[Elecraft] K2 Battery Charging System With out Mods?

[TF3KX]

Hi, Bruce:

We can go to great lengths looking for technological perfection.  There are
all kinds of schemes to charge the internal battery of the K2 in "optimal"
ways, as illustrated to the responses to your post.

After going through the same thoughts you are going through I resorted back
to the simple solution:  Adjusted the output voltage of my 12V bench supply
to 14.2V and kept my K2 hooked up to this in my shack.  This ensures that
the internal battery will be at a reasonably high voltage when I unplug the
rig and take it along on a trip.  The energy supply may not be maximized,
and the lifetime of the battery may not end up being optimal either, but if
the battery will serve me well in this way for some 3-5 years I won't
complain.  Perhaps I will try some more efficient / lighter battery
technology at that time.

So far this has worked perfectly and the internal gel cell battery has kept
my K2 running for a total of 15-25 hours, on trips lasting weeks.

73 - Kristinn, TF3KX


w1ujr wrote:
> 
> Hello all,
> 
> Is there a simple off the shelf model of battery charger which I can  
> buy or build that will properly charge the K2 battery?
> I'd prefer not to drill a hole in the rear apron, so I'm looking for a  
> commercial solution, ideally with an adjustable output.
> 
> What have you found that works, or how did you solve your K2 battery  
> dilemma?
> 
> Thanks!
> 
> 
> 73 Bruce W1UJR
> www.w1ujr.net
> 
> 
> 
> 
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