Re: [Elecraft] KX3 Battery Life

[Walter Underwood]

The Eneloop batteries are great. 

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Jun 17, 2017, at 4:50 PM, Tom Field  wrote:
> 
> Thanks Don, Indeed the Low Bat was set at 10. I moved it to 8.5.  And I’m 
> using the Black Enloop Pro batteries.  
> 
> Waiting for FD
> 
> 73
> Tom
> KN6DR
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Re: [Elecraft] KX3 Battery Life

[Don Wilhelm]

Tom,

It sounds like you may not have set the menu BAT MIN to 8.5 volts as 
recommended for NiMH batteries.  The default before BAT LOW is displayed 
is 10 volts.  8 NiMH batteries will discharge quickly to below that 10 
volt level, but the time between 10 volts and 8.5 volts will be much 
greater.


Look at page 36 of the manual for BAT MIN recommndations for several 
different battery types.  The default of 10 volts works well with Gel 
Cells, which of course are external.


73,
Don W3FPR

On 6/17/2017 7:02 PM, Tom Field wrote:

I’ve recently become interested in portable operating with my KX3. I’m using the 
Panasonic Enloop NiMH batteries.  I find that the batteries last for less than 2 
hrs.  Should I expect longer battery life. I just charged them on the external 
Panasonic charge and confirmed post charge voltage >1.3 volts.

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Re: [Elecraft] KX3 Battery Life

[Dominic Baines]

Matt,

Excellent hint.

You'll find you will NOT need one of the after market or Elecraft 
heatsinks either unless already operating in 40'C.


72

Dom
M1KTA

On 02/03/15 19:53, Matt Maguire wrote:

If you use SSB, and power consumption is a concern, you’re better off running 
at 3W, since a more efficient output transformer winding is selected, reducing 
transmit current consumption.  For CW, you can run up to 5W in this 
power-saving mode. You can tell if the hi-Z winding is selected looking at the 
displayed power setting and checking for a dot “.” after the “W”.

--
73 de Matt VK2RQ

On 3 March 2015 at 4:55:53 am, David Ahrendts (davidahren...@me.com) wrote:

A quickie: wanna take it on a hike. Got my wire. Got the ATU. Charging up the 
batteries. Operating SSB QRP @ 5 watts (maybe less), how long would you expect 
the batteries to last? Operating CW same?

David A., KC0XT



David Ahrendts davidahren...@me.com




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Re: [Elecraft] KX3 Battery Life

[Peter Lambert]

Hello David,

I use the KX3 for SOTA.  Typically about an hour of reasonably hectic (ie hi
TX to RX ratio) is involved.  5W SSB.  It consumes about 1/4 of the battery
pack capacity.  For me these are 2.4Ahr enerloop LSD cells.

Definitely no need to carry extra battery weight unless you're going to be
there for a couple of days.

Regards,
Peter VK4JD

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David
Ahrendts
Sent: Tuesday, 3 March 2015 3:55 AM
To: Elecraft Reflector
Subject: [Elecraft] KX3 Battery Life

A quickie: wanna take it on a hike. Got my wire. Got the ATU. Charging up
the batteries. Operating SSB QRP @ 5 watts (maybe less), how long would you
expect the batteries to last? Operating CW same?

David A., KC0XT 



David Ahrendts   davidahren...@me.com   




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delivered to plamb...@qa.com.au

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Re: [Elecraft] KX3 Battery Life

[Fred Jensen]

I don't have a KX3, but using my K2/10 @ 5W on CW, I've managed steady
operating for at least 2 hrs with an A123 4S1P LiFePO4 rated at 3.5 Ah
and I've never depleted the battery.  I believe the KX3 is a bit more
efficient than the K2.  I also believe if you restrict the power to
2.5W, the KX3 uses a more efficient PA output circuit.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
- www.cqp.org

On 3/2/2015 9:55 AM, David Ahrendts wrote:

A quickie: wanna take it on a hike. Got my wire. Got the ATU.
Charging up the batteries. Operating SSB QRP @ 5 watts (maybe less),
how long would you expect the batteries to last? Operating CW same?

David A., KC0XT


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Re: [Elecraft] KX3 Battery Life

[Matt Maguire]

If you use SSB, and power consumption is a concern, you’re better off running 
at 3W, since a more efficient output transformer winding is selected, reducing 
transmit current consumption.  For CW, you can run up to 5W in this 
power-saving mode. You can tell if the hi-Z winding is selected looking at the 
displayed power setting and checking for a dot “.” after the “W”. 

-- 
73 de Matt VK2RQ

On 3 March 2015 at 4:55:53 am, David Ahrendts (davidahren...@me.com) wrote:

A quickie: wanna take it on a hike. Got my wire. Got the ATU. Charging up the 
batteries. Operating SSB QRP @ 5 watts (maybe less), how long would you expect 
the batteries to last? Operating CW same?  

David A., KC0XT  



David Ahrendts davidahren...@me.com  




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Re: [Elecraft] KX3 battery life question...

[Rick Tavan]

It will be huge.  ;-)

Rick N6XI

On Aug 30, 2011, at 2:04 AM, Edward R. Cole kl...@acsalaska.net wrote:

 
 It appears Elecraft is listening to what all us are wanting and 
 trying to give us a versatile little rig.  I hope the order backlog 
 is not too long.
 
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