3 Replaced MacBook Pro battery, getting erroneous low power boot screen
I recently replaced the battery in my MacBook Pro (Retina, 15-inch, Mid 2015) with a battery I purchased from iFixit. This computer model is also known by other names/idenfitiers, all of which are shown at the iFixit link below:
https://www.ifixit.com/Info/ID-your-Mac/...
After installing the new battery, which went off without issue, I followed the recommended calibration procedures set out in the iFixit battery replacement guide. Now, the battery charges and discharges fine, and I'm satisfied with the lifespan of the new battery. However...
I've encountered a significant problem since replacing the battery. If I shut down the computer, or allow it to sleep by shutting the lid for a while, upon turning it back on I get a low power indication (see photo below):
I find the only remedy when this happens is to plug the computer into its AC adapter, at which point it'll turn on just fine. Every time I've done this, though, I discover the computer still has ample battery charge left when it turns on. I'm not talking 5 or 10%, it's always been 50%+.
I'm so confused as to why this is happening. Why will the computer run on battery power just fine, but needs a "jumpstart" from the AC adapter to get going?
I've tried resetting PRAM and SMC, and the issue has not resolved itself.
Any suggestions you may have are much appreciated. Thank you!
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crwdns2934109:0crwdne2934109:0
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Let’s get a better view of things, install this gem of an app! CoconutBattery take a snapshot of the apps main window and post it here for us to see Adding images to an existing question
This series came in two versions the Intergraded graphics (IG) and the Discreet Graphics (DG)
Basically, its the same just a different logic board which either has the Intel graphic services (IG) or got the AMD Radeon GPU added (DG)
crwdns2934271:0crwdnd2934271:0 Dan crwdne2934271:0
Thanks for replying, Dan! I've added screenshots of CoconutBattery as an edit to the original post. I included the "Mac info" and "Battery info" sub-screens as well to provide additional information.
Also included is a screenshot of the "Graphics/Displays" page from System Information. This machine has the AMD Radeon R9 M370X discrete GPU.
Immediately jumping out at me from the CoconutBattery screenshots are:
1. Reported manufacture date of the replacement battery. Could it really be that old? That's older than the manufacture date of the machine itself.
2. I've seen the "Discharging with" number jumping around while I've been in and out of CoconutBattery. You can even see it vary a little from screenshot to screenshot (all taken within 60 seconds of each other). But while writing this post I've gone back and seen it over 20 Watts. How is that possible?
Very excited to hear what you interpret from this information. I so greatly appreciate your time.
crwdns2934271:0crwdnd2934271:0 bmoran crwdne2934271:0
Let's get one more CoconutBattery capture!
This one with the MagSafe plugged in. You'll need to have the battery in need of a charge like your captures show and you do need to give it a bit of time so the system goes into charge mode (wait 4~5 minutes)
crwdns2934271:0crwdnd2934271:0 Dan crwdne2934271:0
Added! I omitted a second capture of the "Mac info" sub-screen this time since nothing on that appears to change with or without the AC adapter plugged in.
crwdns2934271:0crwdnd2934271:0 bmoran crwdne2934271:0
bmoran you have had nothing like this happening with your old battery? You replaced it exactly why? This "Reported manufacture date of the replacement battery." warrants a bit more investigation into the battery as being the culprit. It may not be what it is supposed to be. Have you considered replacing the battery once more to see if that will resolve the issue?
crwdns2934271:0crwdnd2934271:0 oldturkey03 crwdne2934271:0
crwdns2934275:02crwdne2934275:0