Chosen Solution
{Problem: Everything works on the Mac except the battery doesn’t charge, and there is no light on the MagSafe2 to indicate status. The system is being powered by the adapter. It says power source: power adapter. It also says Battery not charging.} I installed a replacement battery from ifixit for my mbp 15” early 2013 and the install went fine, everything works… except… the battery won’t charge. It arrived with 70% and even with the power adapter connected it has slowly run down to 1%. I have tried to reset the SMC, the PRAM/NVRam, I have rebooted, I have disconnected and reconnected the power adapter from the outlet and the computer. I have disconnected and reconnected the battery. I have checked that all the internal cables are seated properly. I ran ASD and it failed test #51 “Checks to see if the Battery is using the programmed ATV Table. Error message: Error -26 [Programmed charge Table Not in Use] TEST FAILED HELP!!! IFixit don’t seem to have any interest in engaging with the problem, no real technical support, they did offer a refund fairly swiftly, but weren’t interested in investigating. Update (09/20/2021)
As you can see it sees the battery it says it’s ‘good’, has 1 cycle, but won’t charge even with the power adapter attached. The magsafe2 although running the computer doesn’t light up btw. I have disconnected and reconnected the power supply from the outlet and the computer. Magsafe2 looks clean
Not good ;-{ The logic board comparator logic is damaged. You likely killed it with a knockoff charger, here’s a great explanation How cheap eBay batteries DESTROY Macbook logic boards! This is a comparator measuring the voltages and it’s damaged.
What I would do to figure out if it is the battery or the board is disconnect the battery then plug it in to see if it will boot up if it does its the batteryif no power comes on it could be the charging port, charger, or motherboard
