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devel / comp.sys.acorn.hardware / Re: RPC battery.

Re: RPC battery.

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From: naitsabes@freenet.de (Sebastian Barthel)
Newsgroups: comp.sys.acorn.hardware
Subject: Re: RPC battery.
Date: Sat, 5 Jun 2021 12:37:05 -0000 (UTC)
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by: Sebastian Barthel - Sat, 5 Jun 2021 12:37 UTC

Am Wed, 05 May 2021 21:14:57 +0100 schrieb Dave:

> 'Wunce upon a tyme...' There was an illustrated guide/howto on Bernard
> Veasey's bapfish website

https://www.bapfish.org.uk/cmos.htm

and - until now - it stands the test of time.

For the "original oriented" user, there is also a NiMH replacement
Battery, wich is intended by Varta to replace the old batteries in place.
It's called

Varta CP 300H SLF

<https://www.voelkner.de/products/1109/Varta-CP-300H-SLF-Knopfzellen-
Akku-300H-NiMH-300-mAh-1.2V-1St..html>

( website for datasheets (UK) )

But probably its a much better idea to separate the battery from the
mainboard.

If Your battery has signs of leakage, its unavoidable to remove the
remnants from the mainboard. This is done by bathing this part of the
board in vinegard (2%-5%) and wash it twice with de-ionised water
afterwards. If its (really) dried it should be fit for another 125 years
or so.

Eventually it could be a good idea to take a photo of this part of the
board and show it to the people here or in the forum at iconbar or at
stardot.org.uk

If the mainboard is defected then the CJE replacements are very fine and
much easier to install, then a complete rearrangement and rebuilding of
the SMD structures in the area of the realtime clock chip. And probably
'cheaper' - but this depends.

Re: RPC battery.

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From: Spambin@argonet.co.uk (Stuart)
Subject: Re: RPC battery.
Newsgroups: comp.sys.acorn.hardware
Date: Sun, 06 Jun 2021 11:22:47 +0100
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by: Stuart - Sun, 6 Jun 2021 10:22 UTC

In article <s9fr5h$adf$1@solani.org>,
Sebastian Barthel <naitsabes@freenet.de> wrote:

> But probably its a much better idea to separate the battery from the
> mainboard.

Everytime.

--
Stuart Winsor

Tools With A Mission
sending tools across the world
http://www.twam.co.uk/

Re: RPC battery.

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From: dave@triffid.co.uk (Dave)
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Subject: Re: RPC battery.
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by: Dave - Sun, 6 Jun 2021 17:24 UTC

In article <593848ae87Spambin@argonet.co.uk>,
Stuart <Spambin@argonet.co.uk> wrote:
> In article <s9fr5h$adf$1@solani.org>,
> Sebastian Barthel <naitsabes@freenet.de> wrote:

> > But probably its a much better idea to separate the battery from the
> > mainboard.

> Everytime.

At least on the Other side, on my Win PCs the CMOS batteries can just be
popped out of the holder and replaced, no soldering involved. :-)

Done that a few times over the years...

Dave

Dave Triffid

Subject	Author
Re: RPC battery.	Sebastian Barthel
Re: RPC battery.	Stuart
Re: RPC battery.	Dave