[Elecraft] KXBC3 charging

k7sss at aol.com k7sss at aol.com
Sun Jan 27 15:10:09 EST 2013


Hi,
I believe your PS reading is too low. The PS reading on the KX3 should be  
at least 13.8 volts. There is a polarity diode so your ext power supply 
should  be 14+ volts.
At least this what my KX3 needs to charge.
73
Jim H  K7SSS
 
 
In a message dated 1/27/2013 11:59:51 A.M. Pacific Standard Time,  
ve3wdm at hotmail.com writes:


Good  afternoon all, I installed the KXBC3 in my KX3 last night and it had 
no error  messages or problems.....up until now.
Here is what I did and what is  happening.
1. Batteries that are installed are Ansmann 2850 MaH  NiMH  brand new min 
charge on them if any. 
2. Put time on KX3 for 16 hours of  charge time and left the Astron power 
supply for full 16 hours.
3. In the  morning after charge time tried to turn KX3 on with just battery 
power. It  would not and found out needed to lower min voltage from 10v to 
8.5v. 
4.  After doing this the rig came on and was fine on battery power. 
5. Took  rig to the park this morning and it failed to start again. Double 
checked at  home to make sure the new min volt setting saved and it did. I 
then moved the  min 
setting to the lowest value which was 8.2 volts.
6. On the display  I am getting the following now PS. 13.6 volts (not sure 
way that as voltage on  my Fluke meter at the Jack before it goes into the 
KX3 reads 13.8v)
BT is reading 8.8v but is is fluctuating from 8.1v to 8.8v at  times.
Now even with an internal battery reading of 8.8 or a little less  the rig 
should still turn on?? The only other thing I can think if is the 2850  MaH 
batteries need more than 16 hours of charge  time?
Mike
VE3WDM



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