@pana4494 - Most of the time we are more focused on finding ways to power the logic board out of the system for testing. What if have done is with the Intel models is taken old batteries and disconnected the battery cell units salvaging the small board so I have the needed interface to mate to the logic board. Then I add a set of heavy power leads to my bench power supply setting its voltage and current limiter as needed. I'm sure Apple uses a jig to do the same thing with contact pins (Pogo's) that press against the board during Q/C. Not sure if they truly repair boards any more (a bit of green washing)
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Here we need to do the inverse!
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***Here we need to do the inverse!***
The problem is gaining access to the contacts while the battery is in place! Review this guide [guide|143618] Step 13 & 14 (follow the steps to it when you do this) we can see the lifting of the logic board connection to the two pads on the battery underneath
[image|3043797]
Now you need to create a matching interface which you can secure to the battery to emulate the mate, and it can't interfere with the logic boards connector. with its leads to your bench power supply so you can properly charge your battery.
Sorry you can't use the USB-C charger here as the Quick Charge feedback is not present so the chargers power is not regulated. And you do need a bench supply that has a current limiter.
Even still you can't leave the battery under charge without some level of monitoring as you can quickly over charge it without realizing which could be disastrous! I would rig a thermal sensor on the battery and watch things very carefully noting if the battery swells & temp gets to high.
I wouldn't try fully charging, just enough to get the system to respond as needed here.
***As you can see here this is not easy!*** And if you don't have a good way to interface with the battery you could create a short which could damage the battery as well as the system.
The other option while also not fun is just bite the bullet and replace the battery! Which without the needed tools, interface jig or even the bench power supply is the better and cheaper way to tackle this! [product|IF123-156]
@pana4494 - Most of the time we are more focused on finding ways to power the logic board out of the system for testing. What if have done is with the Intel models is taken old batteries and disconnected the battery cell units salvaging the small board so I have the needed interface to mate to the logic board. Then I add a set of heavy power leads to my bench power supply setting its voltage and current limiter as needed. I'm sure Apple uses a jig to do the same thing with contact pins (Pogo's) that press against the board during Q/C. Not sure if they truly repair boards any more (a bit of green washing)
Here we need to do the inverse!
The problem is gaining access to the contacts while the battery is in place! Review this guide [guide|143618] Step 13 & 14 (follow the steps to it when you do this) we can see the lifting of the logic board connection to the two pads on the battery underneath
[image|3043797]
Now you need to create a matching interface which you can secure to the battery to emulate the mate, and it can't interfere with the logic boards connector. with its leads to your bench power supply so you can properly charge your battery.
Sorry you can't use the USB-C charger here as the Quick Charge feedback is not present so the chargers power is not regulated. And you do need a bench supply that has a current limiter.
Even still you can't leave the battery under charge without some level of monitoring as you can quickly over charge it without realizing which could be disastrous! I would rig a thermal sensor on the battery and watch things very carefully noting if the battery swells & temp gets to high.
I wouldn't try fully charging, just enough to get the system to respond as needed here.
***As you can see here this is not easy!*** And if you don't have a good way to interface with the battery you could create a short which could damage the battery as well as the system.
The other option while also not fun is just bite the bullet and replace the battery! Which without the needed tools, interface jig or even the bench power supply is the better and cheaper way to tackle this! [product|IF123-156]