The computer started right up, and holds a charge.įor some insane reason, while the battery now works somewhat properly, both the System Report AND Coconut Battery are ONLY showing the information from The Old Dead Battery, and neither will update to the NEW Battery Information under any circumstances! Tried resetting PRAM, SMC etc. The small circuit board where the Mag-Safe plugs in (the “DMC”?) was also replaced. We replaced the battery completely as many above suggested. UPDATE, Semi-Repair, Weird Residual Problems…. MacBook not recognizing battery, not even in coconutbattery very similar problems to this FixIt post, but I am not skilled enough to open the case: If I open About This Mac / System Report, it says this about the battery: Its as though that extra "5 hours of extra drain time" after it hits zero % has DAMAGED the laptop’s ability to even recognize what should be a perfectly good battery! I even reinstalled the whole operating system…. Starting from an external drive shows the same problem - no sign of the battery even when running from an external boot attached via USB (External Start Up Disk). Disk First Aid did nothing and says it’s “All Fine” (NOT). SMC reset could only be tried with power cable in (did not help), further PRAM reset did nothing, Mag-Safe power cable always has the orange light, and if power cable is detached the computer dies immediately. But then I closed it for a few hours and when I reopened it the problem was back and now worse than ever. I tried to reset the PRAM and it acted normal ONCE and charged up to 92% and CoconutBattery showed that normal 4000 amp capability, and about 690 cycles. CoconutBattery now shows empty fields where text should be, as though there is no battery to discuss? "Show Battery In Menu" (System Preferences / Energy Saver) literally will not work - you check it and it un-checks itself. Before this CoconutBattery showed ~4000 Amps out of the OG 4600 available, and the cycle count was only ~690. I did the recalibration because I was only getting 3-4 hours on a charge. When I returned to the laptop after the full 5+ hour post-0% power drain (second to last step), the battery is ABSOLUTELY NOT RECOGNIZED.
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