Hmm. So when I bought my LightAPRS-W 2 the specs said 2.7 to 16 volts, so I had tried powering it with a 9v battery. It didn’t work, and afterwards I was never able to get the HF portion working. I did some testing and the board seemed to fail at around 6v. I wrote the designer, who said it shouldn’t have been a problem, but then didn’t hear much else.
Now the site says the limit is 2.7-6 volts…..
I wonder if they’ll at least give me a discount on my next order…