Power Bank & Phone Charging Fire Safety at Home (Malaysia)

Quick answer: most phone and power bank fires start while the battery is charging, especially when it's on a bed, sofa or carpet, left plugged in overnight, or already damaged or swollen. Charge on a hard surface, stay nearby, unplug once it's full, and stop using any battery that has puffed up. If one does catch fire, get everyone away from it and call 999. A normal home extinguisher isn't designed for lithium battery fires.

Why Charging Is When It Happens

Phones, power banks, laptops, vapes, e-scooters and e-bikes all run on lithium-ion batteries. They're safe in normal use, but charging adds heat and electrical stress. If a cell is damaged, poorly made or already overheating, that's when it can tip into thermal runaway. That's a chain reaction where one failing cell heats the next, and it can reach temperatures above 1,000°C. Once it starts, it feeds itself, which is why these fires behave so differently from an ordinary one. Our guide to lithium-ion vs regular fires explains the chemistry.

It happens closer to home than most people think. In one case reported by MS News in 2025, a Malaysian woman was charging her power bank on the carpet next to her printer. About 15 minutes later it exploded beside her arm. The fire destroyed the printer, blackened the walls with smoke and left her with burns.

8 Charging Habits That Cause Fires

1. Charging on a bed, sofa, pillow or carpet

Soft surfaces trap heat around the battery and catch fire easily if it fails. Charge on a hard, non-flammable surface like a table or tiled floor, with nothing piled on top.

2. Charging overnight or while you're out

A battery that fails at 3am, or while nobody's home, has nobody to notice it. Charge while you're awake and nearby, and unplug once it's full.

3. Using a damaged or swollen battery

A phone that no longer sits flat, a power bank with a bulging case, or a battery that gets unusually hot are all warning signs. Stop using and charging it straight away. Here's why batteries swell and what to do about it.

4. Cheap, unbranded chargers and cables

Use the charger that came with the device, or a good-quality one from a reputable brand. A very cheap power bank or charger is where corners usually get cut on the protection circuits that stop a battery overcharging.

5. Charging something that's already hot

Don't charge a phone straight after heavy gaming or GPS use, and don't charge a power bank that's been sitting in a hot car. Let it cool down first.

6. Leaving power banks in the car

A parked car in the Malaysian sun gets very hot inside. Don't store power banks, vapes or spare batteries on the dashboard or in the glovebox.

7. Overloaded multi-plugs

Several chargers on one adaptor, plugged into an extension cord, adds an electrical fire risk on top of the battery risk. Electrical faults are already the leading cause of Malaysian house fires. See why electrical faults cause most Malaysian house fires.

8. Charging e-scooters and e-bikes in the wrong place

These batteries are much bigger, so a fire is far bigger too. Don't charge them in a bedroom, or anywhere they block the front door or the corridor you'd escape through. Charge them in an open, ventilated spot while someone's home.

What to Do If a Phone or Power Bank Catches Fire

• Don't pick it up. A battery in thermal runaway can flare, spit burning material or explode.
• Get everyone out of the room if you hear hissing or popping, see smoke, or it's already burning. Lithium battery smoke is toxic.
• Call 999.
• If you have a lithium battery fire blanket and it's safe to reach, cover the device fully and leave the blanket in place.
• Expect it to reignite. Lithium fires can restart hours later, so let Bomba deal with moving the device and don't bring it back inside.

Why not just use your extinguisher? A standard home extinguisher is designed for ordinary fires, and the battery's casing often stops the agent reaching the cells, so it can't stop the reaction inside. It still has a job: putting out anything nearby that has caught fire, like curtains or furniture. Make sure you know how to use one properly.

The Right Equipment for a Home That Charges a Lot

• Lithium Battery Fire Blanket (RM400, 4ft x 4ft): designed specifically for lithium battery fires, to smother flames and contain thermal runaway. It's worth having if your household charges e-scooters, e-bikes or several devices in one spot. A standard kitchen blanket can burn through on a battery fire; see what a fire blanket is and when to use one.
• FF Smoke Detector PLUS (RM79): put one in every bedroom where phones charge overnight. It runs on a sealed 10-year battery, and interconnected units all sound together if one detects smoke.

For the rest of your home's setup, start with the complete home fire safety guide.

Frequently Asked Questions

Is it safe to charge my phone overnight?

Most modern phones stop charging when full, but a faulty or damaged battery can still fail while you're asleep and nobody notices. The safer habit is to charge while you're awake and nearby, on a hard surface, and unplug once it's full.

Why do power banks explode?

Usually because a cell inside is damaged, poorly made or overheating. Charging adds heat, which can trigger thermal runaway, a self-feeding chain reaction that can exceed 1,000°C.

Can I use a normal fire extinguisher on a power bank fire?

A standard home extinguisher isn't designed for lithium battery fires and can't stop the reaction inside the cells. Get everyone away, call 999, and use a lithium battery fire blanket if you have one and can reach it safely.

What should I do with a swollen power bank?

Stop using and charging it immediately, keep it away from anything flammable, and take it to an e-waste collection point. Don't throw it in normal rubbish or try to press it flat.

Where should I charge an e-scooter at home?

In an open, ventilated spot away from bedrooms and escape routes, while someone is home, and never blocking the front door.

Fire Fighter Industry is Malaysia's No. 1 Fire Safety Company, established in 1974. See the Lithium Battery Fire Blanket or browse our home fire safety bundles.