Adding some Li Ion batteries to my AGM in parallel

[NinerBikes]

I figured BFL13 would be able to provide me with a "how to" mix battery chemistries.

[NinerBikes]

BFL13 wrote:
Niner says, "Mix and match is just plain stupid engineering design."

So I suspect this thread is not serious

That was on solar panels.... this is chemistry.

Why don't you think it's serious? I want power for my ham radio. I need at least 13.1V input at my Elecraft KX3 to get 12.8V under load after the safety diode, to get a full 15w output on Tx. And the "swear word edited" PWM charge controller bleeds RFI like crazy, so I have to shut the solar panel down while doing radio work.

Why won't it work?

[2oldman]

BFL13 wrote:
Niner says, "Mix and match is just plain stupid engineering design."So I suspect this thread is not serious

I suspect you are right. good catch.

[BFL13]

Niner says, "Mix and match is just plain stupid engineering design."

So I suspect this thread is not serious

[Sam_Spade]

2oldman wrote:
I can't see how this is a good idea seeing how Li's charging and discharging characteristics are way different. And pairing a $1200 battery with a $150 one seems, well, weird.

This.

[2oldman]

I can't see how this is a good idea seeing how Li's charging and discharging characteristics are way different. And pairing a $1200 battery with a $150 one seems, well, weird.

[BFL13]

NinerBikes wrote:
I figured BFL13 would be able to provide me with a "how to" mix battery chemistries.

Not a clue about Li Ion, but seems they are fussy from reading that other thread.

When in doubt, just do split bank. Like put the inverter with its own battery and run the rest of the rig on the other battery. When I did that I had two sets of solar too, one on each battery bank.

[KJINTF]

It's not a simple plug and play operation but can be done with good results

[2oldman]

Maybe, but not likely on this subject.