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I own a 2017 MBP 13" (A1708) with the battery replaced about 6 weeks ago. Everything went nicely until this week, when it started charging inconsistently and coconutBattery shows 5-10W of charging. I plug the charger and it says "battery doesn't charge". Sometimes reconnecting the charger helps, sometimes not; the same is true about waiting some time. I've reset SMC couple time but it usually doesn't help. I’ve attached of screenshot showing coconutBattery output.enter image description here

Also I’ve ordered a new charger and cable.

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This one's probably going to come down to trial and error.

Potentially coconutBattery is providing incorrect information, so pay attention to the actual system behavior -- is it draining too quickly? Taking too long to charge? etc.

  1. First see what shows up under System Information under the "Power" section. Specifically look at if things are charging and what the Wattage of the power adapter is. That info can tell you if things appear to be working right, but coconutBattery is misreporting.
  2. If you have access to another charger, try that out. Look on the adapter if it's a replacement and make sure it's 61W or more.
  3. If that doesn't work, then there could be a short on the main logic board. If you check out Louis Rossmann he has several videos on charging issues that he's posted. His stuff is entertaining in general but probably not something you'd want to do yourself -- just to understand what might have went wrong. Louis Rossmann Youtube
  4. Lastly it's possible the battery that was installed was a bit funky. Lots of reviews on Amazon show that batteries can be great for several months and then just go bad.
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  • I've bought new charger (not Apple's original) and cable and it works fine. Seems like the old charger was dead. – roma ichenko Jan 11 at 4:06
  • That’s great! Watch for fraying near the ends of the cables. The old MagSafe ones were notorious for fraying before the connector. A USB-C cable is pretty cheap so you could always try that in order to test your old power brick. – wizdomonwheels Jan 11 at 4:35
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Sometimes, your mac will do this to preserve the battery. It learns from your charging habits and will wait to charge past 80% until you need it. for example, if you go to work every day (ok, maybe not right now during covid) at 8 o clock, and have your mac charge the entire night, it will charge to 80 during the night, then at around 7 o clock, finish charging, and by 8, it should be at close to 100%.

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  • It’s not the thing I have, I’ve disabled all the battery care an it doesn’t help. Looks like the charger doesn’t provide enough power or MB doesn’t take it. – roma ichenko Dec 12 '20 at 2:42
  • well then im not sure, but you should keep battery care on. to preserve your battery. – Skyline X Jan 25 at 21:32
  • I’ve disabled it to check if it isn’t charging because of battery management or because of charger itself. I’ve turned it back on. – roma ichenko Jan 26 at 4:14

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