Redway Battery (US)


Can I Leave My RV Plugged in All Winter?

Leaving your RV plugged in during the winter depends on several factors, and it’s important to consider the type of RV, the climate, and the condition of your batteries. Here are some considerations:

1. Battery Maintenance

  • Lead-Acid Batteries: If your RV has lead-acid batteries, leaving them plugged in is generally a good idea, especially if you have a battery maintenance mode or a smart charger that can maintain a proper charge without overcharging. Lead-acid batteries can self-discharge, and a maintained charge helps prevent them from freezing.
  • Lithium Batteries: If your RV has lithium batteries (LiFePO4), they have a lower self-discharge rate compared to lead-acid batteries. In some cases, lithium batteries can handle colder temperatures without as much risk of freezing. However, it’s essential to follow the manufacturer’s guidelines for storage and charging.

2. Climate

  • Cold Temperatures: In extremely cold climates, there’s a risk of lead-acid batteries freezing if they are not fully charged. Keeping them plugged in with a smart charger can help maintain an optimal charge and prevent freezing.
  • LiFePO4 Batteries: Lithium batteries are generally more tolerant of cold temperatures, but extreme cold can still affect their performance. Check the manufacturer’s recommendations for temperature ranges.

3. RV Systems

  • Parasitic Draws: Some RVs have parasitic draws from systems like propane detectors, clocks, or memory in electronics. If your RV has such draws, leaving it plugged in can help maintain the charge and ensure these systems continue to operate.
  • Energy Usage: If there are no significant parasitic draws, and you’re not using any systems that require a constant power source, leaving the RV plugged in might not be necessary. In such cases, you might consider periodic charging or using a battery disconnect switch to prevent any unwanted discharge.

4. Smart Chargers and Battery Monitors

  • Invest in Quality Equipment: If you plan to leave your RV plugged in, consider investing in a quality smart charger or a battery monitor. Smart chargers can adjust the charging rate based on the battery’s condition, and battery monitors provide real-time information on battery voltage and state of charge.

5. Regular Checks

  • Monitor Battery Levels: Regardless of whether you leave the RV plugged in or not, it’s a good practice to periodically check the battery levels and condition, especially if the RV is in storage for an extended period.


Always refer to your RV and battery manufacturer’s recommendations for the specific type of batteries and systems in your RV. Additionally, consider the local climate and the conditions your RV will be exposed to during the winter. If in doubt, seeking advice from a professional or your RV manufacturer can provide specific guidance based on your RV’s setup.

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