2019 Magnum Premium 48v Folding Electric Bike - Black The Magnum Premium 48v Folding eBike is a powerful 48v 500 watt folding bike that will get you places fast. Radial spokeless wheels with a wide gel saddle for maximum comfort and reliability The Magnum Premium 48v Folding Electric Bike comes standard with a rear Carrier, Front and Rear lights and Padded Leather grips.