Isinwheel U4: A Folding E-Bike With Extra Range and Wider Tires
The U4 takes the folding, portable format and adds a bigger 10.4Ah battery for up to 35 miles of range — noticeably more than a typical compact folder — plus wider 2.15" tires for extra stability on uneven pavement or light gravel.
It still folds down for storage in a trunk, closet, or under a desk, so you're not trading portability for range. Front and rear disc brakes and front shock absorption keep the ride controlled even as you push toward the higher end of that range.
Best for: riders who want a folding bike but don't want to compromise on distance — longer commutes, mixed pavement/gravel routes, or fewer charging stops during the week.
