croissantking
Well-known member
Have installed a rebuilt PRAM battery as well, this is great, I can power on without the charger!
’ve just replaced the 93C66 chip with the part you linked to and EMMpathy was able to correct all errors. So now I have one fully operational battery, at least. Thanks for the tip.
With one battery I get around 1:15 runtime, what about you?Awesome, glad that worked!
With one battery I get around 1:15 runtime, what about you?
Wow, thank you jmacz! Yes I deleted EMMpathy preferences file in the Preferences folder and it works. And after diagnostic the battery can be charged now. It's time to rebuild PRAM battery haha.Did you confirm that your power adapter is putting out both 16V outputs? One pin is for running the laptop and a second one is for charging the battery. You should check both pins are putting out the right voltage.
Where did you get the 93c66 chip from? Was it from another old battery or was it a new part?
I have no idea on the EMMpathy issue but you could check if the preferences file is in the Preferences folder in the System Folder and see if it’s damaged or just delete it and try again?
I got two more batteries, both are Apple made.
@alexGS more data for you: one of the batteries was a Sanyo (BS) and the other was a Panasonic (BP). The Sanyo was in great condition, no leaking inside. The Panasonic was leaking badly and the battery terminal contacts were heavily corroded. I think you also noticed your Sanyos were better than your Panasonics.
Does EMMPathy report the 2A charge rate? That seems too high to me, but it’s good that you’ve found cells that can handle it. What is your measured capacity in EMMPathy after a full discharge/recharge? I would find it inspiring if you’re getting over the 1752mAh default capacity, I can’t seem to quite reach itCool!
Hmm, my VBATT side is a 2A power supply so I would think my batteries are being charged at 2A (greater than your 1A). The pre-built packs that I am using are supposed to handle up to a 2A charge rate. Mine are holding up so far. But we'll see.