How to Store Lithium Batteries Safely at Home

Lithium batteries power phones, tools, toys, laptops, e-bikes, and many other devices. Proper storage helps reduce the risk of short circuits, overheating, fires, and damage that can make a battery unsafe to use. The right method depends on the battery type and product: small consumer cells and large rechargeable packs do not all have identical requirements.

Before you begin, identify the battery and read the device or battery manufacturer’s storage guidance. If a battery is swollen, leaking, unusually hot, damaged, or subject to a safety recall, do not treat it as an ordinary battery to put away. See the troubleshooting section for next steps.

What You’ll Need

The battery or device manufacturer’s instructions
A cool, dry storage area away from direct sun and heat sources
Original packaging, a suitable battery case, or nonconductive covers for exposed terminals
A stable shelf or cabinet that is out of reach of children and pets
For larger packs, such as e-bike or tool batteries, the approved charger and any storage accessories specified by the maker

Step-by-Step

Identify the battery type. Check its label and the product manual. A removable lithium-ion pack, a coin cell, and a non-rechargeable lithium metal battery have different handling and storage directions. Do not guess a battery’s chemistry, charging limits, or storage charge level from its appearance.
Inspect it before putting it away. Look for cracks, dents, punctures, corrosion, leakage, swelling, a loose casing, or signs of overheating. Check for a recall using the manufacturer’s information if you have reason to suspect one. Do not store or charge a damaged, leaking, swollen, or recalled battery as if it were in normal condition.
Choose a cool, dry location. Use an indoor place with stable conditions, away from radiators, stoves, hot vehicles, direct sunlight, and other heat sources. Avoid damp areas where condensation or water can reach the battery. Do not put batteries in a freezer or refrigerator unless the manufacturer explicitly directs it; condensation and unsuitable temperatures can cause problems.
Protect the terminals. Keep batteries in their original retail packaging when practical. Otherwise, place each loose battery in a dedicated case or cover exposed terminals with nonconductive material as the manufacturer recommends. Never leave loose batteries together with keys, coins, screws, tools, or other metal objects; contact between terminals can cause a short circuit and rapid heating.
Store batteries securely and separately. Put them on a stable surface, not where they can fall, be crushed, or be punctured. Keep batteries away from flammable clutter and out of children’s and pets’ reach. Do not pile heavy items on packs or store loose cells in a drawer where they can touch one another or metal objects.
Set rechargeable batteries to the maker’s storage condition. Some products specify a particular charge level for long-term storage; others give different instructions. Follow the exact manual rather than assuming a universal percentage. Do not leave a battery continuously connected to a charger unless the manufacturer says that is appropriate.
Prepare large packs as instructed. For e-bike, scooter, power-tool, or other substantial battery packs, use only the maker-approved charger and storage method. Disconnect the pack from equipment if the manual directs it, and do not modify, open, or improvise a container for it. Keep the pack away from exits and places where a fire could block escape, while following local fire-safety guidance.
Check stored batteries periodically. Follow the manual for inspection and any recharge interval; there is no single schedule that applies to every chemistry and product. If you notice swelling, leakage, odor, heat, or damage, stop handling it unnecessarily and use the steps under Troubleshooting.
Dispose of unwanted batteries properly. Do not put lithium batteries in household trash or curbside recycling unless local guidance specifically permits it. Prevent terminal contact during transport and use an approved battery-recycling or hazardous-waste collection option. For a damaged battery, contact the local waste authority or fire department for handling instructions before moving it.

Common Mistakes

Storing loose cells together: A metal object or another battery can bridge the terminals and cause a short. Keep each battery protected and separated.
Leaving batteries in a hot car or near heat: High temperatures can accelerate damage and raise fire risk. Choose a stable indoor location instead.
Assuming all lithium batteries store alike: Rechargeable lithium-ion packs and non-rechargeable lithium batteries have different instructions. Use the product-specific guidance.
Putting a questionable battery back into service: Swelling, leakage, punctures, unusual heat, or a recall are warning signs, not cosmetic issues. Don’t charge or use it.
Using a homemade charging or storage setup: Do not bypass protections, alter the pack, or use an incompatible charger. Follow the maker’s directions.
Throwing batteries in the trash: Lithium batteries can be damaged in waste handling and start fires. Check local collection instructions.

Tips

Keep the manual or a photo of the battery label so you can check the exact model’s storage instructions later.
Store batteries in a place where you can notice damage or unusual odors, rather than burying them under clutter.
For devices with built-in batteries, follow the device maker’s advice for long periods without use; do not attempt to remove a battery that is not designed to be user-removable.
Keep the correct charger with its intended device or pack, and label chargers if similar-looking models are easy to confuse.
When transporting loose batteries, protect terminals and follow carrier rules. Damaged batteries may have special restrictions.

Troubleshooting

The battery is swollen, hot, leaking, or giving off an unusual smell: Do not charge, use, puncture, squeeze, or put it into a regular storage box. If it is safe to do so, keep people away and avoid touching it; if it is smoking, making noise, or actively heating, leave the area and call emergency services. For a battery that is damaged but not actively burning, contact the manufacturer, local fire department, or hazardous-waste authority for specific handling and collection instructions.

The battery was stored in a hot or wet place: Do not charge it immediately or assume it is safe because it looks normal. Consult the maker’s guidance. If it is wet, corroded, or showing damage, stop using it and seek disposal instructions.

You cannot identify the battery or its condition: Do not experiment with chargers or storage levels. Find the device manual or contact the manufacturer using the model information. If damage is suspected, treat it as potentially unsafe and ask the local waste authority how to handle it.

A battery recall may apply: Check the manufacturer’s recall notice and follow its instructions. Do not use, charge, ship, or discard the battery contrary to the recall directions.

Frequently Asked Questions

Should lithium batteries be stored fully charged?

There is no single charge level that is right for every battery. Follow the specific product manual, especially for long-term storage of rechargeable packs.

Can I store lithium batteries in the refrigerator?

Usually, a refrigerator is not the recommended default because moisture and condensation can be harmful. Use a cool, dry place and refrigerate only if the manufacturer explicitly instructs you to.

Is it safe to leave batteries in a device?

It depends on the device and its manual. For long periods of nonuse, follow the maker’s directions; remove only batteries designed to be user-removable.

Can I store batteries in a plastic bag?

A bag alone may not protect terminals from pressure, punctures, or contact with other batteries. Original packaging or a purpose-made battery case is a better choice; keep cells separated and follow manufacturer instructions.

How should I store a swollen lithium battery?

Do not store, charge, or use it as a normal battery. Keep away from it and contact the manufacturer or local fire or hazardous-waste authority for safe handling instructions; call emergency services if it is smoking or heating.

Can lithium batteries go in household recycling?

Do not put them in household trash or curbside recycling unless local instructions specifically allow it. Use a designated battery collection or hazardous-waste program, and ask how to handle damaged batteries.

Further reading: U.S. Consumer Product Safety Commission. Details can change, so check the official page for anything that matters to you. Spotted a mistake? Tell us. How we write an answer.