Forum Discussion
msiminoff
Oct 23, 2013Explorer II
bigfootford wrote:
Over the years of testing batteries and converters I have encountered 2 bad battery cutoff switches...
Yes, this is a good point and an interesting topic!
It may be the case that some battery disconnects are so poorly built that they cannot provide a low current connection, but I suspect that there are also a lot of 'em out there that have been damaged due to the arcing (and resulting pitting & carbon build-up) that occurs when the contacts are initially closed. This would be especially true for people (like me) who have large inverters with capacitors that get charged every time the power disconnect switch is turned on.
To prevent unnecessary wear on my battery disconnect switches and on my inverter too, I installed "pre-charge" button that allows the cap's in the inverter to charge slowly and (theoretically) eliminates arcing of the switch contacts.
-Mark
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