[Elecraft] KX3 Suggested External Battery

[Jeff Herr]

i see people confusing Lipo with LifePo4

two different chemistries.

would you not agree that one benefit of Lipo 14.6 batteries is their voltage
being above the 13.8 spec?



-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Don
Wilhelm
Sent: Monday, April 25, 2016 17:26 PM
To: TFJM; elecraft at mailman.qth.net
Subject: Re: [Elecraft] KX3 Suggested External Battery

Tom,

Consider cost vs. need and your intended power level.
If you are backpacking in, then weight is a consideration, so LiPo and
LiFePO4 batteries are to be preferred.  IMHO, LiFePo4 are preferred because
they have terminal voltages similar to NiMH ot NiCad batteries and the
charging requirements are not as severe (and safety oriented) as LiPo.  LiPo
batteries need special chargers to insure safety during charging.

If you don't mind the weight of lead acid batteries, then the low cost
alternative is a "lawn mower" battery, or if spillage of the electrolyte
might be a problem, look at AGM or SLA batteries. That is old battery
technology, but it works and is the lesser expensive solution.

An almost zero cost solution is to run heavy gauge wires from your vehicle
battery.  Just make sure there is enough energy left to start your vehicle
when you are ready to break camp.

73,
Don W3FPR

On 4/25/2016 7:57 PM, TFJM via Elecraft wrote:
> I'm sure this question has been asked many times. I recently bought a 
> KX3 so I'm new at QRP and I'm about to head to a camp ground in a few 
> weeks and go portable. Besides using internal batteries, what longer 
> lasting external batteries are recommended? I hear of Lipo batteries and a
slew of others.
> I'm just trying to navigate though the maze of options.
>
>

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