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Home Forums 68kMLA Help - PowerBook G3 Lombard replacement battery issues — #9
Post #9 by coius
Source Forum68kMLA
CategoryTroubleshooting
Post DateFri, 27 May 2011 - 21:43
Original URLhttps://68kmla.org/bb/threads/help-powerbook-g3-lombard-replacement-battery-issues.23114/
Post
I got an RMA. Anyways, it sees the other battery, and can even see this, but only through battery reset. So it knows something is there. My father told me that some batteries use a serial technology called "I2C" to talk with the machine and vice-versa. Being an electrical engineer, he says it's very easy for these to die during the construction of the battery due to heat and soldering and the like, that it will stop reporting data to the machines. They saw this in some of the old Honeywell XBS controllers when they installed intelligent batteries. They used a third-party company to make the batteries, and 4 out of 5 of them shipped dead due to the I2C controller being damaged during the process of wiring them up. So it's possible the cells are fine, just the I2C serial communications controller being stuff.

Either way, I have seen this happen in another battery and it turned out when it was rebuilt, the cells were practically new, it was the intelligent controller that was dead. When battery patrol swapped it out on the dell battery, it only cost $15 for the controller and $20 to work on the battery. The battery itself at battery patrol (rather new laptop) cost close to $160 and Dell wanted $180 for a new battery, so it was a rather cheap fix (I don't rebuild batteries due to how hard they are and I don't have the tools, nor do I desire to do it).

I assume apple's issue with the whole battery reset was a controller chip that corrupted too easily, possibly due to early designs with the new controller they switched to in the 99/00 series and iBook batteries. And I believe. That was about the time Intel based machines were switching the ACPI from APM and required the use of different battery management techniques.

I already did a power manager reset, even pulling the batteries. Those were among the first things I did. I also did the battery reset. Since the logicboard saw the old battery both times with no issues, I am assuming it's working. I think the new battery controller board is just stuffed. Either way, it appears the company is going to swap it. I will send the new battery off today for a replacement.

mp.ls