>> Dear Duo People, >> >> I would like to replace the cells in the my batteries...Type 3, M1499. I >am testing the cells to see which need to be replaced or should I do them >all? Where do I buy new cells in the US? Any suggestions appreciated. >Thank you. Marcia Doser >> I've been fiddling around with the different duo battery packs and discovered the following things: The type I battery packs use AA batteries arranged in rows. One can easily remove these existing cells, put in copper spring contacts and replace them with pairs of cells connected end to end. the original config is five on each side with a center divider. If you remove the center divder and trim the excess plastic for the rather useless indicator switch, you'll have enough space to put in strips of suitably formed copper spring steel. ===|=== original |======| ====== pair of cells joined end to end with shrink tubing. ===|=== |======| ===|=== |======| ===|=== |======| ===|=== |======| divider spring contacts The type IIIs are a bit more difficult. These packs use 4/5 cells which are slightly larger in diameter than AA cells. Obviously this is an afterthought. The case plastics in the type III have been so thinned that in some areas it really is just the label that covers the pack. It is more difficult to re-jig this thing because the cells are not arranged in rows, but in columns with one row on top and its an extremely tight fit. What I've been able to do is bring out the wires (and the heat sensors, but this really is optional) and have a cellpack of 10 NiMH C cells in the back pocket of a wetsuit. ======== Oh, and a question for the list: What is the largest Memory module that will work on a Duo 250. I don't mean the largest that it will recognize, but the largest that will work. I intend to upgrade my Duo 250 to a 2300c in the meantime, I need to upgrade the memory from 12 MB to the largest useable module, which I will then transfer to a 2300c once I have the funds to upgrade to that. If I can get a 48 MB mem module and use it in my 250 (even if it will recognize only 24 or whatever), pending its future transfer to a 2300c, that would be ideal. ---------- Duo/2400 List, The friendliest place on the Net! A listserv for users and fans of Mac subportables. FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml> Be sure to visit Mac2400! <http://www.sineware.com/mac2400> XRouter | Share your DSL or cable modem between multiple computers! Dr. Bott | Now $199.99 <http://www.drbott.com/prod/MIH120.html> PowerBook Guy is | Click here! Everything PowerBook! | http://www.powerbookguy.com Midwest Mac Parts ][ <http://www.midwestmac.com> After-market parts for Macs. ][ 888-356-1104 ][ MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879! Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com>
