Lou,
The charging mechanism for the KBAT2 is specifically for the SLA
battery. It may work for the LiFePO4, but that is just a guess on my
part based on the terminal voltage.
Secondly, you should not exceed 15 volts, so a 4 pack of Li-Ion exceeds
that voltage.
Then there is the matter of charging a battery different than an SLA.
Use a charger that matches the battery chemistry chosen. You could add
a direct connection to the battery to plug in the charger. See my
website www.w3fpr.com for some ideas - do NOT eliminate the fuse inside
the K2 - it is important because a battery contains a LOT of energy and
can cause fires and spew molten metal should a short occurs. Murphy
says it will happen!
73,
Don W3FPR
On 1/25/2021 4:54 PM, Louandzip via Elecraft wrote:
I'm looking at current options for K2 battery operation. I built mine 20 years
ago and never got the internal SLA option. I always used an external battery.
I see the KBAT2 is still available but wonder about some of the newer battery
types; Li-Ion, LiFePO4 etc. I saw LiPO conversion from '04 that fit in the
internal SLA holder, but I'm not enthused about that. Internal is nice, but
not essential. What are you using and recommending?
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