Frequently Asked Questions

Compare your intended terrain, rider size, preferred speed, range requirements, vehicle weight and local riding rules. Product-page specifications should be treated as the primary reference for each model. If you are unsure, email support@sldbkbike.com with your height, weight, riding location and intended use.

No. Published performance figures are estimates obtained under particular test conditions. Actual speed and range vary with rider weight, terrain, tire pressure, temperature, wind, riding mode, acceleration, battery condition and local speed restrictions.

Light rain may be acceptable when permitted by the product specifications, but the bike and battery must never be submerged or cleaned with a pressure washer. Avoid deep water, flooded roads and charging when components or connectors are wet.

Available methods appear at checkout and may vary by country, currency and order value. Depending on eligibility, these may include major credit or debit cards, PayPal, digital wallets or installment options. Never send payment to an unverified account claiming to represent SLDBK.

Payment is authorized or collected when the order is placed, according to the method selected at checkout. An order may still require fraud screening, address verification or stock confirmation before fulfillment.

Contact us immediately. Changes and cancellations are not guaranteed once processing or shipment has started, and applicable deductions or carrier costs may apply. Review the current Return & Refund Policy before requesting a cancellation.

Eligible in-stock items may ship from a regional fulfillment facility in the United States, Canada or Europe. When regional stock is unavailable, an order may be fulfilled directly from the factory. The fulfillment route depends on the product, variant, destination and inventory available when your order is processed.

Regional-warehouse orders generally arrive faster. Factory-direct delivery to the United States is normally estimated at 30–40 business days after dispatch. Processing, customs, remote-area service, severe weather and carrier disruptions can affect delivery. See the Shipping & Delivery Policy for complete terms.

Tracking information is sent after the carrier accepts the shipment. Large electric bikes may travel through more than one logistics stage, so the first tracking record can take time to update. Contact support if the estimated delivery window has passed without a meaningful update.

Photograph the unopened carton, shipping label and every damaged area before assembly or disposal of packaging. Report visible transit damage to support@sldbkbike.com as soon as possible and no later than the reporting period stated in the applicable policy. Do not discard the carton or damaged parts until instructed.

Most models arrive substantially assembled but require final setup, which may include installing or aligning the handlebar, front wheel, pedals, display, light, fender or other components. Follow the model-specific manual and assembly guidance. If you are not confident performing safety-critical adjustments, use a qualified bicycle or motorcycle technician.

Use only the supplied or specifically approved charger in a dry, ventilated location away from heat and combustible materials. Do not charge a damaged, wet, swollen, unusually hot or leaking battery. For extended storage, follow the model manual, check the battery periodically and avoid leaving it fully depleted.

Inspect tire condition and pressure, brakes, fasteners, drivetrain, suspension, cables and electrical connectors. Recheck critical hardware after initial rides. Maintenance intervals depend on riding conditions and usage; off-road, wet or dusty operation requires more frequent inspection.

Eligible products may be returned within the applicable 15-day return window, subject to authorization, condition, packaging, usage and exclusion requirements. Never send a bike or lithium battery to a warehouse without written return instructions. Read the Return & Refund Policy before shipping anything back.

Eligible SLDBK-branded products purchased directly from this store generally include a one-year limited manufacturer warranty, beginning on the delivery date. Coverage, exclusions and claim requirements are explained in the Warranty Policy.

Use the Warranty Claim Form and provide your order number, product model, serial number, delivery date, mileage, fault description and modification status. Clear photos, video and diagnostic details help our support team review the issue efficiently.

Legality depends on the model, configured performance and the laws where it is operated. Some high-power models may be restricted to private property or off-road use and may require registration, licensing, insurance or specific safety equipment. The rider is responsible for checking local requirements before use.

Wear a properly fitted helmet and equipment appropriate to the vehicle speed, terrain and local requirements. High-power or off-road riding may require a full-face helmet, eye protection, gloves, boots and protective clothing. Never carry a passenger unless the model is designed and equipped for one.

Email support@sldbkbike.com, call +86 137 1379 8041, or use WhatsApp. Include your order number, model, serial number, photos, video and any display error code. Support hours are Monday–Friday, 9:00 AM–6:00 PM (GMT+8), with a typical response within one business day.