It's a battery/power bank/station that can be remotely controlled and aggregated into a so-called "virtual power plant", which the manufacturer can then sell po

It's a battery/power bank/station that can be remotely controlled and aggregated into a so-called "virtual power plant", which the manufacturer can then sell power source/sink capacity to grid operators. That's why the cellular connectivity is there. That is the true purpose of the entire operation - all other functionality is a distraction (and can be taken away at any time by a software update despite any promises). As per their FAQ (https://pilaenergy.com/tech-specs#faq https://pilaenergy.com/tech-specs#faq): > As balcony solar and plug-and-power products gain momentum, we welcome collaboration with AHJs and utilities to help responsibly shape the future of home energy. If you're interested in partnering with Pila, reach out! The plan is to find enough people to buy these so they have enough aggregate storage capacity to solicit "collaboration" and "partnerships" (https://pilaenergy.com/press https://pilaenergy.com/press) with utilities and make profit (I'm fairly confident the device is currently sold at a loss), with the buyers getting scraps in the best case scenario, and nothing in the worst/expected case. I guess the buyers of the batteries will at least be satisfied with the knowledge that they have paid to "responsibly shape the future of home energy".