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Released April 2010 / 2.4, 2.53 GHz Core i5 or 2.66 GHz Core i7 Processors

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Horribly slow charging after new battery.

I replaced the battery on my mac with a "high-quality" one that i bought from ifixit, this is because the old battery lost its health and decided to get pregnant along the way (literally inflated and was damaging the unibody until i took it out). When i replaced the battery i had to charge it, i plugged it in (it had 37%) and it said it will 26 HOURS to charge to max.

After alot of googling and researching i found out that maybe my charge circuit is damaged. every other person who has/had this issue had spilled something on or damaged their computer for this to happen, my computer is in perfect condition and this is the only issue.

i found this post on ifixit: Slow charging time. Charging with 2.3 watts

He has the same problem because he spilled something on his computer but i didnt. PREDICTION: maybe the unhealthy battery causes damage to the charge circuit?

i also for some reason cannot run apple hardware test because everytime i try to start it just stays on the gray screen.

Another weird thing is that sometimes my Magsafe plug gets positioned in a weird way and the light either turns off or turns green, when this happens my mac charges EXTREMELY fast and the magsafe heats up alot. could this be a damaged connector?

actual answer appreciated :p

Update (04/11/2016)

no one have even a clue to how to fix this? ;-;

Update (04/11/2016)

also keep in mind the old battery was really messed up. i wanted to not spend money and buy a new battery, i had a early 2011 battery laying around with a different connector head, i tried to transplant the head from the old battery to the new one which didnt work so i bought a new battery.

Does a messed up battery/wrong battery have an effect directly on the charging circuit or not?

Answer this question I have this problem too

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11 Comments

If you tried using the rewired battery you could have damaged the charging logic on the logic board if you hadn't wire things correctly.

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is the charging circuit directly on the logic board or is it seperate? if i have damaged it then i want to know if i have to buy a 350$ logic board or a cheap circuit.

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Yes, the charging logic is part of the logic board. So you'll need to find someone with the skills to fix the logic board or replace it.

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Is there any way to know for sure this is the issue? i am willing to break down the laptop if necessary. because i dont want to replace/fix anything without knowing the results.

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Did you replace the battery yet? I would start off there.

Not much you can do here without deeper skill set, schematics and the correct tools.

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Check the mag-safe port and see if something is in there blocking a good connection. Also use a toothpick to test the retractability of the pins on the adapter to see that they are extending fully.

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4 Comments:

I would add, is the contacts nice and shiny and is the plastic melted on the MageSafe connector? If it is I would replace the DC-In Board.

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No, everything on the mac is clean, as for the charger, my dad recently bought a thunderbolt display which has a built in magsafe connector which has the same exact results so its not from my charger. it seems like its the DC in board. i already spent alot of money on this laptop lol

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At this point I would try a SMC reset. Disconnect the battery and the Mag-safe adapter. Press and hold the power button for 10 seconds. The hook it back up and see if the problems is gone.

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This issue cannot be solved by an SMC reset, i have tried everything. The final issue is a broken charger circuit which either needs a Logic Board replacement or proper skilled repair.

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Interceptor will be eternally grateful.
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