LEDs, leds or L.E.D.s?

Just puzzled over this sentence format for LEDS.

Natalya had already eaten so he cooked up a microwave meal. As he watched the LEDs count down he thought about when he was a young teenager.

 

I sometimes have to write about LED lights for my job and I always do it like that - LED.

I don't think I've ever pluralised the acronym itself. Does a microwave have multiple LEDs? If it does, that's how I'd do it <

 

It's more commonly LED but in this instance I think the word timer would be more appropriate?

 

LEDs looks totally fine and natural to me. The other options are just..

 

I'd use the word 'timer' instead of LEDs in this context, as it's a clearer indication of what the character is looking at. 'Microwave's display' would be another option.

 

And I just read a book where this word shows up. Can't remember how they put it, but I've always been a fan of clean punctuation, so I always prefer no periods in my acronyms if I can get away with it. Maybe say "digital timer"?