7 Mar
2014
7 Mar
'14
5:41 a.m.
On 03/06/2014 05:43 PM, Mark J. Blair wrote:
If folks are concerned about battery leakage, then why
don't you just place the battery inside a plastic box mounted remotely inside the
cabinet (or even outside of it) and wire it over to the circuit card? Then you can use
SRAM with no write cycle limit, without any risk of the battery leaking onto the circuit
card or into the backplane.
Its a lithium coin cell. Has anyone ever seen one leak, ever?
I will say here and now that I've replaced at least 30 of them in
various PCs, Mobile radios,
Amateur radios, and can say that while in most cases they go dead far
sooner than expected
(4-6years vs expected 7-10) I have never seen one leak.
If battery leakage were a worry there are two solutions, remove it when
not in use as
likely you have it sitting far too long anyway. Or attach two leads and
remote it.
Its not a problem. IF you have a PDP-8 keeping the power supply happy and
various other issues like having enough core to do anything is more of
an issue.
Me I did this twice, once using 2102s without backup as a car battery
would be needed for
more than a few hours. The second time I used 61256 cmos with a
battery. Removed all
my core to safe dry storage case and run on the ram. That saves 6 slot
spaces
(core is triple thick) and I can run easily with two slower quieter fans
rather than the
full load of noisy (its an 8f).
Allison