Charged Battery Still Has To Be Plugged In For Like A Few Seconds Macbook Pro 15 Retina Display Mid 2015

Chosen Solution

So I replaced the battery and it works great except for this one weird issue. The batter works and holds a charge. However, if I leave the laptop unplugged for more than an hour or so, it won’t work when I try to use it unless I plug it in for a few seconds. Once I plug it in, it recognizes that the battery is actually charged (e.g. 83%) and it works like normal. Any ideas about what could be going on?

Here’s what things look like when I plug it in for a few minutes.

OK, let it fully charge, then you’ll need to reset SMC then let the battery run down until is shuts its self off (not going to sleep). Then recharge the battery fully that should fix it.