Has anybody looked at adding a battery for RETRO?
I am thinking about small battery charging breakout board with its own micro USB connector.
2 Likes
Or you could just use one of these.
I’ve seen something similar for $1.50 too.
If size doesn’t matter then use a USB powerbank like the Juice Up!
Size always matters… 
@ Experimenter - I was thinking more about something that I can put between RETRO and back plate in the enclosure I have made for it:
https://www.ghielectronics.com/community/forum/topic?id=18373