In the box, not yet opened brand new Brompton Electric P Line Explore Easy to ride, easy to fold and easy to carry. The Brompton Electric P Line Explore is a folding e-bike with a powerful pedal assist motor and removable battery pack, so you can cycle through the city with ease. The Brompton Electric P Line Urban is Lighter. Faster. Even more portable. This compact Mid Bar e-bike performs folded and unfolded, indoors and out.