Best house battery?

pianotuna wrote: What I would love to know is, after those 1500 deep cycles, is there still 80% of the capacity left? (I'm using that number as it is where electric vehicle batteries are considered "done in".) This is a good question. I have a nickel hydride battery in my hybrid Rav 4. It operates best between 20%- 80% SOC (it never fully charges except on long down hills , much different than Li or SiO2 or wet cell. These are cheaper than Li and last 15 years in a car that is a DD, don’t know what they would last in a MH used 3 months a year.