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| Author | New Member From Silicon Valley,, (Read 7593 times) | ||||||||||||||||||
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ga_mueller1
8 MB  Posts: 9 
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on: February 25, 2007, 03:52
Hello, Great site! I've used many of the resources here to help create some XMAS presents last year; I gave 3 5300c-based digital photoframes out for presents. Lots of fun, they run 7.6.1, and had JPEGView to run at startup, and a stripped down system on a flash card. The entire System was only around 7Mb! Fantastic. Anyway, I got guilty about destroying most of the world's stock of 5300c's, so I bought one a couple of weeks ago to "fix up". Anyway, it's a 48/750 (purchased on eBay for $0.99, no joke, but shipping was $11  , running 8.1, works great with a WaveLan Silver to connect, and Communicator 4.8 for email, and IE5 for serious surfing (yuck). I rebuilt the battery pack with 2000mAh NiMH cells, and it runs for 2.5hrs! Anyway, you have it right on, there is much more fun and value at the "trailing edge" of high tech! And BTW, 29.4 on your "CPU Utility".Cheers! |
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wove
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1024 MB Posts: 1363
Reply #1 on: February 27, 2007, 02:54
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Ohhh a 5300c, very nice. I had one when new, and just purcased one at about your price point. Any information about your battery rebuild would be much appreciated. There are many users of OS 7.6 Powerbooks here and many of those old Powerbooks probably have dead batteries. Welcome to System7Today, enjoy. bill
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ga_mueller1
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8 MB Posts: 9
Reply #2 on: February 28, 2007, 05:01
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I used AA NiMH cells, which cost $1/each at our local Fry's electronics (I had to buy 20). The original battery pack was 1950mAh, these were 2000mAh. The pack takes 12. You CAN get 3000mAh AA's, but they are pricey ($2.50/each). But runtime would probably be 4hrs. Anyway, you need to pry open the battery case. I cut a corner where the case is joined with a hacksaw blade, then used a big-assed screwdriver to pry it open. It does not want to come open, and mine cracked, but it will come open. Pry the batteries out, scrape out the gummy adhesive tape, note how they are connected, throw away the fusible element, save the temp sensor and chip which are connected to the contact strip, then hot glue your new pack together in the same config. You may wish to sandpaper the edges of the cells to make soldering easier. Solder then up the same was as the original pack, then break out the tabs inside the original case, otherwise the cells won't fit well. You will need to insulate the fronts of the cells so they don't short on the pack contacts. Check to see if you can get the case fully closed. If it doesn't close, remove some more of the tabs in the case. If it closes, hot glue the cells to the case, and the temp sensor to the cells, then solder up the +/- to the correct points on the connector strip. Confirm that the pack puts out around 15-16V. Put the top of the pack back on. I didn't glue it together yet, but just scotch taped it together. At some point I will Crazyglue it back together. Athough sounding like a PITA, the whole thing took only 1-2 hrs. First run after full charge was 2 hrs. With the screen backlight all the way down, the wireless card in, and the hard drive spindown at 1min, I now get 2.5 hrs. Good luck! George
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dpaanlka
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1024 MB Posts: 1646
Reply #3 on: February 28, 2007, 05:30
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This could make a good article on S7T.
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ga_mueller1
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8 MB Posts: 9
Reply #4 on: February 28, 2007, 06:06
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Quote from: "dpaanlka" This could make a good article on S7T. You're welcome to use it. But it must come with a huge, huge disclaimer that goes along with it. This battery rebuild gone bad could cause burns, start a fire, etc,etc. Even a short with NiMH cells can meltdown your system or start a fire. Not as likely as LiON or LiPoly, but still a possiblity.
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