Along these lines, I’m a fan of the idea that electric school buses could be essentially massive mobile energy storage systems that occasionally transport people around. Disaster in the area? Stresses power grid in the neighboring town? Drive over and plug in on demand!

When was the last time you changed the batteries? I’ve had this and swapping in new batteries was the fix. I tested the old batteries on a cheap-o tester and they all read as good when I took them out… But sure enough, new batteries was the fix for me.