KX2 battery issue

[Bryan Brauer-2]

I noticed today that while operating my KX2 with the original equipment
Tenergy 10.8V battery, the transmit power folded back from 10W to 5W each
time I keyed the microphone. The battery is fully charged.  It does not
happen with the 11.1V unbranded replacement battery that I also purchased
from Elecraft.  Could the Tenergy battery be developing a higher than
normal internal resistance?

73,
AI6B

*Bryan B. Brauer*
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[Elecraft mailing list]

Bryan,How old is the KX2? Batteries do wear out after several years of use. It varies on usage and charging.73Jim HK7SSS
In a message dated 9/16/2019 12:58:56 PM Pacific Standard Time, [hidden email] writes:

I noticed today that while operating my KX2 with the original equipmentTenergy 10.8V battery, the transmit power folded back from 10W to 5W eachtime I keyed the microphone. The battery is fully charged.  It does nothappen with the 11.1V unbranded replacement battery that I also purchasedfrom Elecraft.  Could the Tenergy battery be developing a higher thannormal internal resistance?
73,AI6B
*Bryan B. Brauer*______________________________________________________________Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:[hidden email]
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[Elecraft mailing list]

Bryan,
My KX2 is a early model s/n 02xx and I'm still using the original battery. The only mod I've done is the 2nd harmonic for the tx.My battery works fine.
73Jim HK7SSS
In a message dated 9/16/2019 5:21:10 PM Pacific Standard Time, [hidden email] writes:

Thanks for the reply.  The battery is as old as the KX2.  Maybe 6 years???
I noticed that Elecraft has moved away from Tenergy batteries.  Are you aware of any issues?
AI6B
Bryan B. Brauer
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[Mike Morrow-3]

> The battery is as old as the KX2.  Maybe 6 years???
>
> AI6B
> Bryan B. Brauer

Not likely.

Sales of the KX2 and accessories did not begin until May 2016.

Mike / KK5F
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