Lithium Ion RV Batteries

pianotuna wrote:
There is another type that may be even better called "carbon foam". They can be used in cold weather whereas LI don't do so well.

http://www.bruceschwab.com/advanced-energy-storage-systems/firefly-energys-oasis-group-31/

I would expand on this comment to say that LiFePO4 batteries do require the user to be aware of the temperatures in which the batteries will be used. They discharge well in below freezing weather but they get damaged if they are charged when the battery itself is below freezing. Also, they get damaged if the battery itself gets above 140 F. So you put in a BMS and intersperse heaters within the well-insulated battery compartment to maintain the temp above 32 and you are all set.