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Was the problem solved? I have the same problem on my 2017 13" MBP, but I did well connect the battery cable (even buy another one to replace), trying again and again reset SMC, NVRAM, but it doesn't work. Looks like something wrong on the logic board...
The coconut battery snapshot as below, with charger or without charger.
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I do see the battery temp is on the warmer side, do you live it a hot climate? If not let’s give this a try, completely shutdown the system for the night fully charged and disconnected from the charger, then in the morning take a fresh snapshot of CoconutBattery. Let’s see if the temp goes down
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@danj Appreciate for the comment, in fact, my location here is southern of Taiwan, and the battery temperature is very closed to the room temperature. Even now in end Oct, the temperature outside sometimes still over 30degC.
@ivanwang - Yea, Taiwan can get quite hot and humid. Let’s stay focused on the temp as I still think that’s a signpost of the issue you are facing. So if that is your rooms ambient temp then the CPU is running much hotter!
Have you cleaned the dust and debris buildup inside? Get a small soft paint brush an a can of can’d air to loosen and then carefully blow out. Focus on the fan blades and heatsink fins at the fan as well as across the logic board and bottom cover.
I would recommend installing a good thermal monitoring App like TG Pro and lastly reduce long heavy processing Apps so the system is not as heavily taxed in your hotter climate or invest in some A/C to cool the room down better.
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@ivanwang - Did you follow the answer I provided?
Get a USB-C power meter to see if the system is accepting power. Let us know what you discover.
crwdns2934271:0crwdnd2934271:0 DanJ crwdne2934271:0
Yes, I see a normal situation on charging, 20.22-20.23V, 1.5-2.xxA (about 30 W) when charging battery, when 0.7-1A(about 7-15W) when battery is not charging (100%). So I believe the battery is ok, but system board can’t switch battery / AC power normally.
crwdns2934271:0crwdnd2934271:0 ivan wang crwdne2934271:0
@ivanwang - OK the system is getting power, so does the system turn on with USB-C power Vs Battery alone?
Download CoconutBattery (link above) and install it and take a snapshot of the Apps main window posting it here. Go into edit mode for your post above and click on the tool icon far right picture icon upload and then click on it to post the link ID in your update post.
crwdns2934271:0crwdnd2934271:0 DanJ crwdne2934271:0
@danj thanks, I’ve uploaded the coconut battery snapshot, sometimes it boot without charger but suddenly shutdown without any signal.
crwdns2934271:0crwdnd2934271:0 ivan wang crwdne2934271:0