Power banks are essential for keeping our devices charged on the go—but they can pose serious risks if they start to swell. A bulging power bank isn’t just a cosmetic issue—it’s a clear warning sign of potential battery failure, which could lead to leaks, fires, or even explosions if not handled properly.
In this guide, we’ll break down the causes of swelling, how to prevent it, and what to do if your power bank begins to expand.
🔋 Why Do Power Banks Swell?
A swollen power bank is a sign of battery failure, usually caused by:
✔ Overcharging – Keeping it plugged in too long stresses the battery.
✔ Heat Exposure – High temperatures cause gas buildup inside lithium-ion cells.
✔ Physical Damage – Drops or impacts can damage internal components.
✔ Old Age – Batteries degrade over time, increasing the risk of swelling.
🛡️ How to Prevent Power Bank Swelling?
✅ Unplug when fully charged – Avoid leaving it connected overnight.
✅ Store in a cool, dry place – Keep it away from direct sunlight and hot environments.
✅ Use quality power banks – Cheap, uncertified batteries are more prone to failure.
✅ Replace old units – If your power bank is over 2-3 years old, consider upgrading.
⚠️ What to Do If Your Power Bank Starts Swelling?
🚨 Stop using it immediately – Disconnect from any devices or power sources.
🚨 Don’t puncture or compress it – This can cause leaks or combustion.
🚨 Store safely – Place it in a fireproof container like a metal box or sand bucket, away from flammable materials.
🚨 Dispose properly – Take it to a certified e-waste recycling center or battery disposal program.
Never ignore a swollen power bank.
Prioritize your safety and handle it with care.
