[Elecraft] Battery pack not powering K2

[Peter Eijlander (PA0PJE)]

Hello Robin,

10,5 Volts is very low for a 12 V.lead-acid battery. Try to load it with
a lamp or resistor and measure the voltage at the battery again under
load condition. I doubt that all cells in the battery are good. The gel
in these batteries can dry out, which is killing them.

There is also a series diode in the supply-line to prevent damage due to
reverse connection of a power supply that at least has a voltage drop of
0,2 volts. I don't recall on what voltage the K2 will cease to work.

73,
Peter - PA0PJE

Op 10-11-19 om 12:56 schreef oz6abm at qsl.net:
> Hi,
> 
>   
> 
> I hope someone can help me here. I have K2 with the internal battery kit.
> 
> I have used this radio with the battery for many years, but now I have a problem.
> 
> When I power up the radio with only the battery it is dead, no display nothing.
> 
> When I apply a PSU it works fine.
> 
> I have checked all the connections P3 (Aux) and the Int. Battery switch on the back panel is ON.
> 
> Anyway, nothing has changed since it last worked.
> 
> When I check the voltage on the battery terminals it says 10.5V. I get the same reading on the P3 connector, so power is reaching the radio, but the radio is not powering up.
> 
>   
> 
> Any suggestions?
> 
>   
> 
> Thanks
> 
> Robin
> 
> OZ6ABM/5P5R
> 
>   
> 
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