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1. #OLD MAC POWERBOOK G4 PASSWORD RESET HOW TO#
2. #OLD MAC POWERBOOK G4 PASSWORD RESET PLUS#
3. #OLD MAC POWERBOOK G4 PASSWORD RESET SERIES#

I think I probably had a dead PCB in the battery instead of dead cells. Now I need to figure out why my rebuilt battery won't charge, won't power my PB, and shows a uniform 24% charge when installed. The missing battery case top has the retaining tab for the right side of the battery so I have to tape the battery to hold it in place, too, but it is (just barely) doable if you don't mind the Mad Max look. I removed the central pillar and just taped the top of the battery for insulation, leaving off the top of the battery case, and so I was able to squeeze it in. Since the battery was already in rough shape, I decided to make it fit. This thread has been very helpful to me in the past, especially confirming that a mini phono plug can substitute for the 12.1" Al p/s jack - however, I need to add a word of caution for future readers.Īfter reading this thread I ordered 2400mAh 18650 cells from Batteryspace to replace the cells in my PB's battery, and after I had completed the soldering, I realized that the cells I had just assembled would not fit back into the battery housing - the 2400s are significantly larger than the OEM cells. Great power supply link (/qa/qa2001/qa1266.html) though! I've been through that area more times than I care to think about and never spotted that one (at least as far as I can remember!) What a PITA that was!Ĭan I suggest as alternatives looking for either a dead adapter with an intact plug, or source a PowerBook aircraft power cord, those usually sell for $20 or so. Making the plug, I ended up cutting away the base of the stereo plug and fabricating an outer ring which I epoxied around the central part of the plug itself. You face the difficulty of keeping that separate from the grounded outer ring of the jack. Second, 24V will be on the base of the plug which is normally ground on a stereo.

#OLD MAC POWERBOOK G4 PASSWORD RESET PLUS#

Plus it won't make solid connection to the internal jack contacts, so you'll probably have trouble keeping a continuous connection. Here's a couple of problems to be aware of:įirst, without an external sleeve the inner part (the stereo plug) will wobble, with damage possible to the jack. The more pictured the better.īeen there, done that, I built from scratch an adapter to go from old-style PS to new-style PB. This leads me to my last thing - which I failed to do when I was doing this.ĥ) Take pictures of everything. Soldering the tops of batteries without tabs is a pain even using flux and such to help ease the process.Ĥ) Lay everything out on the table when you remove it from the battery the first time. They are out there though I don't have a link handy at the moment.

This will give you a good place to solder the new batteries in with less concern for heat from the soldering iron.ģ) Spend the extra money and buy the batteries with tabs already welded onto them. Do it on a day where you can take as much time as you want to get it done.Ģ) Cut the solder tabs on the old batteries close the the battery leaving as much metal as possible on the existing wires.

#OLD MAC POWERBOOK G4 PASSWORD RESET SERIES#

I've actually done three or four Powerbook 500 series smart batteries in the past so if you don't mind I'll share the info I gained here in case it's useful.ġ) Do the job slowly! It's way to easy to kill your existing battery circuits and internal wiring while doing this. Can I just swap out the current cells for higher capacity cells? Does anyone know where I can get these cells cheaply? Thanks. Hs anybody done this? Is it safe? Will I blow up my PowerBook? Also, Newer Technology now makes these batteries which claim to have higher capacity. However they're only $13 for a pair, which would give me a new battery for under $60, half the price of replacement Pismo batteries. I have seen this company selling them in pairs, in a pre-fabricated casing that I would need to break open. I've been having trouble actually finding the batteries sold individually. The Pismo pack actually looks easier to do since the soldering looks simpler (although I am not very good with a soldering iron).

#OLD MAC POWERBOOK G4 PASSWORD RESET HOW TO#

So far I've found these directions on how to do the same for a Sony battery pack. So I've been looking around these batteries online. On google I found these directions on how to disassemble the battery.

I would really like to get a working battery as cheaply as possible. The computer has been tied to my desk now for a year, which is very frustrating. I originally posted this over at MacNN but this is probably a better place.