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Trackpad Issue, Battery Appears Not to be Swollen

Yesterday, my Macbook’s trackpad started bugging out. Moving by itself, clicking and zooming on its own, hardly usable. Doing some research, I found that this is a common issue due to the battery aging, swelling, and pressing upwards on the trackpad. Although the battery only has a little over 500 cycles on it, and coconutBattery says all is well, I started looking into replacements.

Being the frugal person I am, I decided to take out the battery and see for myself if that’s the actual problem before purchasing a new one, and the battery doesn’t appear to be swollen at all. In fact, it looks great aside from the left screw bracket being broken off (I bought this Macbook refurbished, so I’m guessing that’s where that came from).

Problem is, the trackpad issue does seem to go away once the battery’s been removed. I’m currently writing this with no battery on the power adapter and everything’s working great. Is there something else that I might be missing, or something that I can do to eliminate the problem?

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I had a similar issue with my boss' macbook air - finally replaced the battery and it fixed it. My wild guess - something with the battery circuit or RF disturbances. Post here if you find something solved

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If the battery its self is AOK and the trackpad works when you release the pressure on it from the battery that tells me the trackpad cable is damaged. Surprisingly its not just a cable its got a few massive chips on it too! I’m suspecting you have a cold solder joint on one of them, but given how cheap the part is I would just replace it US: Trackpad Flex Cable Apple P/N 922-9525 UK: Trackpad Flex Cable Apple P/N 922-9525

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Thanks for the responses! The trackpad started acting up again shortly after I posted this (without the battery in the computer), so I did a bit more digging and was ultimately looking to replace the trackpad.

I came across an Amazon ad that had a few troubleshooting steps to take before purchasing and ended up reseating the trackpad connector and loosening the screws that hold it in place to '“relieve some pressure” on the trackpad. There are some pliable metal brackets that hold the trackpad on and I pushed the trackpad up toward the outside of the computer slightly as well, just so it’s not sitting so close to the battery. That seems to have worked so far!

If I run into any more trouble, I’ll update here.

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