[Elecraft] KBT2

[Don Brown]

Hi

If the K2 is indicating 13.8 volts then the power supply may be outputting
14.0+ volts. The internal meter in the K2 always reads a little low because
of the reverse voltage blocking diode in the power circuit. You need to
measure the supply with an external DVM and set the voltage to 14.0 volts to
keep the internal battery topped off. The Astron is a good supply but I
don't like supplies without external voltage adjusts. The Astron should have
an internal adjustment pot if you can find it

Don Brown
KS5NDB


----- Original Message -----
From: "Richard Lim" <richlim11@yahoo.com>
To: "Elecraft" <elecraft@mailman.qth.net>
Sent: Saturday, April 19, 2003 8:01 AM
Subject: [Elecraft] KBT2


> Question to all the K2 Experts on the group.  I recently purchased the
KBT2
> option for my K2, but am reluctant to install it.  The manual states that
a
> voltage of 14.0V must be applied during trickle charge, lest damage is
done
> to the SLA. I have an Aston SS30M switching supply which puts out exactly
> 13.8v on the K2 internal DVM, it has no options to increase voltage.  What
> have other folk on the list done to get around this issue?  I have a
"Smart
> Charger" from A&A Engineering, was thinking about putting a connector in
one
> of the tranverter holes to connect the charger to the battery directly, is
> this safe? Thanks.
> Rich
> KQ9L