All about the Roland Jupiter-series

-----Original Message-----
From: Brent A. Busby [mailto:brent@...]
Sent: Wednesday, December 13, 2000 2:35 PM
To: analogue@...
Subject: [AH] Assault With A Battery from a Jupiter-8


Since I'm asking around different places, anyone know of a good direct
source for replacement batteries for the JP-8? It seems that after a
rediculously long life of 17 years, mine has finally started to give up.
I didn't even think it would be that old because up until lately it's been
holding patches just fine. But yes, it appears to be a February 1983
antique just like the rest of the machine. Wow.
Anyway, that's been safely desoldered out of there, and now I need
a replacement bad. I'm going to try calling Roland US parts division
today, and also Panasonic (who I believe is the same company as Matsushita
Electric, the name on the side of the battery). But just in case all I
get is lots of babble and "You want a WHAT???" from those folks, has
anybody here ever been through the experience of getting one of these
things for your JP-8 before? Know any good channels to go through?

It's a 3-volt lithium cell, cylindrical, with solder terminal tabs on both
ends. The model number is BR-1/2A. It appears that Panasonic still makes
lithium cylindrical batteries with model numbers similar to that, but
nothing quite the same, or even quite the same size.

Any help is vastly appreciated! I can't live without JP-8. :-)

-----Original Message-----
From: Mark Pulver [mailto:mark@...]
Sent: Wednesday, December 13, 2000 4:47 PM
To: analogue@...
Subject: Re: [AH] Assault With A Battery from a Jupiter-8


Brent A. Busby (07:35 AM 12.13.2000) wrote:

>It's a 3-volt lithium cell, cylindrical, with solder terminal tabs on both
>ends. The model number is BR-1/2A. It appears that Panasonic still makes
>lithium cylindrical batteries with model numbers similar to that, but
>nothing quite the same, or even quite the same size.

The NiCd Lady! :)

http://www.nicdlady.com/cell_pr.htm#lithiums

The Saft TL2150 is a 3v Lithium 1/2A cell. US $6.


Mark

-----Original Message-----
From: Sevo Stille [mailto:sevo@...]
Sent: Wednesday, December 13, 2000 5:15 PM
To: Brent A. Busby
Cc: analogue@...
Subject: Re: [AH] Assault With A Battery from a Jupiter-8


"Brent A. Busby" wrote:

> It's a 3-volt lithium cell, cylindrical, with solder terminal tabs on both
> ends. The model number is BR-1/2A. It appears that Panasonic still makes
> lithium cylindrical batteries with model numbers similar to that, but
> nothing quite the same, or even quite the same size.

Apart from the form factor, any Lithium cell I am aware of would do -
they are all 3V, and the buffer current is extremely small and well
within the margin of even a wrist watch cell. Given that the cell was
soldered in, I'd strongly suggest replacing it with one of these lithium
power blocks used for computers - these have about six inches of cable
attached, and hence it could be put in some safe place off the PCB,
where it poses no danger should it ever corrode and leak.

Sevo

--
Sevo Stille
sevo@...

-----Original Message-----
From: Brent A. Busby [mailto:brent@...]
Sent: Thursday, December 14, 2000 1:17 AM
To: analogue@...
Subject: RE: [AH] Assault With A Battery from a Jupiter-8


Thanks for the help everybody... After talking to the parts people at
Panasonic, I found that the direct modern equivalent to the JP-8 battery
is called a Dantona Industries COMP-94, which I've now got coming to me
for only about $10. Thanks again, and if anyone needs a new battery for a
JP-8, that's what you ask for!