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A swelling battery is not just a performance problem — it is a safety hazard. If your phone's back cover is lifting, the screen is separating from the frame, or the body of the device no longer lies flat, the battery inside is producing gas and expanding. This situation requires immediate action.
Why Batteries Swell
Lithium-ion batteries swell when internal chemical reactions produce gas — typically caused by age and cycle degradation, overcharging with a faulty charger, exposure to high heat, physical damage from a drop, or a manufacturing defect. Once swelling begins, it does not reverse on its own and will continue to worsen.
What to Do Immediately
Stop using the phone for charging. Continuing to charge a swollen battery accelerates the swelling and increases the risk of rupture or fire.
Do not puncture, compress, or place pressure on the battery. A punctured lithium-ion battery can ignite. Do not attempt to remove a swollen battery yourself unless you have specific training — the gas-filled pouch can tear during extraction.
Keep the phone away from flammable materials. Store it on a hard, non-flammable surface — not in a bag, drawer, or on a bed — until it can be assessed by a technician.
Do not place a swollen phone in direct sunlight or in a hot car. Heat accelerates the chemical reaction and significantly raises the risk of thermal runaway.
Getting It Repaired
Take the phone to a qualified repair technician as soon as possible. Battery replacement is the correct fix. Technicians have the tools to safely remove a swollen cell without rupturing it. Disposal of the old battery must also be handled properly — lithium batteries should not go into household rubbish and most repair shops will dispose of them responsibly.
A swollen battery is one phone fault that genuinely cannot wait. Treat it as urgent, stop charging the device, and get it to a technician before the situation escalates.
