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Dead pram battery? Try this.
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pentium



Joined: 23 Jun 2006
Posts: 1148
Location: Kamloops, BC

PostPosted: Sun Jan 28, 2007 10:56 pm    Post subject: Dead pram battery? Try this. Reply with quote

Okay, I don't know of this is already commonly known or something new.
Anyways, my quadra 660AV lost it's pram battery years ago.
Today I was really bored and my eyes caught on my quadra which was sitting on my desk doing nothing.
Using two AA batteries, tin foil, steel wool, copper wire and duct tape I successfully managed to make a crude pram battery that works and preserves the pram when the system is off.
I'll make this offical once I find how long the battery lasts.
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-NeXT 68040 Cube with NS 3.3 and 64Mb ram
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pentium



Joined: 23 Jun 2006
Posts: 1148
Location: Kamloops, BC

PostPosted: Tue Jan 30, 2007 5:46 pm    Post subject: Reply with quote

NOTE:
Be positive your leads will not come loose.
A quadra 660AV is real annoying to reconfigure when you are using monitor settings stored in pram.
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itomato



Joined: 27 Dec 2005
Posts: 302
Location: Santa Cruz, CA

PostPosted: Wed Jan 31, 2007 10:21 pm    Post subject: Reply with quote

It might be worth the few Dollars, Euro, Bucks, whatever to invest in a LS-14250 3.6v lithium battery..

This battery will also work in a NeXT. There are equivalent part numbers in any battery cross-reference guide.

Might be cheaper than replacing the 660..

Are you running A/UX on it?
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pentium



Joined: 23 Jun 2006
Posts: 1148
Location: Kamloops, BC

PostPosted: Thu Feb 01, 2007 11:09 am    Post subject: Reply with quote

nope. no A/UX Crying or Very sad
I have a tape copy for a IIx or IIfx but I don't have either system and the tape drive is still being fitted for a new roller after the last one turned to sludge,
Quote:

PostPosted: Wed Jan 31, 2007 11:21 pm Post subject:
It might be worth the few Dollars, Euro, Bucks, whatever to invest in a LS-14250 3.6v lithium battery..

Some people (like me) are poor folk and have a huge supply of unused AA batteries. Why buy when you can make to with what you have? Laughing
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applefreak



Joined: 09 Oct 2006
Posts: 83
Location: Belgium

PostPosted: Fri Mar 02, 2007 5:45 pm    Post subject: Reply with quote

pentium wrote:
nope. no A/UX Crying or Very sad
I have a tape copy for a IIx or IIfx but I don't have either system

A/UX
http://www.aux-penelope.com/downloads.htm

early mac systems
http://members.tripod.com/elfen_magix/VMSsoftware.html

http://www.info.apple.com/support/oldersoftwarelist.html

http://download.info.apple.com/Apple_Support_Area/Apple_Software_Updates/English-North_American/Macintosh/System/
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applefreak



Joined: 09 Oct 2006
Posts: 83
Location: Belgium

PostPosted: Fri Mar 02, 2007 5:54 pm    Post subject: Reply with quote

pentium wrote:
A quadra 660AV is real annoying to reconfigure when you are using monitor settings stored in pram.

monitor settings of mac's are always stored in pram

(re)install a system on a quadra 660AV is as easy it can be using a external SCSI HD with the appropriate system on it
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pentium



Joined: 23 Jun 2006
Posts: 1148
Location: Kamloops, BC

PostPosted: Fri Mar 02, 2007 8:36 pm    Post subject: Reply with quote

Thanks for the links but I am going way back to 1.1 and I would prefer to get the genuine media and books (I got in big trouble for distributing older copies of IRIX because I thought that they were discontinued and were safe to copy).
As for the quadra...
It's at the bottom of a stack of systems and it's monitor is my camera monitor. When the pram goes, I have to pull a whole bunch of systems to get the cover off and then find an apple monitor so I can reconfigure the video output again.
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pentium



Joined: 23 Jun 2006
Posts: 1148
Location: Kamloops, BC

PostPosted: Sun May 13, 2007 10:03 am    Post subject: Reply with quote

Many months later and the batteries are still keeping the system alive,
I got a mac II in a few weeks ago with a dead battery (so dead the polarity had reversed) and thus could not turn on. Two short alligator leads and two AA batteries was all that was needed to jumpstart the system.
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da9000



Joined: 30 Sep 2006
Posts: 387
Location: Silicon Valley

PostPosted: Mon May 14, 2007 2:06 am    Post subject: Reply with quote

applefreak wrote:

A/UX
http://www.aux-penelope.com/downloads.htm


Thanks so much for the links Applefreak!! Now, one day, my old Macs can try something new :)

@Pentium:
I've got to see the jerry-rig battery contraption you made! Smile Got any photos?
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pentium



Joined: 23 Jun 2006
Posts: 1148
Location: Kamloops, BC

PostPosted: Sat May 19, 2007 6:32 pm    Post subject: Reply with quote

Photos?
Okay.


