V + 12V mixed setups: Use our Two Bank (24V 10A / 12V 15A) or Three Bank (24V 10A / two 12V 10A) models to charge your entire boat or RV with one plug.

Yes. Our multi-bank chargers are designed for versatile setups. While the 24V bank is strictly for Lithium (LiFePO4), the 12V banks are built with a flexible algorithm that can safely charge Lead-Acid, AGM, or Lithium batteries simultaneously. This is ideal for boaters who use a 24V system for their trolling motor and a 12V system for their cranking or house batteries.

Lithium batteries require a specific charging profile (typically a constant current/constant voltage stages without a “desulfation” phase). Standard Lead-Acid chargers can damage lithium cells, and conversely, a dedicated 24V lithium profile may not provide the specific absorption/float voltages required to fully maintain a 24V Lead-Acid bank. To ensure the longest lifespan for your Thor Lithium batteries, the 24V output is precision-tuned for LiFePO4 chemistry.

Charging time is determined by the Amp-hour (Ah) capacity of your battery and the output of the charger. You can use this formula:

Charging Time (Hours) = Battery Capacity (Ah) ÷ Charger Amperage (A)

Example: If you are using our Single Bank 12 Amp charger on a 60Ah battery, it will take approximately 5 hours to charge from empty to full.

Yes. Thor Lithium batteries require a charger specifically compatible with LiFePO4 chemistry. Many modern marine onboard chargers include a lithium setting, but it is important to confirm compatibility before connecting. Using a charger designed for lead-acid or AGM batteries can affect performance and may void your warranty. Thor Lithium chargers are matched specifically to our battery chemistry and are the recommended charging solution for any Thor Lithium battery. If you’re unsure whether your existing charger is compatible, call us before you plug in.

Lithium batteries have an internal Battery Management System (BMS) that may “trip” or enter sleep mode if the voltage drops too low. Our chargers include a BMS Wake-up/Activation feature. If your battery isn’t being detected, ensure it is connected and the charger is powered; the charger will send a pulse to “wake up” the BMS and begin the normal charging cycle.

Yes. Our chargers feature an Intelligent PGC Algorithm designed for “plug and forget” maintenance. Once the batteries reach a full charge, the charger monitors the voltage and only tops them off when necessary. This prevents overcharging and ensures your batteries are healthy and ready for your next trip, even after months of storage.

Our on-board chargers are built for the rugged marine environment. They carry an IP68 waterproof rating, meaning they are fully dust-tight and protected against long-term immersion in water. You can safely mount them directly in your boat’s battery compartment or bilge area without worrying about moisture or spray.