Before you go down this path lets see if we can get your system going. I find it hard to believe your battery has died this soon.
I'm assuming you can get the system to run with the power adapter plugged in if that is the case you should see a charging symbol. If not you either have a bad charger, USB-C cord or the outlet on your system has failed. You'll need to start with testing with new (good known) units. If the outlet is bad here is the IFIXIT guide to replace it: [guide|44886|Retina MacBook 2015 USB-C Port Replacement]. Apple won't admit it but having only one USB-C port on this model was a bad idea. I've seen three systems with bad ports now.
Lets say you can get the system to run then we need to first check the battery to see what it is telling us. Download this gem of an app: [http://www.coconut-flavour.com/coconutbattery/|CoconutBattery] paste a screenshot of the full main screen so we can see what it tells us.
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In the meantime lets see if giving the system a SMC reset helps things. Here is the Apple T/N on how to do it: [https://support.apple.com/en-us/HT201295|Reset the System Management Controller (SMC) on your Mac].
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In the meantime lets see if giving the system a SMC reset helps things. Here is the Apple T/N on how to do it: [https://support.apple.com/en-us/HT201295|Reset the System Management Controller (SMC) on your Mac].
Sometimes the simplest solutions are the better!
As to your questions on rigging your systems power system. Not so simple! Apple uses a feedback circuit which is what the small three contacts are for. You can't plug in a different power source internally. You're stuck in using an Apple battery here.
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=== Update (10/07/2017) ===
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At this point I think you'll need to visit an Apple Store or authorized Apple service center to see if they can help you isolate the problem. They will have a good working charger and cord. At worse the system may need a new battery as sitting unused for such a long duration could explain why the battery is dead.
Before you go down this path lets see if we can get your system going. I find it hard to believe your battery has died this soon.
I'm assuming you can get the system to run with the power adapter plugged in if that is the case you should see a charging symbol. If not you either have a bad charger, USB-C cord or the outlet on your system has failed. You'll need to start with testing with new (good known) units. If the outlet is bad here is the IFIXIT guide to replace it: [guide|44886|Retina MacBook 2015 USB-C Port Replacement]. Apple won't admit it but having only one USB-C port on this model was a bad idea. I've seen three systems with bad ports now.
Lets say you can get the system to run then we need to first check the battery to see what it is telling us. Download this gem of an app: [http://www.coconut-flavour.com/coconutbattery/|CoconutBattery] paste a screenshot of the full main screen so we can see what it tells us.
-
In the meantime lets see if giving the system a SMC reset helps things. Here is the Apple T/N on how to do it: [https://support.apple.com/en-us/HT201295|Reset the System Management Controller (SMC) on your Mac]. Sometimes the simplest solutions are the better!
+
In the meantime lets see if giving the system a SMC reset helps things. Here is the Apple T/N on how to do it: [https://support.apple.com/en-us/HT201295|Reset the System Management Controller (SMC) on your Mac].
+
+
Sometimes the simplest solutions are the better!
As to your questions on rigging your systems power system. Not so simple! Apple uses a feedback circuit which is what the small three contacts are for. You can't plug in a different power source internally. You're stuck in using an Apple battery here.
Before you go down this path lets see if we can get your system going. I find it hard to believe your battery has died this soon.
I'm assuming you can get the system to run with the power adapter plugged in if that is the case you should see a charging symbol. If not you either have a bad charger, USB-C cord or the outlet on your system has failed. You'll need to start with testing with new (good known) units. If the outlet is bad here is the IFIXIT guide to replace it: [guide|44886|Retina MacBook 2015 USB-C Port Replacement]. Apple won't admit it but having only one USB-C port on this model was a bad idea. I've seen three systems with bad ports now.
Lets say you can get the system to run then we need to first check the battery to see what it is telling us. Download this gem of an app: [http://www.coconut-flavour.com/coconutbattery/|CoconutBattery] paste a screenshot of the full main screen so we can see what it tells us.
In the meantime lets see if giving the system a SMC reset helps things. Here is the Apple T/N on how to do it: [https://support.apple.com/en-us/HT201295|Reset the System Management Controller (SMC) on your Mac]. Sometimes the simplest solutions are the better!
As to your questions on rigging your systems power system. Not so simple! Apple uses a feedback circuit which is what the small three contacts are for. You can't plug in a different power source internally. You're stuck in using an Apple battery here.