Why does my MacBook Pro with a fixit battery installed keep rebooting every 10 seconds and won’t restart properly?

Why does my MacBook Pro with a fixit battery installed keep rebooting every 10 seconds and won’t restart properly?
I recently installed a fixit battery in my 15-inch MacBook Pro, hoping to address some performance issues I was experiencing. However, after the installation, I’ve encountered a persistent problem where my MacBook Pro won’t restart properly. Instead, it continuously reboots every 10 seconds, making it impossible to use. This endless reboot loop has been very frustrating and I can’t seem to find a reliable solution. I’ve double-checked the connections and ensured that the battery installation was done correctly, but the issue persists. I’m not sure if it’s a problem with the battery itself or something else within the system. Any insights into why this might be happening would be greatly appreciated.
6 Answers

Your problem might involve firmware level interaction between the battery and your system. Reflashing the MacBook’s firmware using Apple’s Firmware Restoration CD or performing a firmware reinstallation via Apple’s official methods can fix these complex issues. This advanced solution tackles underlying firmware conflicts causing persistent reboot loops.

Consider a software or internal hardware conflict, which could be causing the issue. Here’s a technical approach that might help:
1. Boot into Safe Mode by restarting your Mac and immediately holding the Shift key.
2. Safe Mode usually helps identify software or driver conflicts.
3. If Safe Mode doesn’t resolve the issue, consider reinstalling macOS from Recovery Mode:
– Restart your MacBook Pro and hold Command + R.
– Select ‘Reinstall macOS’ from the Utilities window and follow the on-screen instructions. This process, though extensive, can resolve persistent boot loop issues.

I ran into a similar problem, and resetting the PRAM (Parameter RAM) helped fix it. This process can resolve startup issues. Here’s how:
1. Shut down your MacBook Pro.
2. Turn it on while immediately pressing and holding Option + Command + P + R.
3. Keep holding these keys for about 20 seconds.
4. Release the keys and allow your MacBook Pro to reboot normally. This reset resolved my reboot loop issue.

There is a possibility that the fixit battery is defective. It is not uncommon for third-party batteries to have compatibility issues with MacBook Pros. You could try reinstalling the old battery to see if the problem persists. If your MacBook operates without the reboot loop, it might be necessary to contact the fixit battery supplier for a replacement.

It sounds like a software issue to me. Have you tried resetting your MacBook Pro’s SMC (System Management Controller)? This often resolves power and battery-related issues. Here’s how you can reset the SMC:
1. Shut down your MacBook Pro.
2. Connect it to the power adapter.
3. Press and hold Shift + Control + Option on the left side of the keyboard, and then press the power button. Hold for 10 seconds.
4. Release all the keys and the power button simultaneously.
5. Press the power button again to turn on your MacBook Pro.