A lot of inefficiency, drag, and parasitic energy loss with getting a sled’s power to the ground, so unless “a day’s ride” goes from an average of 125 or 150 miles (or whatever) down to 20 miles, it’s going to take a while for batteries to get there from an output-weight perspective. My own take, which is worth as much as you paid for it.
A 20 mile range would probably work fine for all the mountain poseurs, though. Paint it a highlighter color, give away a matching onesie riding suit with purchase, and they’d sell like hot cakes. Might need to figure out how to make it obnoxiously loud first however, which isn’t the strong suit for electric anything.