Car Battery Storage Guide
Protect battery life when storing your vehicle or spare battery
When to Store a Battery
- Storing your vehicle for 30 days or more
- Keeping a backup battery on hand
- During seasonal changes (e.g. storing boats, RVs, or powersports vehicles)
How to Store a Battery Properly
1. Charge Before Storage:
Fully charge the battery. A discharged battery can freeze or sulfate.
2. Store in a Cool, Dry Place:
Keep it below 80°F. Avoid direct sunlight and high humidity.
3. Disconnect the Battery:
If stored in the vehicle, disconnect the negative terminal to prevent parasitic drain.
4. Use a Battery Maintainer:
Keeps the battery safely charged without overcharging.
Storage Tips by Battery Type
| Battery Type | Can Be Stored Indoors | Maintenance Needed |
|---|---|---|
| AGM | Yes (sealed design) | Low |
| Standard Flooded | Yes - Check for leaks! | Check water levels |
Warning Signs After Storage
- Swollen case
- Low voltage (below 12.4V)
- Corrosion on terminals
- Cracks or leaks
If you notice any of these, it may be time to replace the battery.
Clarios creates the most advanced battery technologies for virtually every type of vehicle. We are a global leader in energy storage solutions, powering one in three of the world’s vehicles. We partner with our customers to develop smarter solutions that make people’s lives better.