You can't use just 1 battery. The APC units want to see 24vdc, so you
need two batteries running in series.
It works perfectly, as I have 20+ remote locations running off two gel
type batteries. Make sure you install some type of a fuse on the
positive side of the connection.
Mark Nash - Lists wrote:
I believe I remember some discussion on this list on connecting an
external battery to an APC UPS. I'm in the middle of doing it right
now and am having problems. The UPS just beep continuously with the
'bad battery' light on. I'm using a Lifeline deep cycle battery. Any
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