FD, what about AGM for cranking and lithium for TM and electronics?
I'm considering going to a 24V TM with 2 60ah lithiums, a 100ah lithium for electronics and keep AGM31 with 1100 MCA for cranking and accessories.
My boat came with 36V TM because that's how MLF set it up, but it's really overkill on a Z18. I can almost get on plane with it set to 10. I want one with spot lock, anyway. Maybe the new MG Tour Pro.
You don't want to put electronics on the same circuit as the TM.
I've had no issue running 2-H12's and a H-10, radio, lights and still cranking that power hungry Opti Beast on my group 31 AGM cranking battery. I did move my Talons to the TM side and I permanently mounted a power bubbles unit tied into the TM side.
I did find a 2 bank Li charger but that still puts 2 chargers on board unless your just going to alligator clip your Li chargers every time.
Since you're going to lose 80 lbs anyway by dropping your TM to 24v, I'd stick with AGM'S this go round. That will give the Li industry another 4 years to perfect their products and with the push for car makers to build more electrics, the cost will come way down.
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