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Un piccolo aggiornamento del MacBook Air di fine 2019, con lo stesso numero di modello (A1932) e numero EMC (3184). Questo modello ha uno schermo True Tone e una batteria leggermente revisionata.

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Battery not recognized after replacing swollen battery MacBook Air

Hi,

I have a Macbook Air 13" (2019) that was not keeping a charge and eventually would just turn off when unplugged. I thought it would just need a new battery. So ordered the replacement Ifixit battery for the model. When I opened up the macbook, the original battery was slightly swollen so I took extra care removing it. I performed the surgery on the laptop, swapped batteries and re-assembled. On boot, everything is working (screen, trackpad, speakers, etc.) except that the battery is not showing up as recognized (an X on the battery icon on login screen) and the macbook requires staying plugged in. It also feels very slow. Its my girlfriends laptop, so I don't ever use it, but it stills feels sluggish. Besides the swollen battery, I did not see any damage on the logic board, though I wasn't really looking out for any. Did a SMC reset and a system update (laptop had been sitting for a month or two waiting for the repair). Still no luck.

Not sure where to go from here, open back up and remove logic board to inspect for damage? Would the swollen battery have affected the logic board?

Any help would be great thanks!

EDIT:

CoconutBattery main screen showing no battery detected.

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EDIT 2:

Here are the pictures of battery connector with the new battery. It's as connected as the old one was, no damage visible on the mainboard.

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As requested, I managed to connect the old swollen battery without removing the newly installed one (just got creative with some electrical tape to hold things in place). Wildly enough, the old swollen battery is recognized by Coconut Battery and was trying to charge. The laptop ran smoother and the fan wasn't going full tilt while I had the macbook running to get the pictures. Could the new Ifixit battery be faulty/bad connectors? Where to look?

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EDIT 3

Last question before I reach out to IFixIt. As I was cleaning up the macbook and giving the new battery one last try (no luck). I noticed the control boards on each battery are quite different in layout and modules. I'm no expert, but would this difference in control boards be the source of my issues? Left is old recognized battery and right is new troubled battery.

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A swollen battery can damage the battery connector or surrounding components, causing the system to ignore the new battery. First, reopen the MacBook and re-seat the battery cable firmly—this is the most common cause of the “X” icon. Inspect the connector and board for corrosion, bent pins, or pressure damage. Also ensure the replacement battery’s flex cable isn’t kinked. If reseating doesn’t help, try an SMC reset again. Persistent issues usually mean a damaged battery connector or logic-board power IC, which requires board-level repair. The sluggish performance happens because macOS throttles when no battery is detected.

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The laptop will go into a safe mode when no battery is detected, so go over the guide to ensure that all connections are seated correctly, it is most likely that the battery connection needs checking. If all is connected firmly and the battery is still not being detected then there could be an issue with the connector or the battery lines on the board, but hopefully it is just a simple reconnect the battery job as shown in steps 3 & 4.

Sostituzione batteria MacBook Air 13" Retina Display 2019

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I already opened the laptop back up and verified the battery connection. The original adhesive felt a bit dull. So verified the connection, and added fresh electrical tape to secure it. Still not recognized.

da

@nickwinter Then it can be any one of three issues, a damaged connector, a fault on the board on the battery data lines or a bad battery. Do you still have the old battery to test with? IF so that would eliminate the 1st 2 potential issues if it were detected.

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I still have it, but the old battery was not taking a charge either before the swap. But I guess coconut battery could test if at least it was detected. It is a swollen battery though, not sure how risky that is and not sure I could set it up would doing another full teardown, swap and reinstall. Could see if cable would allow a superficial connection with the battery outside of frame.

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@nickwinter Yes just to see if it were recognized..... maybe you can connect it somehow without removing the new battery.....

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See Edit 2 on the main post. The old battery is recognized and was trying to charge.

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Before you open the system back up I would install a better tool to see what's going on.

Install this gem of an App CoconutBattery take a snapshot of the Apps main window and post it here so we too can see things. Make sure the charger is plugged in when you do this.

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If the battery isn't being recognized then how on earth is CB going to be able to provide any information?

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@livfe - The SMC services should still be working! Which CoconutBattery is reporting from. Remember if the system is powered SMC is alive and it can give us clues on what happened.

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Trying to download it now. The macbook is running at a snail's pace with the fan going full tilt. Took about 10min to get safari to open, get to the webpage and start the download. The download is going, but at this pace it will be done by tomorrow. Hopefully I can get it installed.

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Added an edit to main post with the Coconut Battery screen. No battery detected.

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@nickwinter - Let’s carefully disconnect the battery again and inspect the cable as well as it’s connectors pins as well as the sockets, do you see any out of place or damaged? If not plug the battery in again and make sure you press the connector fully in. You may need to rock it back and forth as it can be a bit tight and the pins need a bit of help aligning up. If you can take a picture of the connection so we can see it as well.

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If the replacement battery doesn't work and the original one does then it's probably the new battery's issue. Right now the connector isn't damaged, the motherboard isn't damaged, the original battery is swollen but recognized by CB and MacBook, but the new battery isn't, which means very possibly there's something wrong with the replacement battery.

The motherboard would be okay even if the battery's swollen, since a swollen battery shouldn't put any stress on the motherboard at all. The reason why it's sluggish is because if the Mac doesn't recognize the battery, it would throttle the performance, presumably to prevent faulty replacement batteries burning up.

The best solution now is to buy a new battery(or a secondhand battery harvested from other MacBooks) and see if the issue persists.

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@livfe Thanks, edited my answer.

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@leooooooooo Off topic, the batteries on the older 11" & 13" models also had a tiny increase from their original release batteries. 2011 & 2012 had 35w, 2013-2017 had 38w, & the 13" 50w to 54w. Replacements AFAICR are nowadays all of the higher values and were compatible for all.

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@livfe Thanks for the tip, didn't know that they're compatible :)

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@leooooooooo Thing is, Apple does these minute 'improvements' so you may have had a point, no real way to find out unless we have at hand all versions to play around with. I would side with they all should work fine. Some battery suppliers may still have the 1st gen batteries and others most likely the newer. I discovered this when replacing a battery a long time ago on a MBA and noticed they had a different wattage, supplier said it was no problem, all worked OK. The more modern Macs it maybe it does make a difference. These 2018-2020 Airs were I think a bit unique for this 'battery' change. But I think it is near certain that the given answers have nailed the problem.

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Nick Winter sarà eternamente grato.
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