[Elecraft] Battery K3 not transmitting anymore

[myles landstein]

Maybe someone  smarter than I can  address your  battery   requirement.

In order  to   calculate   the required  times  for  charging  and   
'floating'  the battery we  need  to know a  few  parameters:

A) make/model of the battery,  spec's vary  from  manufacture  even   
for  similar  types (agm/gell)  etc.
B) Average  temp of the battery  room.
C) Often overlooked  is the length  and gauge  of the wire  to the  
battery (do you have a fuse inline recommended but  adds  
resistance   ?)  as  even a  small amount of   resistance  will effect  
change the volts/amps   at the battery terminals you need  to  
compensate for this.
D) Once  you have  those  parameters   set   you should be  able to    
calculate  the   charge  rates,  the float  rates  at a minimum.

Seems  every one  has a different  opinion as to how best  to   charge/ 
float  and  other things  I always like to start with the manufactures  
spec sheets.

You might  want to try   a  product like a  superpower gate   I have a  
few  and they work  great  as batteries  are  rather  expensive  and  
not taking care of them properly   will mean they either won't  be   
me  fully  ready for use , or worse  have their  life   reduced.

or  at least have a  4 stage   'charger'  handy  ,  if you happen to  
have a  Astron,  there  as  some articles  around the web   as to how  
to modify  them  to  interface w/a battery.

What did I forget  to mention?



Best of luck
Myles
N2EHG






On Jun 7, 2009, at 3:57 PM, Ralph Tyrrell wrote:

>
> I am using an Alinco DM-330M power supply. Across the output of the  
> power supply I have a 26 AH battery. If the AC power quits I have  
> many hours to shut down the K3.
>
> I have the output of the power supply set to 13.8 V. Should it be  
> slightly higher? How much?
>
> Sometimes I do not even turn on the power supply when I get on the  
> air.
> I keep looking for a power outage, less QRM, QRN.
>
> 73, Ty, W1TF (GA), K3 # 696
>
>
>
>
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Myles Landstein
myles.landstein at gmail.com
please note my   new email address
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