[Elecraft] [K3} AGM Battery recommendation for K3

[N5GE]

I use a West Mountain Radio Super PWRgate PG40S between my HB 100 Amp
P/S and three server room backup batteries in parallel to power all
of the 13.8V devices in the shack, including all the equipment that
came with wall warts (I cut the P/S's off and use the cable and
plug).

Once I did one of my regular tests of that backup system by turning
the P/S off.  Two weeks later when the voltage dropped low enough to
make the K3 warn me I noticed that I had not turned the P/S back on.
By the way, I never turn my K3 and equipment off.  That means that
the batteries supported my system for two weeks before going low
enough to cause problems.

The West Mountain Radio device is a good swith-over device, although
a little pricey.

Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

On Tue, 27 Nov 2012 22:47:46 -0500, Jim Miller <jim at jtmiller.com>
wrote:

>I've decided I might get a battery for my K3 for occasional operation
>to chase QRM issues. As long as I'm getting it for reception I thought
>I might consider one which would prove useful for transmitting as
>well.
>
>My "shack" is in the living area of our house with hardwood floors. I
>wouldn't be happy with an acid spill there. So I'm looking for battery
>size and type information and what sort of operating time I might
>expect with QRP and 100W levels (and anything in between...).
>
>Also would like some recommendations for practical handling and
>charging to avoid "issues." Charging would be from the AC line. No
>solar planned.
>
>I'm pretty sure an AGM deep cycle battery is what I've seen
>recommended. What else should I look for?
>
>All recommendations welcome.
>
>73
>
>Jim ab3cv
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