Keeping Solar Batteries Outside (The Dos and Don’ts)

The adoption of solar energy systems continues to surge across the United Kingdom, and with space at a premium for many homeowners, the question of where to store solar batteries often comes up.

In this article, we’re going to explain why you need solar batteries, whether or not you can keep them outside if you’re short on space, and answer some other common questions:

What Are Solar Batteries and Why Do I Need Them?

Solar batteries, also known as solar energy storage systems or solar battery storage, are devices that store excess electricity generated by solar panels (photovoltaic or PV panels).

They work in conjunction with a solar PV system to capture surplus energy produced during sunny days when the sun's power output is at its peak.

Instead of immediately sending this excess electricity to the grid or letting it go to waste, solar batteries store it for later use.

So, as you can understand, solar batteries are essential and they play an important role in saving you money on your energy bills - especially when it’s not sunny outside.

Should You Store Solar Batteries inside or Outside?

Whether you should store solar batteries inside or outside depends on several factors, including the type of battery, your local climate, available space, and safety considerations.

Here is a more detailed explanation of these key factors:

Battery Type

• The type of solar battery you have or plan to install can influence its storage location.
• Lithium-ion batteries, which are commonly used in solar energy storage systems, are generally better suited for indoor installation.
• They have a narrower temperature operating range compared to some other battery types and can be negatively affected by extreme heat or cold.

Local Climate

• Your local climate plays a significant role in determining the best storage location for solar batteries.
• If you live in an area with extreme temperature variations, installing batteries indoors is usually advisable.
• Batteries are sensitive to temperature, and extreme heat or cold can reduce their efficiency and lifespan.

Space Availability

• The amount of available space in your home can also influence the decision.
• If you have ample indoor space, storing batteries indoors's often more convenient and safer.
• However, if indoor space is limited, outdoor installation may be necessary, provided proper protective measures are taken.

Safety Considerations

• Safety is paramount when it comes to battery storage. Batteries, especially lithium-ion batteries, can pose fire and safety risks if damaged or exposed to extreme conditions.
• If you choose to install batteries indoors, ensure that they are placed in a well-ventilated area away from flammable materials.
• If you opt for outdoor installation, use weatherproof enclosures or dedicated battery storage cabinets to protect the batteries from the elements.

How Do You Store Solar Batteries for the Winter?

Storing solar batteries for the winter, especially in regions with cold temperatures and reduced sunlight, requires careful preparation to protect the batteries and ensure they maintain their performance.

We recommend talking with one of our solar technicians as we can discuss your options based on the type of batteries you have and where you want to store them.

Can Solar Batteries Be Installed Outside?

While some solar batteries can be installed outdoors, the feasibility depends on your battery type—with lithium-ion being more resilient than temperature-sensitive lead-acid—and requires careful attention to climate, local regulations, weatherproof shielding, and proper ventilation to ensure safety and longevity.

Key considerations

• Battery Choice: Lithium-ion is generally your best bet for outdoor durability.
• Protection: Even "outdoor-rated" batteries usually require a high-quality weatherproof enclosure.
• Airflow: Never compromise on ventilation, as heat is the primary enemy of battery lifespan.

Can Solar Batteries Go In the Garage?

Installing solar batteries in a garage is a practical choice that offers protection from the elements and easy accessibility, though it requires proper ventilation, fire-resistant precautions, and a battery type suited to the garage's temperature range to ensure safety and peak performance.

Quick Garage Checklist

• Space: Ensure there is a 3-foot clearance around the unit for airflow and maintenance access.
• Safety: Check if your local building codes require a heat detector or specific fire-rated drywall behind the mounting area.
• Temperature: If your garage isn't insulated, make sure your chosen battery (like LiFePO4) can handle the local winter lows and summer highs.

Are you ready to take control of your energy by generating free electricity during the day and storing it for use during peak hours? Check out our our battery prices, call our team on 01453 705915 or contact us via this page today for a free consultation!