Rattan LF Ultra

The Rattan LF Ultra takes the same long-range 1,944Wh power system as the LM Ultra and puts it into an easier-access step-through folding frame. For riders who want serious battery capacity, high power and a compact storage footprint without climbing over a high top tube, this is one of Rattan’s most practical long-distance platforms.

Why the LF Ultra stands out

• 48V 40.5Ah / 1,944Wh battery: designed for long-distance riding and fewer charging stops.
• 1000W sustained / 1800W peak rear hub motor: substantial power for acceleration, cargo and climbing support.
• Step-through folding frame: easier mounting and dismounting with a frame that still folds for transport or storage.
• Up to 120 miles claimed maximum range: Rattan also lists approximately 100 miles average under its test assumptions.
• Dual hydraulic disc brakes: 180 mm rotors add confidence when managing a heavier, higher-speed bike.
• 400 lb payload capacity: supports heavier riders, cargo and manufacturer-listed rear-passenger equipment.

Best use cases

The LF Ultra is a strong fit for RV travel, long commutes, camping, errands, delivery work and riders who prefer a lower step-over height. The large battery is the central reason to choose it over a typical folding e-bike: it gives the rider more room to use throttle and higher assist levels without the same level of range anxiety associated with smaller 10–15Ah folding-bike batteries.

Verified specifications

Fit and folded dimensions

Rattan lists a 69.3 in. total length, 45.7 in. wheelbase and a 32.7–37.4 in. seat-height range. Folded dimensions are approximately 38.2 x 18 x 33.5 in.. That does not make an 86 lb e-bike “light,” but it does make the package substantially easier to store and transport than a comparable non-folding long-range fat-tire bike.

Ride experience

The combination of a suspension fork, suspension seatpost and 4-inch fat tires gives the LF Ultra a comfort-first character. The step-through frame helps riders who prioritize accessibility, while the high-capacity battery, throttle and 5-level pedal assist system give it the flexibility to cover short utility trips and much longer recreational rides on the same platform.

Included / manufacturer-listed equipment

Rattan lists the battery, 4A charger, fenders, front and rear lights, bell, rear seating/backrest and footrest equipment as standard. Temporary gifts, baskets, extra batteries and trailers are configuration-dependent and should only be assumed included when shown in the selected Watt Wheelz variant.

Range & speed notice: manufacturer range and speed figures are not guaranteed. Actual results vary with rider weight, cargo, terrain, temperature, tire pressure, assist level and riding style. Verify local rules for throttle use, speed classification and passenger carrying before riding.