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
Original Message - From: "John W2XS" <[EMAIL PROTECTED]>
To:
Sent: Friday, September 26, 2008 9:17 PM
Subject: Re: [Elecraft] K2 Battery Charging System With out Mods?
I use Don's system described below in #2) with the A&A charger and
recommend
it. It keeps the K
In a recent message, Tom McCulloch <[EMAIL PROTECTED]> wrote ...
For us more casual users of a charger does anyone know of site that
might have a schematic for a homebrew charger that accomplishes the
same things as is being discussed here?
I can thoroughly recommend the SLA smart charger desc
Tom - Figure 6 in this paper on the NorCal website is a schematic for
a simple dual mode charger that can be made with commonly available
parts.
< http://www.norcalqrp.org/files/Batteries_and_Charging_Systems_KK6MC_whitepaper.pdf
>
I gave the paper a couple of years ago at Pacificon. - Dr
Tom,
The charger that the A & A Engineering Smartcharger is based on appears
in my 1994 ARRL Handbook at 27-16. It claims to be an update from the
original article by Warren Dion N1BBH which appeared in June 1987 QST.
It uses the Unitrode UC3906/UC2906 charge controller.
73,
Don W3FPR
Tom M
'm a cheapskate :) .
Thanks
Tom
WB2QDG
K2# 1103
- Original Message -
From: "John W2XS" <[EMAIL PROTECTED]>
To:
Sent: Friday, September 26, 2008 9:17 PM
Subject: Re: [Elecraft] K2 Battery Charging System With out Mods?
I use Don's system described below i
I use Don's system described below in #2) with the A&A charger and recommend
it. It keeps the K2's battery healthy, and I also use it for other gel-cell
batteries around the shack. Plus, when out in the field, the added power
jack on the back of tyhe K2 makes a convenient spot to connect an analog
I have used the Battery Tender as well, the smaller one for the K2 and a
larger one for external batteries.
You can't use the existing K2 power jack to charge unless you remove some
components, as because of the voltage drop, the smart charger will be
outwitted and overcharge the battery. So, at
Hi Bruce,
I do not have the battery pack in my K2 however for years
I have been using these chargers for various
Gel cells and small lead acid batteries:
http://batterytender.com/selection_guide.php
The Plus model at $60 is a 4 step charger for gel cells,
and oth
Bruce,
The answer is yes. There are several choices, but here are two basic ones.
1) Use a power supply that you can adjust upward to the 13.1 to 14.3
volt range to power the K2. The internal battery will charge, but it
will take a long time to come to a full capacity charge.
2) Make a direct
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 work
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