Slow charging time. Charging with 2.3 watts

Bigdrago

macrumors newbie
Original poster
Jan 16, 2015
16
0
Hi.
I have cleaned everything after someone spilled coca-cola on my macbook air 13" mid 2013.
After cleaning all components works, even did a full reinstall of yosemite.

But the charging time is extremely long. From 2% to 100% it took over 20 hours. According to batteryhealth it is charging with 2.3 watts.
Yes I have tried other chargers with the same result.

I changed the I/O board cable and suddently it charged with full power. But the next day when inserting the charger it is charging slow again with 2.3 watts.

So... are there any fuses I can change?
Or is it the battery that needs to be changed? Battery age 1.7 years, cycles 93, original max 7150mAh, health 95%.
But the health got to 99% when the charger was charging full. Now it is back to 95% when charging with 2.3 watts.

Taking it to a repair shop wont do any good...because one of the LSI indicators on the logic board is red. Yes I have reset SMC.
 

motrek

macrumors 68020
Sep 14, 2012
2,428
150
Hi.
I have cleaned everything after someone spilled coca-cola on my macbook air 13" mid 2013.
After cleaning all components works, even did a full reinstall of yosemite.

But the charging time is extremely long. From 2% to 100% it took over 20 hours. According to batteryhealth it is charging with 2.3 watts.
Yes I have tried other chargers with the same result.

I changed the I/O board cable and suddently it charged with full power. But the next day when inserting the charger it is charging slow again with 2.3 watts.

So... are there any fuses I can change?
Or is it the battery that needs to be changed? Battery age 1.7 years, cycles 93, original max 7150mAh, health 95%.
But the health got to 99% when the charger was charging full. Now it is back to 95% when charging with 2.3 watts.

Taking it to a repair shop wont do any good...because one of the LSI indicators on the logic board is red. Yes I have reset SMC.
Dunno but please realize that the laptop doesn't charge at a constant rate. It will charge quickly until 80% and then slowly and then after ~95% it charges very, very slowly.

I have seen OS X predict 40 minutes to charge from 98% to full.

This is presumably so the battery doesn't get overcharged and damaged.

So be aware of this when you are measuring charge rates.
 

Bigdrago

macrumors newbie
Original poster
Jan 16, 2015
16
0
Dunno but please realize that the laptop doesn't charge at a constant rate. It will charge quickly until 80% and then slowly and then after ~95% it charges very, very slowly.

I have seen OS X predict 40 minutes to charge from 98% to full.

This is presumably so the battery doesn't get overcharged and damaged.

So be aware of this when you are measuring charge rates.
Yeah... but from 2% to 80% should not be 20 hours of charging :) Maybe the batteri itself think it is 95% and therefore charging slow...
 

Bigdrago

macrumors newbie
Original poster
Jan 16, 2015
16
0
Interesting.. I disconnected the battery before going to bed, then it had about 70%.
This morning I connected the battery and inserted the charger. I noticed that the charger was giving 44W with a monitor, the app "battery health" also showed full charging speed. After a few minutes it decreased to 2.4 watts again. :/
 

Bigdrago

macrumors newbie
Original poster
Jan 16, 2015
16
0
Bought a new battery and I/O board... still slow charging.
Guess it must be a charging circuit on the logic board causing the problem...
 
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