If storage losses are sufficiently low and the converter hardware is small/cheap enough maybe the process could also find a market as a sealed system, a factory-recyclable single use battery. How about a 3HU rack form factor that if installed in groups automatically coordinates depletion to oldest-first? Main market would be what is currently served by rarely refueled backup generators but it could have a huge long tail of undiscovered use cases wherever power density of batteries is insufficient and diesel generators suffer from noise or bad maintenance, but where fuel price isn't the main concern. Pricing model could be as easy as implementing effectively fuel + rent with a deposit that shrinks over time (blockchain the device log if it makes you feel better somehow). Once established for server rooms, fishing cabins and whatever other niche it will find it might even end up mainstream with BEV that opt for just offering an RX rack over killing range anxiety with half a ton of extra rechargeable that is never really needed. Approaches like this are usually made impossible by chicken/egg problems, but if it starts in a niche both technology and distribution can grow organically. Remember how Tesla was "the laptop battery car" while incumbents insisted on starting all their BEV projects (they did exist) by reinventing the battery?