[Deschodt]

If a battery captures X electricity at $x, will it truly send back X to the grid at the higher price, or are there losses involved in the "chemical storage" and restoration of it later, and is that factored into the calculation? I get that for a house use only even a % loss is worth is when the rate is 3x more ;-)

I wanted to do the above in lieu of a generator, time shift and free backup, but ended up going full solar in the end (glad I did as prices are way up) so it's moot for me, but curious about the math. I thought batteries in the act of converting power to a chemical state and returning it to power later for the grid/house would show losses in the transformation, and not send back exactly what they took in, a % that got more serious over time as the battery ages.. True/False ?