Very very nice.
But people, not clear to me where do you find the batteries for this kind of things, or You just every day change the batteries like alkaline batteries in some clock device.
I see lots of kilowattage in projects on this forum, but dont see batteries!
How long is battery life of lead acid starter battery of 55Ah capacity on 500W or 300W used in 12V inverter system if deep discharge ? (discharging lower then 11,9V). How many times You can deep discharge it ?
Lead Acid in such extreme service life (inverters) die die young.