MacBook Swollen Battery: Trackpad Won't Click or Case Bulging
MacBook Air / MacBook Pro • Swollen battery, trackpad stiff, case bulging
Quick Answer
When a MacBook trackpad gets stiff or stops clicking and the bottom case starts to bulge or rock on a flat table, a swollen battery is the most likely cause. The battery sits directly under the trackpad and pushes it up as it expands. Stop charging it, shut it down, and have the battery replaced.
Possible Causes
Aged battery producing gas
CommonAs lithium-ion cells age, they can release gas and swell. This is the most common reason a trackpad suddenly feels stiff.
Heat and constant charging
CommonA MacBook that lives plugged in at high temperature is more likely to develop a swollen battery.
Damaged or faulty cell
Less commonA drop or a manufacturing defect can damage a cell and cause it to swell.
Trackpad hardware fault
Less commonIf the case is flat and the battery is healthy, the trackpad itself or its cable may have failed.
What You Can Try at Home
Place the Mac on a flat table
If it rocks or the bottom case is pushed out, the battery is likely swollen.
Stop charging and shut down
Unplug the charger and shut the Mac down. Keep it away from heat and do not press on the bulge.
Back up if you can do it safely
If the Mac still runs normally, make a quick backup with Time Machine, then shut it down.
Do not open or puncture it
Never try to remove a swollen battery yourself. Puncturing a cell can cause a fire.
When to Get Professional Help
A swollen battery should be replaced as soon as possible. We remove it safely and check the trackpad, keyboard and logic board underneath for damage from the pressure.
WarriorMac Repair Cost
MacBook battery replacement: from $79 (MacBook Air M1/M2) up to $325 (MacBook Pro 16-inch), depending on the model. Trackpad repair, if needed: from $79. Free diagnosis.
Frequently Asked Questions
Is a swollen MacBook battery dangerous?
It can be. A swollen battery is under internal pressure and can catch fire if punctured or overheated. Stop charging it and get it replaced soon.
Will my trackpad work again after the battery is replaced?
Usually, yes. Once the swollen battery is out, the trackpad can move freely again. If the pressure damaged it, we tell you before doing anything extra.
Can I ship a MacBook with a swollen battery?
Contact us first. We will tell you how to pack it safely, or you can drop it off at our Tampa shop.