MacBook Pro mid-2015 sleep problem

[polanskiman]

[I am reposting this here since Apple Community removed my post because it supposedly "discussed questionable advice or inappropriate activities". Juge for yourself how inappropriate the post below is. Not sure what they are taking at Cuppertino, but they might need a new doctor's prescription.]

I have a MacBook Pro retina mid-2015 with Mac OS Mojave 10.14.6 installed.

I recently (like 3 weeks ago) changed the battery as the original one was swollen and ready to burst. SMC was reset. New battery is calibrated. All done according to protocol. Battery only has 19 cycles and is has a full charge capacity of 100% of design capacity.

New battery seems to work fine except now when the battery is flat the computer will hard shut down no questions asked. No sleep, no standby no nothing. if I try restarting it will start the boot process and then suddenly shutdown again since battery is exhausted. If I plug the charger then all is good.

So question is, why is the computer not going to sleep when battery is low and instead does a hard shutdown. This is no bueno.

I have searched and searched over the internet and found no solution to this, however I found many people having the same issue.

Any help would be appreciated.

Thank you.

 

[Sanpete]

Is it an Apple battery or a third-party one? If the latter, it's probably not designed exactly the same way, and isn't going to work the same way for what you describe. Not unusual for lower-quality batteries to peter out faster when they get low.

I wonder if there's software that would warn you when the battery gets down to, say, 10%, so you could avoid that. (20% might be better, according to some advice about maintaining batteries.)

 

[polanskiman]

It is an Apple certified battery sold by a reputable battery seller. The OS does provide the % of the battery. I also have Coconut battery installed which gives me the %.

 

[Sanpete]

Have you noticed at what reported percentage it shuts down? Maybe it isn't being read correctly when at the low end of the charge and dies before it can shut down as a result.

 

[polanskiman]

It starts giving low battery warnings at ~7%. It then shuts down at around 1% or 2% which seems normal.

 

[Sanpete]

It seems from what you've said that it's running out of power before it can complete the shutdown properly. Don't know if there's an automatic way to get it to shut down at a higher reported charge.

 

[polanskiman]

Could be. I might try a recalibration to see if that solves the problem but I doubt. I read in a few places that it could be a battery firmware related problem.

 

[polanskiman]

SMC reset + recalibration doesn't solve anything. This is so annoying.

 

[darkus]

I used to have something really similar happen to me with a 2012 MacBook Pro. This was with the original battery.

I would get a battery warning saying I had something like 7-10% battery left, then literally within 10-15 seconds it would hard shut down. It became a habit for me to race and run to get my charger when I saw the low battery warning because a hard shutdown was imminent. I’d usually lose that race.

I never did solve it but my ASSumption is that the last trickle of that battery had a flaw and wasn’t reporting how much was actually left in there at the end. Or alternatively something with the wiring that didn’t let it hold a steady power flow so that when there was the slightest interruption from low charge is would shutdown.

Either way I assumed it was dead and moved on to a new system.

While I’m not saying you should get an OEM Apple battery in your situation, but it does seem like your issue has something to do with that battery or the connectors and there might be something to gain from getting an Apple one since it might come in at a higher quality standard

 

[polanskiman]

Could be the quality yes. Can't discard that hypothesys.

While I’m not saying you should get an OEM Apple battery in your situation, but it does seem like your issue has something to do with that battery or the connectors and there might be something to gain from getting an Apple one since it might come in at a higher quality standard

It will also come at 300USD where I am. ? That's right. Apple doesn't change batteries alone. They also change the aluminium body along with the battery because they are sticked together. If nothing else works I might have to though.