[Elecraft] KBT2 voltage display

[Don Wilhelm]

Daniel,

Indications are that you should raise your input voltage a bit.  SLA
batteries generally want 13.8 volts 'float' voltage at their terminals (but
the exact 'proper' voltage varies with temperature and is only valid for a
fully charged battery).

In addition, there may some slight variability in the drop across the diode
from K2 to K2. You can double check your K2's indication with an external
DVM connected directly to the battery terminals - set that reading for 13.8
volts and then note what is shown on the K2 display, that will be the K2
voltage reading that you should strive for.

73,
Don W3FPR

----- Original Message ----- 

> I'm just curious. I'm charging my KBT2 with exactly 14.0 V, and the
> Voltage/Current display reads 13.3 V. I know there's a voltage drop with
the
> diode. I just want someone to say - your voltage readings are ok.
>
> I ask because the KBT2 manual mentions "13.7 +/- 0.2 V as indicated by the
K2's
> internal voltmeter, which includes the drop across D10". Is this using the
> internal K2 voltmeter probe? or is this using the Voltage/Current Display
that
> I am using?
>