Why won’t my lithium battery charge in freezing cold temperatures while winter camping?

Please take a moment to watch the video below for step-by-step guidance, or follow the step-by-step written directions.

If you need additional help, our After Sales team at Escape Trailer will be happy to assist you. You can submit a support ticket using this form. 

1. Know the temperature limit

• Lithium batteries should not be charged below 32°F (0°C).
• Charging them while frozen can permanently damage them.

2. Understand what your battery will do

• Your battery has a Battery Management System (BMS).

• When it’s too cold, the BMS will automatically stop charging to protect the battery.

3. Recognize the signs

• Your solar panels may still produce power.
• But your battery won’t accept the charge.
• Your charge controller may show energy with “nowhere to go.”

4. Keep using power normally

• You can still run devices like:
  • Lights
  • Fridge
  • Electronics
• Discharging (using power) is fine- even in the cold.

5. Expect battery drain

• Since charging is blocked, your battery will slowly drain as you use it.
• It won’t recharge until it warms up.

6. Prevent the problem (best solutions)

• Option A: Keep batteries warm

  • Store batteries in a heated space if possible.
  • Some RVs/trailers route furnace heat to the battery area.

• Option B: Use battery heaters

  • Install battery heating pads or blankets.
  • These use a small amount of power to keep batteries warm enough to charge.

• Option C: Plan ahead

  • On freezing days, assume solar charging may not work until temperatures rise.
  • Budget your power usage accordingly.

7. Know your alternatives

• AGM batteries can charge in cold weather without this restriction.
• Lithium batteries require more planning in freezing conditions.
  
  

Bottom line

• Keep lithium batteries warm OR
• Accept that charging will stop when it’s freezing