Battery storage is a buzzword on everyone's lips lately, but a burning question remains: how safe are these systems, really? With the push for renewable energy and storing electricity from solar or wind, battery banks are popping up in homes and commercial properties across the nation. But reports of battery fires have also been increasing, sparking fear (and fires!) over the safety of this new technology.
The fact is, like any emerging tech, there are bound to be some growing pains. But overall, battery storage can be very safe when systems are properly installed, maintained, and used with a little common sense. Let's look at the facts around battery hazards to separate fact from fiction-and let you decide if the benefits outweigh the risks for your situation.
Battery Fire Risks: Overblown or Legitimate Threat?
We've all seen those viral videos of lithium-ion battery fires spreading like wildfire. While battery blazes certainly can happen, the good news is that they're relatively rare occurrences. And when they do occur, it's most often due to:
Manufacturing defects
Damage during shipping/installation
Overcharging
External heat sources
"Most of the battery storage systems on the market today are designed with multiple fail-safes and safety mechanisms," explains battery expert Jane Robertson. "However, no technology is 100% risk-free. Proper maintenance and not overworking the batteries is key."
Are Some Batteries Safer Than Others?
Not all batteries are created equal when it comes to safety. Here's a quick guide to the most common battery types and their associated risks
Lead-Acid Batteries
Used in: Golf carts, UPS battery backups, older technology
Fire Risks: Very low risk when ventilated properly
Other Risks: Contain lead which is toxic to environment; relatively short lifespan
Lithium-Ion Batteries
Used in: Most modern electronics; Tesla Powerwall and other residential storage
Fire Risks: Moderate risk, can overheat if defective or misused
Other Risks: None from everyday use and proper disposal
Saltwater Batteries
Used in: Some grid storage systems
Fire Risks: Extremely low risk
Other Risks: Relatively new tech; aqueous hydrogen gas can be explosive
As you can see, each chemistry has its own unique advantages and disadvantages when it comes to safety. Doing your research on the specific batteries used in your system is highly advised.
Top Battery Storage Safety Tips
Whether you already have batteries installed or are considering making the leap, these tips can help maximize safety:
1. Use certified installers/technicians that follow code
2. Ensure proper ventilation around the battery bank
3. Don't overcharge or drain batteries completely
4. Inspect regularly for damage, leaks, or swelling
5. Replace aged or degraded batteries promptly
6. Follow disposal guidelines for old units
"Batteries are an incredible tool for storing renewable power, but they demand respect," says Gary Reynolds from SafeWatt Solar. "Take the same precautions you would with any electrical equipment, and the risks are very minimal."
What If a Battery Fire Starts?
Battery fires can be intense and difficult to extinguish with conventional methods. Here's what to do:
1. Evacuate immediately and call the fire department. Don't try to fight an lithium-ion battery fire yourself.
2. Use a specific battery fire safety product like Lith-Ex or Foam Spray if you have it and feel comfortable doing so.
3.Let it burn out if it's contained. Move away and let trained professionals handle it from there.
The rarity of battery fires and the response resources available mean that this risk shouldn't be too concerning for most homeowners and businesses. After all, we take precautions against all sorts of fire risks already-this is just one more to be aware of.