Lithium Battery Fire Safety Tips for Your Home

Lithium-ion batteries are everywhere — in your phone, your laptop, your kid's e-bike, and even your vape. Most of the time, they work perfectly. But when something goes wrong, it can happen fast. Fires from lithium batteries burn intensely hot, release toxic fumes, and can reignite hours after you think the danger has passed.

At Rural Metro Fire, we respond to these incidents across unincorporated Maricopa and Pinal Counties. Here's what you need to know to keep your family safe — before we ever get the call.

Buy Smart: Start With a Certified Product

Not all batteries and chargers are created equal. Before you buy, look for a safety certification mark from a nationally recognized testing lab — UL and ETL are the most common.

Avoid cheap, uncertified batteries or chargers sold online. Even if they fit your device, they often skip the safety standards that prevent overheating and failure. Spending a few extra dollars upfront can prevent a house fire.

Charge Safely — Especially in Arizona's Heat

How and where you charge matters just as much as what you charge with.

• Use only the original charger and cord that came with your device. Third-party chargers can deliver the wrong voltage and stress the battery.
• Charge on a hard, non-flammable surface — like tile, stone, or glass — in an open area. Never charge on a bed, couch, or anywhere near a door or exit.
• Don't charge overnight or while sleeping. Unplug when the device is full.
• Watch the heat. Central Arizona summers are brutal. Avoid charging in direct sun, hot cars, or garages that exceed 100°F. High temperatures accelerate battery wear and failure.
• For e-bikes and scooters: Charge outside or in a well-ventilated space — not inside your living area or near escape routes.

Store, Handle, and Watch for Warning Signs

Treat batteries with the same care you'd give any hazardous item in your home.

Keep devices away from flammable materials. Inspect batteries regularly for swelling, leaking, discoloration, unusual heat, strange odors, or odd noises. If you notice any of these warning signs, stop using the device immediately. If it's safe to do so, move it outside away from your home — and call 911.

Never puncture, crush, modify, or expose batteries to water.

If a Fire Starts

Act immediately:

1. Get out. Close the door behind you to slow the spread.
2. Call 911.
3. For very small, contained fires, a Class ABC fire extinguisher can help — use the P.A.S.S. method: Pull the pin, Aim at the base of the fire, Squeeze the handles, Sweep side to side.
4. Keep watching. Even after flames appear to be out, lithium batteries can reignite. Don't assume it's over.

Dispose of Batteries the Right Way

Never throw lithium batteries in the trash. Old or damaged batteries can ignite at landfills and recycling centers. Instead, drop them off at an authorized battery recycling location in your area.

Make Battery Safety a Family Habit

Simple habits save lives. Teach kids not to play with chargers or devices. Test your smoke alarms monthly and make sure you have a working Class ABC fire extinguisher in your home — and that everyone knows how to use it.

At Rural Metro Fire, we're proud to protect Central Arizona families since 1948. We train regularly for lithium battery incidents — but we'd always rather help you prevent one.

Have questions about fire safety or membership? Visit RMFcentral.org or call us at 480.627.6200. Stay safe. Charge smart.