Workshop & storage: where to store backup batteries?
Hello, Kyl here. Store your backup batteries in a dry, temperate, well-ventilated place, away from walkways and flammable materials. First check their chemistry and condition: lead and lithium batteries pose different risks. Do not store a damaged lithium battery or one whose condition is unknown with batteries in good condition. A suitable location makes workshop storage easier and improves day-to-day safety.
What to do now:
- Check the technology indicated on each battery: lithium-ion, lead-acid, or other.
- Set aside any battery that is swollen, cracked, leaking, or abnormally hot.
- Choose a dry, temperate, well-ventilated location away from heat sources.
- Protect the terminals against short circuits and keep batteries out of reach of children.
- Check the manufacturer’s instructions for charging and long-term storage.
To identify the battery type and choose a location, consult this practical guide to battery technologies and these tips for storing tool batteries.
Where should you store backup batteries in a workshop?
Set aside a dedicated area that is stable and easy to inspect. A sturdy cabinet or a suitable storage cabinet can limit impacts and prevent contact with metal objects. However, it does not replace the manufacturer’s instructions or specialized safety equipment when the quantity or level of risk calls for it.
Avoid direct sunlight, radiators, damp areas, and emergency exits. The recommended storage temperature varies by model: check the manual rather than looking for a single value. For long-term storage, the recommended battery charge level also depends on the technology and the manufacturer’s instructions.
In a small workshop, a cluttered workbench can quickly become an improvised drop-off area. A battery left near a space heater is a reminder that a dedicated space is not a luxury: it makes checks easier and reduces avoidable risks.
Adapt storage to the technology
Lead-acid batteries can leak and release hazardous substances. Place them upright on a stable, sturdy surface, and protect the area against spills. Some batteries may also release gases: follow the manufacturer’s ventilation instructions.
Lithium-ion batteries pose a different risk. If damaged or faulty, thermal runaway can cause a fire that is difficult to control and, in some situations, an explosion. Fire prevention therefore involves regular inspections, keeping batteries away from combustible materials, and excluding suspect batteries from regular storage.
| Type or condition | Recommended storage | Point to watch |
|---|---|---|
| Lead-acid battery in good condition | Upright, on a stable surface, in a suitable ventilated area | Acid leaks and possible gas release |
| Lithium battery in good condition | Dry, temperate area, away from flammable materials | Follow the manufacturer’s charging and storage instructions |
| Damaged battery or one in unknown condition | Isolate it from serviceable batteries and combustible materials; do not charge it | Ask the manufacturer or a specialist disposal service for advice |
“A stored battery is not a forgotten battery.” Note the date of inspection and check its condition regularly, without handling it if it shows any signs of a problem.
How can you organize the workshop to reduce risks?
Good workshop organization makes the rules visible and easy to follow. Clearly mark the storage area, avoid piling tools or boxes there, and keep emergency equipment and alert systems accessible in accordance with the site’s safety instructions.
If it is a battery in good condition that is used every week, store it in the designated area and follow the manual. If it is swollen, leaking, hot, or in unknown condition, do not charge it or mix it with serviceable batteries.
For battery safety, a simple procedure prevents improvised decisions. It also helps anyone using the workshop quickly spot a problem.
Store batteries in 3 steps
- Step 1: Identify the chemistry and condition of each battery. Set aside any damaged or suspect unit without recharging it.
- Step 2: Prepare a clean, dry, well-ventilated location that meets the manufacturer’s instructions. Protect the terminals and separate technologies if necessary.
- Step 3: Record the date and condition when storing the battery, then schedule regular checks. Also check the charge level before any extended storage period.
To complement these steps, this INRS video presents prevention guidance related to lithium-ion battery storage.
Frequently asked questions about battery storage
Can backup batteries be stored in a garage?
Yes, if the location remains dry, temperate, well-ventilated, and away from heat sources, walkways, and flammable materials. Check the conditions specific to the model in the manual.
What charge level should a lithium-ion battery be kept at?
The recommended level depends on the model and the storage period. Consult the manufacturer and avoid leaving the battery fully charged or completely discharged for a long time if the manual advises against it.
What should you do with a swollen or leaking battery?
Do not charge it and avoid handling it unnecessarily. Keep it away from batteries in good condition and flammable materials, then ask the manufacturer or a specialist disposal service for handling instructions.
Do all batteries need to be stored in a special cabinet?
Not necessarily: the choice depends on the technology, the condition of the batteries, the quantities, and the rules that apply at the location. For large-scale or professional storage, have the need for dedicated equipment assessed.
Thank you for your interest; Kyl
