I'm looking to build a grid-charged LiFePO4 pack because in the summer my peak energy cost is 6x the cost of super off-peak (9 cents vs 56 cents per kWh, yay San Diego)
Basically, this system: https://www.mobile-solarpower.com/the-classic-400-watt-rvs-vans-buses.html
...but instead of solar, a...