MBP turns off immediately after charger disconnected

Hi Community,

My MBP (15" retina, late 2013) has started to turn off immediately when the magsafe charger is disconnected. It won't show any sign of life when the power chord is disconnected, and shut off immediately when I detach the charger.

The battery was at about 86% when this issue has presented. I know it was about time to replace it but the sudden appearance of this issue makes me think if there is indeed a problem with the charger or the culprit is some other hardware (motherboard, or magsafe board?).

So, I would like to exclude any other hardware issue them before replacing the battery.

Anyway, I googled and tried to reset SMC and PRAM. nothing changed.

I also opened it and disconnected the battery pin from the motherboard, waited a little bit and the reconnected everything.

here is a Coconutbattery screenshot for you:

I also ran apple system diagnostic and it seems to point to a problem with the charger.

Also, no water damage as far as I know, I got it second hand in 2019 and no issue so far.

If you have any suggestion, it is more than welcome.

all the best,

Hi @danj,

Thank you very much for your support.

I replaced the battery with the one sent from ifixit store and it works perfectly.

Very grateful for the help