Totally agree with Chucks comment I have opened many system that have been in service at least 5 years virtually no evidence of corrosion. I have however opened system that do not manage the batteries correctly and they are a mess. But we really are drifting away from the main thread. Just want to turn the 5370 off at the end of the day and back on the next. No think-um. Regards Paul
On Thu, Feb 27, 2014 at 4:26 PM, Chuck Harris <cfhar...@erols.com> wrote: > I have worked on lots of equipment that was sealed with > a SLA inside, and I have never seen any sign of corrosion. > Only times I have seen a problem is in the case of UPS's that > were left discharged in unheated warehouses... the electrolyte > froze and the battery cases bulged greatly, but still no leakage. > > -Chuck Harris > > > Dr. David Kirkby wrote: > >> On 27 February 2014 17:31, Chuck Harris <cfhar...@erols.com> wrote: >> >>> Backup batteries don't make me queasy. The easiest, >>> cheapest backup battery would be a small 6V 3AH sealed >>> lead acid battery. It is trivial to make a good float >>> charger using a 3 terminal regulator and a diode, and >>> they do not leak, vent, or anything problematic. The >>> little 6V 3AH packs are used in emergency lighting, so >>> they are readily available. Float them at 6.9V, and >>> they will last at least 5 years. >>> >> >> I thought there was an issue with even "sealed" lead acids of them >> emitting small amounts of sulfuric acid, which is not great in a bit >> of test equipment. >> >> >> >> Dave >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> and follow the instructions there. >> >> _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.