My Netbook (Acer Aspire One), which, last time I used it, was good for more than 7 hours of runtime, decided to quit on me (I probably didn't recharge it last time I used it and it's about 3 months ago or so).
After trying to let it hang on the charger overnight with no luck, I broke the casing of the battery and all the cells (18650's) was still perfectly balanced although they were down to 2.41V.
I recharged and rebalanced the cells one by one the hard way and they seem fine, but the security circuit don't know any of that of course, so still refuse to make me happy.
I have found some software and hardware for running on a PC with a parallel port, which should be able to reset such circuits, but the chips in my battery isn't mentioned (although some with very close type numbers are).
If I were to go into a battery restore business, that would be fine, but for a single battery, around price of $225 is a bit hilarious, when I can get a new battery for like $84.
Alternatively, I could find the datasheets for the chips on-board, spend some time reading, device a circuit and get it fixed, but once again, the time spend wouldn't be justified for repairing a single battery.
The reason for wanting to repair it, instead of just shelling out for a new one is twofold - I dislike adding to the landfills with what is actually working stuff. And if there's a quick fix, $84 is like 5 bottles of Scotch or some addendum to the toolbox or partsbin.The Question:
Simple as it is... Does any of you have experience necromancing a security circuit In a lithium battery and care to share?
From my net searches on the subject, most people are dealing with run down cells and apart from the manufacturers, the circuits are considered some sort of dark arts
My cells are fine, very fine actually, so if anyone could help me keep them out of LED flash lamps and such, I would be very thankfull.