^Two AA batteries connected together with duct tape and tinfoil and wires marked for their respective polarity.


^Battery installed in an LC III. Just wrap the both wires coming from your battery around their respective battery terminals on the case. Don't make it loose or shaking the case will cuase a flakey connection.


^ If you are in a rush and a permanant battery is not needed, using two alligator lines and two AA batteries, you can jumpstart those macs who need a battery to just turn on. Very Happy
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da9000



Joined: 30 Sep 2006
Posts: 387
Location: Silicon Valley

PostPosted: Sat May 19, 2007 8:11 pm    Post subject: Reply with quote

Hehehe, cool Very Happy Although I hate the silver tape. I prefer using masking tape for my jerry-riggin' :)

Maybe use some superglue/epoxy to make it more rigid? :p
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pentium



Joined: 23 Jun 2006
Posts: 1148
Location: Kamloops, BC

PostPosted: Sat May 19, 2007 8:53 pm    Post subject: Reply with quote

Did you just imply you dislike duct tape?
FYI, Duct tape is the second most used staple (redbull being first to aid in those long nights) in the home network world. There is not many computers in my house that don't have duct tape somewhere on them. Laughing
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da9000



Joined: 30 Sep 2006
Posts: 387
Location: Silicon Valley

PostPosted: Mon May 21, 2007 4:46 am    Post subject: Reply with quote

Yes, I did!

It's crappy, and here's why:

Even though very strong and with great tensile margins, it's hard to cut without a sharp instrument, and when you're jerry-rigging you most likely don't have one on you! While with masking tape, you just pull on one side and rip it. It usually rips cleanly with a straight-edge, as well. Sure, you can use your teeth, but one day you'll probably have one stuck to the duct tape itself :)

Yet another reason is that as it ages, the adhesive becomes a sticky runny guey substance and it's really hard to get off of things, and worse, once you touch it you become all sticky yourself. Too many cables exhibit this "disease" :)

Some masking tapes have this problem too, but not all.
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Jenne



Joined: 06 May 2006
Posts: 338
Location: Switzerland

PostPosted: Mon May 21, 2007 5:08 am    Post subject: Reply with quote

da9000 wrote:
...it's hard to cut without a sharp instrument, and when you're jerry-rigging you most likely don't have one on you!


This is why I always have one of these around:

http://www.victorinox.com/index.cfm?site=victorinox.ch&page=350&lang=E

And in case I'm needed as life supporter I always have one of these around:

http://www.victorinox.com/index.cfm?site=victorinox.ch&page=491&lang=E

da9000 wrote:
Yet another reason is that as it ages, the adhesive becomes a sticky runny guey substance and it's really hard to get off of things, and worse, once you touch it you become all sticky yourself. Too many cables exhibit this "disease" Smile


Absolutly true. I always use other materials if possible to make constructions like these and in case there is not enough space inside a computer I tend to use these hot glue sticks... Risky business sometimes...

J
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da9000



Joined: 30 Sep 2006
Posts: 387
Location: Silicon Valley

PostPosted: Mon May 21, 2007 5:17 am    Post subject: Reply with quote

Jenne wrote:

This is why I always have one of these around:
http://www.victorinox.com/index.cfm?site=victorinox.ch&page=350&lang=E
And in case I'm needed as life supporter I always have one of these around:
http://www.victorinox.com/index.cfm?site=victorinox.ch&page=491&lang=E


WOW! Those are impressive, especially the "life support" one Very Happy LOL!

I've been stuck with a dinky one from the 80's, and the problem is that I _always_ forget to have it on me/with me :/

Jenne wrote:

Absolutly true. I always use other materials if possible to make constructions like these and in case there is not enough space inside a computer I tend to use these hot glue sticks... Risky business sometimes...


Yeah, I'm a hot glue guy since the day I discovered them Smile Much much cleaner for these kinds of jobs, and even though it's hot, I wouldn't call it risky, unless you try to use it on your eyes or something Very Happy
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