CEMOTO B28 (EB28) — 27.5" Electric Mountain Bike A 27.5-inch electric mountain bike with a 500W motor, 48V 13Ah battery and alloy suspension fork, built for stability and manoeuvrability on steep hills and rocky paths. Product page: cemotoride.com/products/cemoto-eb28a-emountain-bike Overview The CEMOTO B28 — sold on the store under the handle cemoto-eb28a-emountain-bike and titled CEMOTO EBIKE B28 — is the 27.5-inch mountain eBike in the CEMOTO range. Its 27.5-inch wheels are a deliberate middle ground: larger than 26-inch wheels for better rollover and stability, smaller than 29-inch for quicker handling in tight terrain. CEMOTO describes the result as a blend of stability and manoeuvrability that makes it easy to tackle steep hills and rocky paths. The 500W brushless motor is the lowest-rated motor in the CEMOTO eBike line, paired here with a 48V 13Ah pack — the smallest battery in the range. The design brief is a comfortable, capable all-rounder rather than a maximum-power machine: CEMOTO emphasizes rider comfort, an ergonomic frame, adjustable suspension, and confident grip on descents and sharp turns. Naming note: this model is listed as B28 in the product title and page heading, but the store URL and handle use EB28A. Both refer to the same bike. It is a different model from the B28A (high-step fat tire) and the B28D (26" folding fat tire) — check the tire size and frame style to be sure which you have. Available colors The B28 is listed as a single-variant product. Color options are not published on the store listing. For current pricing and availability, see the CEMOTO store listing. Key specifications Specification Value Motor 500W brushless Battery 48V 13Ah Li-ion Charger 54.6V 2A, UL-listed Charge time 6–7 hours Fork Alloy suspension (Lo) Tires 27 × 2.35 all-terrain Brakes Disc brakes Top speed 20 mph Gears SHIMANO 7-speed Display Color LCD, 4 inch Frame Aluminum 6061 Load capacity 120 kg Sizes and weight Measurement Value Net weight (N.W.) 33 kg Gross weight (G.W.) 38 kg Carton size 148 × 23 × 82 cm Load capacity 120 kg Wheel size 27.5 inch Feature highlights 27.5-inch wheels — the balance point between rollover stability and tight-terrain agility 500W brushless motor — adequate for hills and loaded commuting, and gentler on battery consumption than the 750W models 48V 13Ah battery with 6–7 hour charge time — the quickest charging pack in the CEMOTO eBike range Alloy suspension fork — takes the edge off rocky paths and roots 27 × 2.35 all-terrain tires — wider than a commuter tire for grip off pavement, narrower than a fat tire for efficiency 6061 aluminum alloy frame — lighter and more corrosion-resistant than the carbon steel frame used on the EB66 SHIMANO 7-speed gearing — climb under your own power when you want to conserve battery Color LCD display with 4-inch screen — readable speed, battery and trip data What it is for CEMOTO positions the B28 for riders who want trail capability and daily-commute practicality in one bike: Steep hills and rocky paths — the design brief called out these conditions specifically Muddy trails and smooth paths — the all-terrain tires and suspension cover both Long rides without range anxiety — a robust battery is cited as a core design goal, though the 13Ah pack is the smallest in the range. Plan carefully for long off-pavement rides; see Range Calculator Beginners and experienced riders — CEMOTO markets it as an excellent choice for both Comparison with the other fat-tire models B28 B28A B28D Wheels 27 × 2.35 26 × 4.0 (fat) 26 × 4.0 (fat) Motor 500W 750W 750W (1,500W max) Battery 48V 13Ah 48V 15.6Ah 48V 15.6Ah Frame 6061 alloy 6061 alloy, high step 6061 alloy, folding Brakes Disc Hydraulic disc (XOD) Hydraulic disc (XOD) Choose the B28 for efficiency and lighter weight; choose a fat-tire model for sand, snow, loose gravel and a softer ride. Range and performance notes Published figures are manufacturer-stated maximums under controlled test conditions (typically a 70 kg rider, 25 °C and 20 km/h constant speed). The 500W motor and 13Ah pack combination means the B28 has the least energy capacity in the CEMOTO eBike range — 48V × 13Ah ≈ 624 Wh. For a structured estimate under your own conditions, see Range Calculator. The manual's advice applies directly here: to save energy and extend battery life, use pedal assistance when climbing a slope or riding into wind. Low tire pressure increases resistance and reduces range — check air pressure frequently. Safety and legal notes Wear an approved helmet and observe all road rules for the area where you ride. Confirm your local eBike rules. See Riding Laws & Compliance. eBikes are single-rider vehicles. Never carry a passenger. Intended terrain: eBikes are for on-road or improved-trail use. Avoid riding rough trails — damage may occur. Learn the trail rules and stay within the bike's limits. Do not ride through deep water, and avoid prolonged riding in rain. When riding in bad weather, braking distance increases. Chain tension should be about 15 mm. See Drive & Transmission. Images B28 — official product photography. Main view Detail 1 Detail 2 Detail 3 Related pages eBikes & Scooters Overview B28A High Step Fat Tire B28D Folding Fat Tire eBike Manuals Tires, Wheels & Suspension Range Calculator Note: All performance figures are manufacturer-stated maximums and are not simultaneous guarantees. Specifications are subject to change without notice.