battery backup, etc. for QRO K2?

Posted by Chris Kantarjiev K6DBG on Jul 11, 2007; 7:22pm
URL: http://elecraft.85.s1.nabble.com/battery-backup-etc-for-QRO-K2-tp450109.html

I've been running a QRP K2 for about 18 months now. It has the
KBT2, and I've been powering the home station with a 10A linear
PS that's adjusted to 14.2V, to keep the internal gelcell happy.

Now I'm going to add a KPA100/KAT100 in an EC2 (K2 twins!) and
have to upgrade my power setup. My current thinking is to use
the Alinco DM-330 switching PS for space reasons (my shack
shares space with my office :-)

Since this will require an upgrade in my PowerPole distribution
setup, and because the linear supply will go back out the bench
(leaving some space on the floor), I'm thinking about battery
backup, too. I know that the RigRunner folks make a couple
of battery backup devices

http://www.powerwerx.com/category.asp?CtgID=3580

and I have to admit that I'm tempted to buy instead of build.

But I'd like to understand the tradeoffs here. I want to keep
the system voltage high enough to keep the KBT2's battery happy.
I suppose that I could run the system from a large battery and just
trickle/float the battery from a smaller supply ... but that
seems a lot more complicated (and harder to keep the voltage
up for the KBT2).

What have other people set up along these lines? What website
should I be visiting? Is the "super" powergate really worth
double the price? :-)

73 de chris K6DBG

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