[Elecraft] KXBC3 says it's not installed.

[Mike Weir]

I have had the KXBC3 installed for some time now in the KX3. I have not been able to read the voltage reading in VFO B for about 2 weeks now. Just thought it was a menu setting and was going to look into it later. Today is field day and the internal batteries were charged last night. I now wanted to get the voltage reading up on VFO B. The rig works on the internal batteries but when I check the menu BAT CHG the message I get is not inST. If I try to change it to installed I am not able to do that.....not sure what is up here. 
Mike
VE3WDM