I'm retired on fixed income. Stimulus money paid the bills.

I already have two very good multimeters: my Dad's iconic 1960s Simpson 260 analog meter. And a 1980s Beckman DM45 (same accuracy and features as the Fluke 75 - today's Fluke 175.) My employer's parent company, Emerson Electric, at the time owned Beckman Industries, and was Fluke's main competitor along with BK. So I got it at a discounted price.
The ISS solar panel's output was 1.67V when I measured it, and the FARS solar panel's output was 1.86V, but was very inconsistent. It either has bad cells or a broken connection. Further investigation will follow. I suspect the larger panel has more wattage capability, but no easy way to check that.