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オリジナル投稿者: zzz ,

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Red probe on ground, black probe on SCL pin of battery, then on SDA pin of battery, in diode mode with multimeter. Post voltages. There are no schematics available for this laptop but this should be solvable through use of brains, same $@$* as every other machine.

It is not an SMC issue because it sees the battery so that will likely not see much. You'll want to check and see that current sensing resistors by ISL6259 are good. I can't tell you where that is since there is no documented schematic or boardview for this, so you will have to use your brain and find it. There will be two black resistors going to each side of a cap, and each side of that cap going to ISL6259. The opposite side of the two black resistors will be going to a resistor that comes from a 16 or 18v line when the charger is plugged in. Measure those.

And for F's sake, stock batteries if you plan on fixing these so you can see if it is just the battery

P.S.

It is a serviceable part, remove old battery and put new one in. Apple service manual is for people with no brain, toss it in the trash.

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