I went with one BB heated 100 ah battery. Just got it installed. I camp out in below zero temps occasionally here in Wyoming, so I wanted a reliable battery heating system. You can't run the furnace all the time in those temps, because it would take too much propane. The furnace would run constantly.
I also installed a Victron Smart Shunt. I understand that it won't measure the power being used by the heating element. I'll just synchronize the shunt again when the battery is fully charged. That shunt is a really cool little device by the way!
Edited by JimBow, 03 May 2021 - 06:02 PM.
