I have knocked up a battery box for a specialized you could get 20ah at 34v in it. I stuck on youtube it didn't realy detract from the
I keep a copy of Up in Smoke, just in case.
using my Bluetooth controller I restrict the motor to 250w and limit it to 15 mph in public.
Still better than paying 3 to 6 k for something that has no range.
I have just priced a 60v 3000w mid drive kit with batteries and inc delivery it would come to £1250 ish using lipos. with 16ah . I picked up an old banshee scream ( real heavy duty frame ) and smash through the countryside Np. I am on building a light wight specialized at the moment using BB...