[Elecraft] K1 battery recommendations?

[Doug Person]

I bought two 12v lithium-ion packs off ebay.  They have built-in charge 
controllers and can accept practically any 12v input.  The smaller one 
is something like 3amp/hr and the larger one is maybe 7amp/hr.  The 
smaller one will keep a K1 or KX1 on the air for many hours.  The larger 
one handles the K2/10 and the KX3 for many hours.  I also use them to 
power my auto-tracking telescopes.  They are pretty small and light for 
the amount of power they hold.  Even have on/off switches.  For larger 
power needs, I bought a garden tractor battery on Wal-Mart for $25.  I 
have had enough juice to run 100 watts in the field for an entire day 
with enough left to run a telescope for 4 or 5 hours.  To make an even 
nicer package, I found some plastic battery boxes on Amazon for $9 that 
encase the battery and have nice carry strap.  I mounted a PowerPole 
distribution strip on the top with strong double-sided tape.  I have a 
Duracell charger/maintainer I bought for a few bucks from a clearance 
shelf somewhere that keeps the battery ready to go.

I'm not familiar with the R/C batteries  But they sound great. I'll have 
to find one.

73, Doug K0DXV

On 5/15/2013 12:12 PM, EricJ wrote:
> I use the 3-cell lipo batteries that I use for my R/C planes. They are 
> small (~1x1.5x4"), 11.1v @ 30A! I've run my K1 or KX1 for nearly a 
> week on a single charge, operating as much as I cared to. R/C use 
> demands lots of current for a relatively short flight of 10-15 
> minutes. When they no longer deliver a long enough flight, I retire 
> them to ham radio use where they seem to last forever and the 
> relatively modest current draw.
>
> Eric
>
> On 5/15/2013 10:57 AM, Mike Markowski wrote:
>> For those of you who operate portable regularly, what capacity gel 
>> cell and do you recommend for K1? Any particular brands of gel cell 
>> and charger?
>>
>> Weight is not a big issue.  I won't be hiking, just trips to parks, 
>> qrp Field Day, as well as home use during power outages.
>>
>> Tnx es 73!
>> Mike ab3ap
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