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Current version by: oldturkey03 (vote details) ,

Title:

Where is the battery sensor in an A1304?

Text:

I have a problem with a MacBook Air 2,1 A1304.
 
The MacBook runs fine from the power supply, but the battery will not charge and the computer will not run from the battery (even though a battery is present, working, and has over 60% charge). MacOS shows no battery present.
 
Running Mac Hardware Test results in error code:
 
Error code: 4SNS/1/40000001: TB1T-0.000
 
This is a temperature sensor error and - I presume - therefore the battery temperature sensor?
 
The question then is what, if anything, could be done about this?
 
I have searched widely but cannot find where the battery temperature sensor is located on an A1304. Any tips most welcome!
 
These photos illustrate the problem:
 
'''Coconut Battery - note the temperature!'''
 
[image|1485152]
 
'''No battery recognised in MacOS'''
 
[image|1485151]
 
'''System Report'''
 
[image|1485147]
 
But when booting with Ubuntu...
 
'''Battery is recognised - and has charge, but is NOT charging (MagSafe shows green LED)'''
 
[image|1485148]
 
'''More detail'''
 
[image|1485150]
[image|1485150]
 
'''Further update'''
 
The question was raised below if this was simply a battery problem. No - the same happens with other batteries I have tried, and the batteries are new or new-ish. These two screenshots show Coconut Battery and the Ubuntu battery overview - but with a different battery installed. The same faulty temperature reading in Coconut Battery.
 
[image|1485337]
 
[image|1485338]

Device:

MacBook Air Models A1237 and A1304

Status:

open

Accepted Answer:

494228

Edit by: Jon Worth ,

Title:

Where is the battery sensor in an A1304?

Text:

I have a problem with a MacBook Air 2,1 A1304.
 
The MacBook runs fine from the power supply, but the battery will not charge and the computer will not run from the battery (even though a battery is present, working, and has over 60% charge). MacOS shows no battery present.
 
Running Mac Hardware Test results in error code:
 
Error code: 4SNS/1/40000001: TB1T-0.000
 
This is a temperature sensor error and - I presume - therefore the battery temperature sensor?
 
The question then is what, if anything, could be done about this?
 
I have searched widely but cannot find where the battery temperature sensor is located on an A1304. Any tips most welcome!
I have searched widely but cannot find where the battery temperature sensor is located on an A1304. Any tips most welcome!
 
These photos illustrate the problem:
 
'''Coconut Battery - note the temperature!'''
 
[image|1485152]
 
'''No battery recognised in MacOS'''
 
[image|1485151]
 
'''System Report'''
 
[image|1485147]
 
But when booting with Ubuntu...
 
'''Battery is recognised - and has charge, but is NOT charging (MagSafe shows green LED)'''
 
[image|1485148]
 
'''More detail'''
[image|1485150
[image|1485150]

'''Further update'''
The question was raised below if this was simply a battery problem. No - the same happens with other batteries I have tried, and the batteries are new or new-ish. These two screenshots show Coconut Battery and the Ubuntu battery overview - but with a different battery installed. The same faulty temperature reading in Coconut Battery.
[image|1485337]
[image|1485338
]
[image|1485150
[image|1485150]

'''Further update'''
The question was raised below if this was simply a battery problem. No - the same happens with other batteries I have tried, and the batteries are new or new-ish. These two screenshots show Coconut Battery and the Ubuntu battery overview - but with a different battery installed. The same faulty temperature reading in Coconut Battery.
[image|1485337]
[image|1485338
]

Device:

MacBook Air Models A1237 and A1304

Status:

open

Edit by: Jon Worth ,

Title:

Where is the battery sensor in an A1304?

Text:

I have a problem with a MacBook Air 2,1 A1304.
 
The MacBook runs fine from the power supply, but the battery will not charge and the computer will not run from the battery (even though a battery is present, working, and has over 60% charge). MacOS shows no battery present.
 
Running Mac Hardware Test results in error code:
 
Error code: 4SNS/1/40000001: TB1T-0.000
 
This is a temperature sensor error and - I presume - therefore the battery temperature sensor?
 
The question then is what, if anything, could be done about this?
 
I have searched widely but cannot find where the battery temperature sensor is located on an A1304. Any tips most welcome!

These photos illustrate the problem:
'''Coconut Battery - note the temperature!'''
[image|1485152]

'''No battery recognised in MacOS'''
[image|1485151]

'''System Report'''
[image|1485147]

But when booting with Ubuntu...

'''Battery is recognised - and has charge, but is NOT charging (MagSafe shows green LED)'''
[image|1485148]

'''More detail'''
[image|1485150]
I have searched widely but cannot find where the battery temperature sensor is located on an A1304. Any tips most welcome!

These photos illustrate the problem:
'''Coconut Battery - note the temperature!'''
[image|1485152]

'''No battery recognised in MacOS'''
[image|1485151]

'''System Report'''
[image|1485147]

But when booting with Ubuntu...

'''Battery is recognised - and has charge, but is NOT charging (MagSafe shows green LED)'''
[image|1485148]

'''More detail'''
[image|1485150]

Device:

MacBook Air Models A1237 and A1304

Status:

open

Original post by: Jon Worth ,

Title:

Where is the battery sensor in an A1304?

Text:

I have a problem with a MacBook Air 2,1 A1304.

The MacBook runs fine from the power supply, but the battery will not charge and the computer will not run from the battery (even though a battery is present, working, and has over 60% charge). MacOS shows no battery present.

Running Mac Hardware Test results in error code:

Error code: 4SNS/1/40000001: TB1T-0.000

This is a temperature sensor error and - I presume - therefore the battery temperature sensor?

The question then is what, if anything, could be done about this?

I have searched widely but cannot find where the battery temperature sensor is located on an A1304. Any tips most welcome!

Device:

MacBook Air Models A1237 and A1304

Status:

open