Winter is brutal on RV batteries. Whether you camp year-round or store your RV, improper battery care can cut their lifespan in half.
How to Protect Your RV Batteries in January
1. Disconnect or Use a Proper Cutoff Switch
Parasitic draws (propane detectors, radios, circuit boards) drain batteries even in storage.
2. Charge Every 4–6 Weeks
Lead-acid batteries need consistent topping off to avoid sulfation.
3. Store in a Warm Place (If Removable)
Extreme cold drastically reduces capacity and damages plates.
4. Check Water Levels
For flooded batteries, low electrolyte exposes plates and weakens performance.
5. Inspect for Corrosion
White or green buildup on terminals signals trouble.
6. Wake-Up Procedure in Spring
Charge fully, load test, and inspect cables before reconnecting.
Not sure if your batteries will make it to spring?
MilTech RV provides battery testing, replacement, and winter storage guidance on-site.
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