[Elecraft] K3-Front panel shut down question.

[Jim Brown]

On 8/18/2011 11:22 AM, Guy Olinger K2AV wrote:
> Some of the commentary seems to be about creating a full run floating
> battery alternate supply.  If you want that, it's one approach, but if all
> you want is orderly shut down, you hardly need go that far.

Actually, this is quite easy and inexpensive to do. I use one of the 
biggest 12V batteries that Costco sells (about $75) and float charge it 
with a little 10A switching power supply that I bought for $10 at a 
hamfest. I've adjusted the float voltage to 14V, and the battery lasts 
for at least 3 years. The key is to carefully set the float voltage so 
that it doesn't overcharge the battery.

73, Jim K9YC