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The March 2015 update of Apple's 13" MacBook Pro Retina Display, model A1502, features fifth-generation Intel Core i5 and i7 processors and introduces the Force Touch trackpad.

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Is this a battery problem or a logic board problem?

Hey, my Macbook Pro ( 2015) doesn’t work without plugging in the charger. As soon as the cable is pulled out, it dies and on on connecting the charger again the laptop restarts with date set to January 1st.

I have gone through numerous posts here and I know my battery is old and has done a lot of cycles (720) but still it has around 83% capacity and is fully charged (screenshot attached) but from what I see is that people either have a battery problem or a logic board problem, so before buying a new battery I just wanted some confirmation if indeed this might be a battery problem.

Thanks for any help!

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This is a classic case of damaged battery power MOSFET’s.

Think how a stairway light switch works you turn it on at the top walk down and turn it off when you get to the bottom (3way switch).

Here we have two sets of MOSFET’s which controls the power to feed from the MagSafe charger to the battery as well as the logic board. But when you disconnect the battery the MOSFET’s that allow the battery to be the power source alone are not allowing it so the clock looses its power.

So you do need to get your logic board fixed! But why did it fail? You likely have a knockoff charger or the MagSafe power cord is damaged.

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Thanks a lot for replying!

My MagSafe charger is the one given by apple and has no damages so I've opened the back of my Macbook to check but couldn't see any MOSFET damaged, everything looks perfectly fine to me except the battery, which is puffed and swollen in 2 out of the 6 segments, I should probably remove the battery and keep it outside right? As I guess it's a potential safety hazard?

Also the coconutBattery now just says 0 for current charge, full charge capacity and the progress bar reads NaN.

Due to this COVID lockdown in my country I'm not able to take it for repair and It'd be really great if you could help me out with it :)

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Well, that adds a bit of new info!

The battery has now failed! Yes, take it out, don't use you system with it installed.

The damage to the MOSFET's is not always visible! With a fresh battery see if that works correctly if not the logic board will need attention.

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New problem Dan :|

Now the trackpad doesn't work but the keyboard works, I probably messed it up while taking out the battery. I'll have to replace that as well I guess!

Thanks a ton for helping out though.

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Aayush will be eternally grateful.
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