Скачать или смотреть CMIzapper Battery Port Tester (BPT) using with Medusa

The CMIzapper Battery Port Tester is an easy to use tool to see many interesting things about a Mac motherboard you are working on.
It does two things:
1- It 'pretends' to be a battery. So no need to connect a real, bulky, expensive and vulnerable battery wile repairing. Many Macs will not power-on without a battery, and many (≥ 2011) will run at 1/4 speed without a battery. Plugging in the CMIzapper Battery Port Tester is much easier and safer than using a real (Apple) battery.
2- The tester has many LEDs that give you useful information about what is and what is not working in the Mac motherboard it is connected to.
It shows you if the Mac is trying to charge the 'battery'.
It shows if the charging voltage is dangerously high (plus the speaker will bleep to warn you).
It shows if the SMC is alive and running.
It shows if the charger controller (ISL) is alive and running.
If there is a problem with the I2C bus itself it will tell you the problem.

It can also be connected to the Medusa in Listener mode. The display of the Medusa will show even more information:
The charging voltage supplied by the Mac
The value of System Presence Detect resistor R6950. This resistor in the Mac tells the battery to talk to the Mac.