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nblsavage
November 29th, 2009, 08:46 PM
Goodwill Outlet comes through for me again and I picked up a Mac Portable (M5120) for $4. Of course the lead-acid battery is shot and therefore it won't boot. Any suggestions on how to get this old beastie to boot up?

Bungo Pony
November 30th, 2009, 01:21 PM
The thing won't boot because the battery was connected in series. You could either replace it with a sealed battery, or you could bypass the battery entirely.

I have no clue what the battery looks like, so I can't completely suggest how to do this.

But I must congratulate you on finding a somewhat rare beast. Those machines were expensive, heavy, and didn't sell very well upon release.

alker
December 1st, 2009, 12:21 AM
it's rather easy to repair these batteries: you have to open it (cut it but dont hurt yourself) and replace the internal batteries with a 6,5 volt akku. I get these akkus from an electronic supplier here for around 15$-25$.
Some soldering is required but it is an easy fix. It takes me around 1hour to repair these batteries

applefreak
December 14th, 2009, 10:14 AM
i use 3 cyclon lead batteries
http://www.enersys-emea.com/reserve/english/detail_prod.asp?lang=e&app_code=0&prod_code=2210

http://idisk.mac.com/lefevere/Public/mp_lead_battery.jpg



Portable Macintosh 5120 and 5126
Lead Battery Replacement
http://www.cyberroach.com/portamac/portmac.htm

Alternate Battery for Mac Portable
http://lowendmac.com/pb/portabattery.shtml


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My Portable Will Not Boot Up (http://idisk.mac.com/lefevere/Public/THE_PORTABLE_WILL_NOT_BOOT_UP.pdf)
saved as pdf (dead link)

barythrin
December 14th, 2009, 01:33 PM
Wow what a great find for the price! I passed on a few of those years ago because they didn't come with the power supply and were still $60 at our local goodwill. Never found one for cheap since.

applefreak
December 16th, 2009, 01:42 PM
Portable M5126 backlit (http://idisk.mac.com/lefevere/Public/DSC_8683b.jpg)
started up with adapter Powerbook 100, charging battery

Raven
December 16th, 2009, 03:41 PM
Didn't know Apple made portables so early on.. What Mac OS runs on those? 1? 3? 7? *knows little about Apple*

applefreak
December 16th, 2009, 03:57 PM
first system ( sept 1989)
6.0.4 non-backlit M5120
6.0.7 for the backlit M5126

maximum supported system 7.5.5

the M5126 ( post 6 ) system 7.0.1, Ram 4 MB, HD 40 MB

nblsavage
December 16th, 2009, 04:54 PM
Thanks Applefreak for the battery info. Looks like I've got a new project :)

Raven
December 16th, 2009, 05:10 PM
first system ( sept 1989)
6.0.4 non-backlit M5120
6.0.7 for the backlit M5126

maximum supported system 7.5.5

the M5126 ( post 6 ) system 7.0.1, Ram 4 MB, HD 40 MB

This could run StarCraft! Provided that the RAM is upgradable and it doesn't care if there's a color screen...

Anonymous Freak
December 16th, 2009, 09:51 PM
This could run StarCraft! Provided that the RAM is upgradable and it doesn't care if there's a color screen...

No, it can not run Starcraft. Starcraft requires a PowerPC on the Mac side. Even then, it's slow on an early PowerPC. (Starcraft for Mac came out in 1999, when the G3 was the current, and the G4 just about to release.)