My parents live in a well-to-do suburb of Chicago. After the frequent, repeated power outages in recent years, a battery pack would be considered as an alterna

My parents live in a well-to-do suburb of Chicago. After the frequent, repeated power outages in recent years, a battery pack would be considered as an alternative to a generator. They don't have a generator -- their property does not make one convenient, and they don't currently have medical needs that require constant power. But when the power goes out in their neighborhood, just walk outside after a few minutes and listen to all the generators. A lot of U.S. infrastructure is no longer really being adequately maintained. I expect quite a few battery packs will be sold to scenarios like theirs. As long as the power failures don't come to exceed the batteries' power delivery capabilities.