Reply To: [unofficial weekender] 3 weeks until Christmas 2020

[blinky465 17028xp 0]

Almost certainly. The voltage drop across an LED is around 1.6v – 2.1v depending on colour (blue is at the heavier end, red lighter and I guess green somewhere in the middle). At 1.9v you’re probably right on the edge of it having enough voltage to light up anyway! Get yourself some new batteries ?