[Elecraft] Another Battery Question

[Charles Greene]

George,

II don't know about the Astron power supplies.  You need to remove the 
cover and see if there is a screw driver adjustment for voltage.  Maybe 
someone on the reflector knows; this was discussed a few years ago.  I 
currently am using a RS 6 amp PS to float the old car battery at 13.8 volts 
and it does not have any adjustment.  I have a Diamond 40 A power supply 
with a knob on the front that adjusts the voltage, but I am not using it to 
float the battery.  The idea of the battery is to use it for high current 
on transmit and float it to keep it charged.  It does go down to 11 -11.7 
volts after a extended period of operation.

73,  Chas, W1CG

At 08:43 AM 7/16/2005, you wrote:
>Hi
>So are you connecting the 14 volt supply to
>The power connector or connecting in some other way (direct to the battery)
>Is there an easy way to boost the voltage on
>any of the astron power supplies?
>I have several and can dedicate one to
>The k2
>
>George Ne2i
>
>-----Original Message-----
>     From: "Charles Greene"<crgreene at cox.net>
>     Sent: 7/16/05 8:25:35 AM
>     To: "thom2 at att.net"<thom2 at att.net>, "Elecraft 
> List"<elecraft at mailman.qth.net>
>     Subject: Re: [Elecraft] Another Battery Question
>
>     Tom,
>
>     If you can adjust your power supply to 14.0 volts, it should work a 
> little
>     better.  I bought my K2 battery with the K2 in 1999 (S/N 462), and it 
> still
>     is as good as new.  I also bought a Power Sonic 0.5 amp automatic 
> charger,
>     and it floats the battery all the time.  It charges the battery at a
>     constant current until 14.4 volts is reached, then maintains a constant
>     voltage until the battery is charged as sensed by the current 
> decreasing to
>     a small value, then floats the battery at about 13.8 volts.  My 
> perception
>     is that if the battery is not  topped off at 14.4 volts it never is 
> fully
>     charged, but it may reach full charge if floated at 13.8 volts
>     constantly.  It just takes longer to reach full charge.
>
>     73,  Chas, W1CG
>
>     At 12:56 PM 7/15/2005, you wrote:
>     >Hi all,
>     >
>     >   I have a basic K2 (s/n 1103) without the 100 amp.  I also have the
>     > Elecraft internal battery (KBT2), which I use in the field. At home 
> the
>     > K2 is connected to a 13 volt power supply which, of course, charges 
> the
>     > battery while I'm operating.
>     >
>     >   Unfortunately life will be getting in the way of operating over the
>     > next several months and I was wondering if I should be concerned about
>     > causing any permanent damage to the K2 battery while it is not getting
>     > charged. I'd appreciate any thoughts on this.
>     >
>     >
>     >   I will be around and can turn on the PS to charge the battery 
> from time
>     > to time (how long and how often?), necessary.
>     >
>     >Thanks
>     >Tom, WB2QDG
>     >k2 1103
>     >
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