A Tesla house battery sounds good if it ever comes to market. Until then gel cells. They weigh around 200 pounds each and thats about the limit of what a person can move easily. By the time you get 6-10-12 gel cells hooked up its a lot of weight. You need a concrete or earth floor. I keep gel cells in my cellar hooked up to an inverter which is high and dry running 24/7. The power goes off it switches right away. The nice thing about gels is when my cellar is water logged from snow melt the gels are totally sealed.