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Slow charging time. Charging with 2.3 watts

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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.
 
Bigdrago said:
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.
Click to expand...

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.
 
motrek said:
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.
Click to expand...

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...
 
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. :/
 
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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