Solar panel batteries are becoming an increasingly popular addition to home solar installations, allowing you to store excess electricity generated during the day and use it when your panels are producing less power. However, if you are considering adding battery storage to your property, you may be wondering “are solar panel batteries safe?”
So are solar batteries safe for your home?
When a solar battery is correctly selected, installed and maintained, it can be used safely in a domestic property. Modern battery systems incorporate controls designed to monitor performance and help protect against operating conditions that could cause damage.
Many domestic solar batteries use lithium-ion technology. These batteries are widely used for energy storage, but faults, physical damage or unsuitable installation can create risks, including overheating and fire.
This does not mean you need to avoid battery storage. Instead, it highlights the importance of choosing a suitable product and having it installed by a competent professional.
What safety features do solar batteries have?
Many modern solar battery systems include a battery management system (BMS). This monitors aspects of the battery’s operation and helps keep it within the manufacturer’s specified limits. Depending on the system, safety features may include:
- Temperature monitoring: Helps identify when the battery is operating outside its permitted temperature range.
- Electrical protection: Helps manage charging and discharging and protect against certain electrical faults.
- Overcharge protection: Helps prevent the battery from being charged beyond its designed limits.
- Fault monitoring: Can identify certain problems and trigger warnings or shut-down procedures.
The exact features vary between models, so it is worth checking the manufacturer’s specifications before choosing a battery.
Can solar batteries catch fire?
Although solar battery fires are not an everyday occurrence, they are a risk that should be taken seriously. Some battery faults can lead to a process known as thermal runaway, where heat generated inside a battery causes further heating and potentially a rapidly developing fire. Certain battery failures can also release hazardous gases.
The risk can be reduced through appropriate product selection, correct installation, suitable positioning and following the manufacturer’s operating instructions.
You should never attempt to open, repair or modify a battery yourself. If you notice signs of damage or abnormal operation, contact your installer or the manufacturer for advice.
Where should a solar battery be installed?
The location of your battery is an important part of keeping your system safe. Depending on the battery model and the manufacturer’s requirements, a suitable location may be inside a garage, in a utility area or outdoors. Not every solar battery is designed for every environment, so the installation location must be appropriate for the specific product. Your installer should consider:
- The manufacturer’s temperature and ventilation requirements
- Protection from moisture and physical damage
- Suitable access for inspection and maintenance
- Clearance from heat sources and combustible materials
- Safe access and escape routes in an emergency
How can you maintain solar battery safety?
Solar batteries generally require limited routine maintenance, but you should still monitor your system and follow the manufacturer’s guidance. To help keep your battery operating safely:
- Arrange installation by a suitably qualified and competent professional.
- Use the battery only with compatible equipment.
- Keep the area around it clear and follow the manufacturer’s clearance requirements.
- Check for system warnings and arrange professional investigation if faults appear.
- Do not open, alter or attempt to repair the battery yourself.
- Follow the manufacturer’s instructions for inspections and servicing.
If your battery becomes unusually hot, swells, leaks or produces an unusual smell or noise, stop using it if you can do so safely and seek professional advice. Do not touch or move a damaged battery. If it is smoking, burning or releasing fumes, leave the area, keep others away and call 999.
Should you add battery storage to your solar panels?
Safety is one consideration when deciding whether to install a solar battery. You should also consider how much electricity you use, how much surplus energy your panels generate and whether the potential savings justify the additional cost.
A professional installer can help you compare compatible systems, explain their safety features and identify a suitable installation location.
For more information or advice, why not contact the experts today, here at the Eco Renewables Group? We work across the UK, from Oxford to Derby, to deliver high quality solar power solutions.
