Brand new iFIXIT battery not working
Hi guys,
First time asking but I've used this forum to troublshoot many issues on this machine and others over the years. Thanks in advance for your help!
I just ordered a replacement battery for my mid 2012 macbook pro. The original was getting pretty hopeless. I popped the new one in, proceeded with the calibration process. Everything seemed fine - charged up to %100 (+ an hour or two), unplugged it and drained it down (left overnight), then plagged it back in, charged it back up again. Used it while it was plugged in for a while. Thought I was good to go and took the thing to work.
Now unplugging power kills the thing instantly. It won't boot unplugged. I've tried everything in all the common threads, especially here
MacBook turns off when charger is disconnected
and here
MacBook Pros suddenly shutting down when disconnected from power adapter
PMU reset, PRAM reset, SMC bypass(??), SMC reset, every which way you can imagine (holding power anywhere between 5 seconds and 3 minutes, with and without all combinations of battery and AC plugged in).
Coconut says the battery is fine, and charged (see light colored screenshot).
I thought maybe the logic board had given out based on other answers, but lo and behold, I popped the old batter in and it starts up just fine with no no power plugged in. (see dark colored coconut screenshot )
Is this something flukey where its still not expecting such a high output from the new battery because the old one was so trashed? Did I screw something up in the calibration process? How can I drain the new battery down to start over when it the computer won't run from it alone? Is the new battery just a dud?
I’m gonna try switching back and see what happens, maybe use it plugged in for a bit and pray. Seems like the issue has resolved for some people when they clean the logic board or take apart the motherboard, but these always seem like accidental solutions, and doesn’t really make sense if the old battery works fine.
Any help is much appreciated!
EDIT: 4/25
Swapped back to the BRAND NEW battery and it booted just fine. Status read fully charged. Got halfway through typing the previous sentence and it dies suddenly again. What the heck is going on???
5条评论
Lets give this a try with the new battery installed and plugged in, Restart your system and press the D key to enter into Diagnostics, let's see if we can get an error code. Sadly depending on firmware version you have on your system diagnostics might not work. Let us know what you get.
Reference: Mac startup key combinations
由 Dan 完成的
Hi Dan, Thank for jumping on this so quickly! It says "No issues found. Reference Code ADP000"
由 Greggory Heller 完成的
Another thing I have noticed is that when I press the charge indicator button (on the side for mid 2012s) it doesn't behave normally with the new battery. It will light up a few of the lights, sometimes even most of them but it will shut off abruptly/prematurely. When its behaving normally a fully charged battery will illuminate all the lights and keep them for a bout 3 seconds, this normal behavior returns when it is plugged back in. Seems almost like it isn't able to deliver consistent power for some reason, but it can when plugged in/for long enough to fool the diagnostics? I wish I had gotten a coconut screenshot when it briefly booted unplugged but I was so happy it worked briefly I jumped out of troubleshooting mode :/
由 Greggory Heller 完成的
@Greggory Heller - That maybe the needed clue! The battery checker maybe your problem here. Carefully inspect the connection to the logic board for a damaged ribbon cable or take it out so you can clean the button and check for corrosion.
由 Dan 完成的
@Dan I looked it over briefly, and I don't see any signs of electrical damage, but I couldn't see where it connects to the motherboard (seemed to be on the keyboard side which is a bit harder to get too.
But further, since it works fine with a known functional battery I don't think this is the culprit... UNLESS! As I was swapping back to the old battery, I noticed the panel on the inside of the button (normally obscured by the battery itself) is a bit loose. Perhaps the old battery is swollen and holding it in place, and the new one doesn't. I'm doubtful, since I can still get some of the lights to come on briefly with the new battery but its still worth a shot. I will try tightening the panel and try to check the other end of the ribbon cable this evening when I have time.
由 Greggory Heller 完成的