Not charging the battery A1502

[MDY]

Macbook Pro A1502 2015. Board seems to be 820-4924
It sees the battery and shows 3% but when I disconect the magsafe, it shutdown.
J7050 without ac adapter pin 1-9 at 0V
J7050 with ac adapter

pin1 - 12V and comes to 1V softly for 20 seg.
scl and sda - 3.4V
SYS_DETECT_L - 0V

Cannot fund where SYS_DETECT_L goes and if this is the problem.

 

[dukefawks]

Check for short to GND on PPVBAT_G3H_CONN. If that is OK then probably dead battery.

 

[MDY]

2014 and 2015 battery are compatible? They seems the same on picture.

 

[G.Beard]

2014 and 2015 battery are compatible? They seems the same on picture.

Yep

.................

 

[dukefawks]

Compare the Axxxx number. The must match.

 

[MDY]

2015 model is A1582
2014 model is A1493

So, they are compatible?

 

[ALB-Repairs]

They are compatible, However i think the 2013/14 model is slightly less capacity or something. Anyhow what i can tell you is a 2015 board charges a 2013 battery just fine.

 

[dukefawks]

Why take the chance? Some people say A1496 is compatible with A1405, I have seen enough issues with that. Order the right stuff.

 

[MDY]

Just now is hard to get 2015 model and pretty easy to get 2014 model. And have 2 different MBP 2015. One charge the battery up to 1V and second one up to 2.9V
So should be battery...

 

[larossmann]

If it won't run off the battery but will run off the charger it detects the battery:

99% of the time, bad battery
1% of the time, PP3V42_G3H is present on charger, but not on battery, because resistor feeding PPBUS_G3H to input of PP3V42_G3H regulator is blown.