[Elecraft] Operating KX3/KXPA100 on LiPO3 batteries??

[Fred Jensen]

Li-xxx batteries are not really supportive of float charging.  It's real 
common for LiFePO4 and LiPoly packs to have a charging connector 
separate from the discharge leads to the radio, which the charger uses 
to equalize the charge on each cell.  I have 2 LiFePO4 4 Ah packs and a 
charger that operates from 12 V.  I use one while charging the other 
with the charger powered by a 25 W solar panel.  I've discharged and 
re-charged them enough times now that I feel justified in claiming that 
there are no brown electrons left in them and that I'm eligible for the 
"green power bonus" if there is one.

73,

Fred ["Skip"] K6DGW #142
Sparks NV DM09dn
Washoe County

On 7/25/2018 11:39 AM, Phil Hystad via Elecraft wrote:
> Bruce,
>
> I read on-line Amazon question on the battery asking about simultaneously drawing from the battery while charger plugged in.  The answer, from Bioenno themselves, was that this should not be done.  The charger and using the battery should not be done simultaneously.
>
> Is your battery different in that you can charge it while using it?
>
> 73, phil
>
>
>> On Jul 25, 2018, at 11:36 AM, Bruce W2SE <W2SE at QSL.net> wrote:
>>
>> I use KX3 at home barefoot too (SOTA Chaser, mostly QRP).  BLF1206 with charger plugged in.  I had to loop the KX3 DC power cord through a medium sized Type 31 ferrite snap-on core to kill the noise from the Bioenno charger.  With this DIY choke in place, I can't detect any difference between charger plugged in and unplugged (eg  battery only).
>>
>> On 25-Jul-18 14:15, Phil Hystad via Elecraft wrote:
>>> Actually, I see that Bioenne Power supplies a charger along with the 20Ah battery.
>>>
>>>
>>>> On Jul 25, 2018, at 11:12 AM, Phil Hystad via Elecraft <elecraft at mailman.qth.net> <mailto:elecraft at mailman.qth.net> wrote:
>>>>
>>>> Jim,
>>>>
>>>> Thanks to you and the others who replied with useful information.  I will probably get
>>>> one of the batteries, probably buy the Bioenne charger too.
>>>>
>>>> 73, phil
>>>>
>>>>> On Jul 25, 2018, at 11:03 AM, Jim Brown <jim at audiosystemsgroup.com> <mailto:jim at audiosystemsgroup.com> wrote:
>>>>>
>>>>> On 7/25/2018 9:38 AM, Phil Hystad via Elecraft wrote:
>>>>>> Has anyone operated a KX3 with the 100-watt KXPA100 using LiPO3 (or other Li chemistry) batteries.  If so, what was the battery brand, number of cells or AH rating, and performance and at what power levels.
>>>>> Yes, we ran that combo while activating grids CM86 and CM79 using the 20Ah Bioenne Power LiFePO4 batteries. I own one, W6JTI owns two. One of them got us through about 6 hours at CM79 running MSK144 and FT8, using the strategy of not calling CQ. Instead, I was nearby acting as pilot to Ping Jockey and the cluster system.
>>>>>
>>>>> For nearly two years, I've been using a 100Ah Bioenne battery to run a pair of K3s for SO2R. Bionenne caters to the ham market, and is good to deal with.
>>>>>
>>>>> 73, Jim K9YC
>>>>>
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