Swollen Power Bank: A Sign of Danger and What You Should Do

A swollen power bank might appear harmless, but it's a warning sign of serious battery problems that can be dangerous. If you've noticed your power bank expanding, it's crucial to understand why and how to address the situation immediately.

Why Does a Power Bank Swell?

Swelling in a power bank is caused by the buildup of gas inside the battery. This gas is a byproduct of internal chemical reactions, and it can be exacerbated by various factors, including:

• Overcharging: Leaving your power bank plugged in for extended periods, even after it's fully charged, can lead to overheating. This excessive heat intensifies chemical reactions within the battery, generating gas and causing swelling.
• High Temperatures: Exposure to direct sunlight or extremely hot environments can accelerate the chemical processes inside the battery. This leads to increased gas production, contributing to swelling. Avoid using or storing your power bank in hot places.
• Physical Damage: A cracked or dented power bank casing can compromise the integrity of the battery. This allows the gas produced by internal reactions to escape, leading to swelling. Inspect your power bank for damage after any drops or impacts.
• Manufacturing Defects: In some cases, power banks might have manufacturing defects that cause swelling. This could be due to poor sealing of the battery or inadequate ventilation, which prevents proper pressure regulation within the battery.
• Low Quality: Inexpensive power banks made with low-quality materials are more prone to gas buildup and swelling. Choose power banks from reputable brands with safety certifications.

The Risks of a Swollen Power Bank

A swollen power bank poses several risks, including:

• Gas Leakage: A swollen power bank can leak corrosive or toxic gases. This is especially dangerous in enclosed spaces and can damage nearby materials.
• Explosion/Fire Risk: A severely swollen power bank can rupture or even explode, posing a risk of fire and potential injury. The risk of explosion increases significantly due to the instability of the swollen power bank.
• Reduced Capacity: A swollen power bank typically loses its ability to hold a charge effectively, rendering it useless for powering devices.

What to Do If Your Power Bank is Swollen

If you discover your power bank is swollen, immediate action is essential:

1. Stop using it immediately.
2. Dispose of it properly. Contact your local waste management facility for guidance on safe disposal of lithium-ion batteries.
3. Replace it with a new power bank from a trusted brand.

Remember, prioritizing safety is paramount. Never disregard a swollen power bank. Take swift action to prevent potential hazards.