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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Water Damage: Runs on AC, Battery won't charge

My MacBook Pro got a bit wet, and now only runs with the MagSafe plugged in. With it plugged in, everything works as expected, but the battery does not charge, and my power source is listed as the power adapter. I have tried replacing the DC-In board for a chance at an inexpensive fix, but the new board shows the same symptoms. I have a feeling it's related to the battery connector to the logic board, as I'm seeing some very slight corrosion on the contacts of the board and can't seem to remove it after trying to clean it with isopropyl and a toothbrush. Below is the Power System Report and the Apple Store Diagnostic indicated a 'Failure' for the battery. I'm debating on replacing the battery or using a Logic Board Damage repair service if this can't be fixed easily. What should I do? Thanks.

Battery Information:

  • Model Information:
  • Serial Number: D865253W2ZTFY5HA7
  • Manufacturer: SMP
  • Device Name: bq20z451
  • Pack Lot Code: 0
  • PCB Lot Code: 0
  • Firmware Version: 702
  • Hardware Revision: 1
  • Cell Revision: 3217
  • Charge Information:
  • Charge Remaining (mAh): 4725
  • Fully Charged: No
  • Charging: No
  • Full Charge Capacity (mAh): 6183

Health Information:

  • Cycle Count: 71
  • Condition: Normal
  • Battery Installed: Yes
  • Amperage (mA): 0
  • Voltage (mV): 12235

System Power Settings:

  • AC Power:
    • System Sleep Timer (Minutes): 1
    • Disk Sleep Timer (Minutes): 10
    • Display Sleep Timer (Minutes): 10
    • Wake on AC Change: No
    • Wake on Clamshell Open: Yes
    • Wake on LAN: Yes
    • AutoPowerOff Delay: 14400
    • AutoPowerOff Enabled: 1
    • Current Power Source: Yes
    • DarkWakeBackgroundTasks: 1
    • Display Sleep Uses Dim: Yes
    • GPUSwitch: 2
    • Hibernate Mode: 3
    • PrioritizeNetworkReachabilityOverSleep: 0
    • Standby Delay: 10800
    • Standby Enabled: 1
  • Battery Power:
    • System Sleep Timer (Minutes): 1
    • Disk Sleep Timer (Minutes): 10
    • Display Sleep Timer (Minutes): 2
    • Wake on AC Change: No
    • Wake on Clamshell Open: Yes
    • AutoPowerOff Delay: 14400
    • AutoPowerOff Enabled: 1
    • DarkWakeBackgroundTasks: 0
    • Display Sleep Uses Dim: Yes
    • GPUSwitch: 2
    • Hibernate Mode: 3
    • Reduce Brightness: Yes
    • Standby Delay: 10800
    • Standby Enabled: 1

Hardware Configuration:

  • UPS Installed: No

AC Charger Information:

  • Connected: Yes
  • ID: 0x0921
  • Wattage (W): 60
  • Family: 0x0085
  • Serial Number: 0x00b93512
  • Charging: No
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Chosen Solution

Batteries for these models are very prissy and usually die a lot even from minor liquid damage.

However, the charging circuit could be damaged as well, and may produce the same symptoms.

Just this week I fixed 3 of those. One needed a battery while the second needed board repair and both were not charging; the third needed both :)

But all the wet retina models that I fixed needed a new battery. Whether only or in addition to board repair. The non retina, I'm yet to see one damaged from liquid spill.

First try an SMC reset. If no change, take it to Apple and let them examine it.

If they quote a top case, you need a battery.

If they quote a main board, you need a logic board repair service.

If they quote both, you need both obviously.

Or send it to a reputed repair store that will examine it and quote for you the needed.

Look up my profile, you have a link to a website with repair technicians who can perform this for you, if you'd like a few suggestions.

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I would try replacing the battery. Whenever I get a device in that has been water damaged, I usually have to replace the battery because water can short circuit the battery and ruin it.

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For what it's worth, the battery itself is almost always fine, it's the charge controller that upon detecting certain conditions (low voltage, shorts, etc...) shuts itself down and in most cases sets a software flag that essentially says "don't charge even if everything checks out". The repair usually involves reprogramming the chip and that is beyond what most shops are comfortable doing. Bewarned, it usually will cost far more in your time than what just buying a new battery would be.

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I have the same problem. Is this most likely the MagSafe board, the logic board, or something else? (Not likely the battery was good one minute, and completely bad 15 minutes later.)

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It's difficult to diagnose. But if the system says the battery is bad, than at the very least you know that the controller on the battery itself is reporting that, so you'd have to replace it (The battery not the controller). If it was liquid damage, you shouldn't even be turning the computer on, because that might be what killed it, Never turn a liquid damaged computer on without properly cleaning it with the proper equipment.

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Most of the computers that come in to the shop would be salvageable if the client hadn't turned the computer on after the spill.

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