How long can a battery backup power a bunch of SBCs? That's the question we'll pose during today's Coffee Break. And what if we reversed the concept of battery backup and instead made the battery the power supply and use mains as the failover? Could we then power our SBC farm from solar? Robbie has spec'd out a server similar to Solbu's find, and has discovered a flaw in the fact that his bank is closed. Joining Robbie Ferguson today are Solbu, bp9, Doug Townsend, MarshMan, Ron Morrissette and Peter Lewis, with a surprise appearance by MiniMarsh.