isinwheel U4 Electric Bike for Adults

The isinwheel U4 Electric Bike for Adults delivers the perfect balance of power, precision, and portability. Equipped with a 500W motor (750W peak), it reaches speeds of up to 19 MPH (30 km/h) and covers 25 miles in electric mode or up to 55 miles with pedal assist. The upgraded 374.4Wh UL2849-certified lithium-ion battery ensures both reliability and long-distance performance, while the foldable aluminum frame makes it easy to carry and store.

Designed for urban commuting, fitness, and everyday adventures, the U4 combines smooth acceleration in just 3.8 seconds, dual disc brakes for precise stopping, and a 75 LUX headlight with reflectors and rear light for safe night rides. With its 16-inch wheels, multiple riding modes, and support for handlebar bags and rear baskets, this e-bike adapts to your lifestyle with ease.

Why Riders Choose the U4

• 500W brushless motor (750W peak) for reliable power.

• Up to 19 MPH speed and 25–55 miles range with pedal assist.

• 374.4Wh UL2849-certified lithium battery for safety & endurance.

• Accelerates smoothly in just 3.8 seconds with advanced control chip.

• Dual disc brakes + 75 LUX headlight, reflectors & taillight for safer riding.

• Foldable, lightweight aluminum frame for portability & storage.

• 3+1 riding modes – cruise, commute, exercise, or hybrid.

• Supports handlebar bags & rear baskets for extra convenience.

Power and Endurance

Spec	Detail
Motor	500W (750W peak)
Battery	374.4Wh lithium-ion (UL2849-certified)
Max Speed	19 MPH (30 km/h)
Range	25 miles (electric) / 55 miles (pedal assist)
Charging Time	5–6 Hours
Control System	Upgraded chip + Hall sensor
Standards	UL2849 + CFR1512 Certified

Comfort, Safety & Control

• 16-inch wheels – ideal for urban commuting.

• Dual disc brakes – precise and safe braking.

• Rigid suspension – lightweight and low-maintenance.

• 75 LUX headlight, reflectors, and taillight – enhanced night visibility.

• Aluminum frame – strong, durable, and moisture-proof.

• Foldable design – perfect for home, office, or travel storage.

Smart Tech On-Board

• New control chip + Hall sensor for smooth, precise riding.

• Quick acceleration (0–19 MPH in 3.8s) for urban traffic.

• 3+1 riding modes – cruise, pedal, electric, or hybrid assist.

• Compatible with add-on accessories (rear baskets, handlebar bags).

Fit & Dimensions

Spec	Measurement
Product Size	56.3 × 20.8 × 43.3 in (143 × 53 × 110 cm)
Net Weight	59.5 lbs (27 kg)
Frame Material	Aluminum
Wheel Size	16 in
Max Load	264 lbs (120 kg)
Rider Height	Adult / Intermediate skill level

What’s in the Box

• isinwheel U4 Electric Bike ×1

• Charger ×1

• isinwheel Brand Card ×1

• User Manual ×1

VoltCentre Promise

Free Shipping – Fast delivery with real-time tracking.
Warranty & Coverage – Backed by manufacturer warranty plus VoltCentre’s support.
Curated Collection – Only rider-tested, approved products make it to our store.

isinwheel Warranty

Our warranty policy covers all the products in your order for up to 12 months after sales (excluding accessories). The 30-day return and refund policy allows you to buy with peace of mind.

• Shipping damage

  • Inspect on delivery and note any damage on the Bill of Lading

  • Photograph the packaging and product; keep all materials

  • File a damage claim within 14 days via customer support

• How to file a warranty claim

  1. Contact VoltCentre (or your original seller) with your order/invoice number

  2. Provide the scooter’s serial number, clear photos/video, and a description of the defect

  3. Return the item in original or dealer-approved packaging if requested

• Valid proof of purchase

  • Online order number from an authorised isinwheel reseller

  • Sales invoice

  • Dated sales receipt (more than one document may be required)

• Warranty is void if

  • Product is out of warranty, lost, stolen, or complimentary

  • Damage results from water, misuse, collisions, self-modifications, or incompatible accessories

  • Unsupported software/firmware has been installed

  • Sufficient proof of purchase is not provided

  • Product was bought from an unauthorised seller

• Out-of-warranty parts & repairs

  • Replacement parts are available at manufacturer pricing

  • Contact customer support for quotes or repair requests (responses within business hours)