Greetings,
I've been e-biking for 21 years, commuting to work 20 years, until I retired last April.
First with a Currie USPD kit on a (low end) Cannondale road bike.
After a couple years I upgraded from the massive SLA bricks to NiMH.
First 6V sub-C packs and later Roomba vacuum packs.
Six...