Message -
From: John Payne payn...@comcast.net
To: elecraft@mailman.qth.net
Sent: Monday, July 14, 2014 10:03 AM
Subject: Re: [Elecraft] My KX3 Battery Approach
Unfortunately, those are NOT AA size cells. 18650 cells are much larger.
See http://happypics.zapto.org/displayimage.php?pid=3026
Unfortunately, those are NOT AA size cells. 18650 cells are much larger.
See http://happypics.zapto.org/displayimage.php?pid=3026
73 de W4CWZ
On 7/13/2014 5:58 PM, kb9...@wi.rr.com wrote:
Use a better AA battery (3.7V 4.9AH Li-ion):
http://www.ebay.com/itm/181411959514
12, 2014 12:30 PM
Subject: Re: [Elecraft] My KX3 Battery Approach
Using 8 internal eneloop cells, I measured battery voltage versus current
(as
shown on the KX3 display) during RX and different TX pwr levels, created an
Excel scatter chart and fitted a linear trend line. The result: 1.15 Ohms,
R^2
: [Elecraft] My KX3 Battery Approach
Using 8 internal eneloop cells, I measured battery voltage versus current
(as
shown on the KX3 display) during RX and different TX pwr levels, created an
Excel scatter chart and fitted a linear trend line. The result: 1.15 Ohms,
R^2 = 0.95.
A single eneloop
...@strattonfamily.us
Cc: elecraft@mailman.qth.net
Sent: Sunday, July 13, 2014 6:10 PM
Subject: Re: [Elecraft] My KX3 Battery Approach
The 3.7V rating is its voltage at about 50% state of charge. That type of
Li-ion cell has a fully charged voltage of 4.2V. Four of them would be too
much for a KX3
The problem I have found with AA cell holders of the 10 cell variety is
that there was unacceptable voltage drop under load. I tried this with the
KX1 and was not satisfied. I think it will take a pretty high quality cell
holder to get around that problem, which resides around the contacts and
Using 8 internal eneloop cells, I measured battery voltage versus current (as
shown on the KX3 display) during RX and different TX pwr levels, created an
Excel scatter chart and fitted a linear trend line. The result: 1.15 Ohms,
R^2 = 0.95.
A single eneloop cell has around 0.035 Ohms of internal
While I have a 5 Amp-hr Lithium Ion battery and
use it, and also high-capacity Eneloops inside my
KX3 (with the battery charger option) my preferred
approach is to use ten external Eneloops in a
battery holder made to hold ten AA cells, this
sort of thing:
-
From: Phil Wheeler w...@socal.rr.com
To: k...@yahoogroups.com; Elecraft Reflector Elecraft@mailman.qth.net
Sent: Friday, July 11, 2014 9:04 PM
Subject: [Elecraft] My KX3 Battery Approach
While I have a 5 Amp-hr Lithium Ion battery and use it, and also
high-capacity Eneloops inside my KX3
-battery-box-rk45y
73
David
G3UNA
- Original Message - From: Phil
Wheeler w...@socal.rr.com
To: k...@yahoogroups.com; Elecraft Reflector
Elecraft@mailman.qth.net
Sent: Friday, July 11, 2014 9:04 PM
Subject: [Elecraft] My KX3 Battery Approach
While I have a 5 Amp-hr Lithium Ion
Of Phil
Wheeler
Sent: Friday, July 11, 2014 14:49 PM
To: David Cutter; k...@yahoogroups.com; Elecraft Reflector
Subject: Re: [Elecraft] My KX3 Battery Approach
Right! The flexibility is good, and I have quite a few Eneloops on hand.
Yes, $10 is a bit pricy, David. Those are not exactly what I bought
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil
Wheeler
Sent: Friday, July 11, 2014 14:49 PM
To: David Cutter; k...@yahoogroups.com; Elecraft Reflector
Subject: Re: [Elecraft] My KX3 Battery Approach
Right! The flexibility is good, and I have quite a few
14:49 PM
To: David Cutter; k...@yahoogroups.com; Elecraft Reflector
Subject: Re: [Elecraft] My KX3 Battery Approach
Right! The flexibility is good, and I have quite a few Eneloops on hand.
Yes, $10 is a bit pricy, David. Those are not exactly what I bought;
I just
searched Amazon for a link
Mouser has them, the 10 cell.
Emory WM3M
-Original Message-
From: Doug Person via Elecraft
Sent: Friday, July 11, 2014 9:01 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] My KX3 Battery Approach
You can find the 10-cell on ebay. It does come from China and takes a
few weeks
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