Battery Safes for Lithium-Ion Storage & Fire Protection

You can safely store lithium-ion batteries indoors if the right safety precautions are taken. 

As one of the most significant risks posed by lithium-ion batteries is fire or explosion, then it is recommended that they are stored in a cool, dry and well-ventilated area, ideally within a fire-rated battery storage safe. 

For businesses that hold larger quantities of batteries, it is strongly advised to use dedicated lithium-ion storage units.

Even though there isn’t currently a single piece of legislation dedicated to lithium-ion battery storage, there are several UK health and safety regulations that apply. 

Businesses are expected to carry out risk assessments, store batteries in fire-resistant enclosures, maintain clear segregation and ensure staff are correctly trained. 

Using fire-rated battery safes and cabinets helps demonstrate compliance and provides a practical way to meet insurer and HSE expectations.

This is an option if you select a battery safe specifically design for charging applications. 

Thornhill supply specialist battery safes with integrated ventilation and charging ports, designed to safely manage the heat and gases that may occur during charging. 

Battery storage safes are typically fire-tested to industrial standards to contain heat, flames, and smoke in the event of a battery failure.

Depending on the model, Thornhill’s range includes safes with:

• 30 to 90 minutes of fire protection,
• Fire insulation and heat-resistant seals, and
• Internal compartments that prevent fire spread between batteries.

Fire ratings are verified under EN 14470-1 or equivalent fire safety standards, giving you confidence that the safe has been independently tested for lithium-ion applications.

If you’re unsure which rating you need, our team can recommend the most appropriate model for your environment and risk level.

Choosing the right battery safe depends on what type of batteries you store, how many and whether you charge them. Consider:

• Capacity – number and size of batteries (e.g. small tool packs vs e-bike batteries).
• Fire rating – how long the safe needs to contain a fire (30, 60, or 90 minutes).
• Ventilation and charging – whether you need a passive storage safe or a model with charging capability.
• Location and installation – ensure the safe fits the space and can be anchored securely.

If in doubt, speak to the Thornhill team for tailored advice — we’ll help you find the right fire-rated lithium-ion battery storage safe for your specific workplace or application.