Can the iScooter U4 battery be charged away from the bike?

Yes. Unlock and remove the 36V 10.4Ah battery for off-bike charging, or charge it while installed. Let the battery reach room temperature first if it is very hot or cold.

How much assembly does the iScooter U4 need on arrival?

It arrives partly assembled. The front wheel, front mudguard, pedals, seat and seatpost need fitting, followed by brake, tyre and fastener checks. A toolkit, manual and assembly video are provided; use a bike technician if you are not confident setting up wheels or brakes.

Is the folding iScooter U4 easy to carry upstairs?

Not for most riders. Folding helps it fit into storage or a vehicle, but the bike weighs about 26.5 kg. Ground-level storage is much more practical if lifting would be frequent.

Is the U4 a better fit than the U1 for comfort-focused riders?

Usually, yes. The U4 adds a low step-through frame, 16-inch tyres, front suspension and a 77-99 cm seat-height range. The U1 is the more compact and lighter option, so it may suit tight storage or occasional car transport better.

Is the iScooter U4 Electric Bike easy to assemble?

The iScooter U4 Electric Bike arrives mostly assembled. Final setup normally includes aligning and securing the handlebars, fitting the pedals and completing essential safety checks. Allow approximately 20–30 minutes, or select our professional assembly and PDI service.

Is the iScooter U4 Electric Bike water resistant?

The iScooter U4 Electric Bike is not fully waterproof. Avoid prolonged exposure to heavy rain, and never submerge or pressure wash the bike or its electrical components. After riding in wet conditions, wipe the bike dry and store it in a dry, sheltered location.

iScooter U4 Low Step Through Foldable Electric Bike - U4 White

iScooter U4 Low Step Through Foldable Electric Bike - U4 Black

iScooter U4 Low Step Through Foldable Electric Bike - U4 Black + U4 White

iScooter U4 Low Step Through Foldable Electric Bike

Brand:

Certified

iScooter U4 Electric Bike

Motor

500W

Battery

36V 10.4AH

Speed

15.5 MPH

Range

55 MILES

£589.99 £479.99

In stock 20 sold this week

Klarna £160.00 ×3

Clearpay £120.00 ×4

PayPal £160.00 ×3

Finance

From —/mo 24, 36 or 48 months at 15.9% APR 6 or 12 months at 0% interest

Shop Pay

From £40.00/mo 12 months at 0% interest Up to 24 months available

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Add recommended accessories before checkout.

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£25.49 £29.99

Kryptonite U-Lock with 4 Foot Kryptoflex Cable Sold Secure Gold

£38.24 £44.99

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Delivery options

Choose your delivery option at checkout. Availability may vary by product, stock location and postcode.

Standard Home Delivery 3–5 working days

Our standard tracked home delivery service for most UK mainland orders.

Next Day Delivery Selected items

Available at checkout on selected in-stock items only. If Next Day Delivery is available for your order, it will appear before payment.

Trusted delivery partners

Tracking details are sent once your order has been dispatched
Some large, heavy or specialist items may arrive with a dedicated courier
Remote areas, Highlands, islands and non-mainland postcodes may require extra time or a delivery surcharge

Click & Collect Collection from our Nuneaton workshop

Collect from our Nuneaton workshop

Collection is available by appointment from our Nuneaton workshop. The preparation time depends on where the product is currently stored. Contact us before ordering for the latest availability, or place your order and we will confirm when it is ready to collect.

Transfer required to Nuneaton Usually 5–7 working days

Products stored at another warehouse normally require 5–7 working days to reach our workshop. We will confirm as soon as the item is ready and arrange your collection appointment.

Best Price Guaranteed Found the same product for less?

Best Price Guaranteed

Seen the exact same product advertised for less? Send us the live offer before you order and we’ll check whether we can match it.

We consider genuine UK retailer offers for items that are in stock
The model, specification, colour, condition and delivery terms must be like-for-like
Marketplace or private sellers, used or clearance items, private codes, finance-only offers, bundle deals and obvious errors are excluded

Usually answered within 24 hours. Need a quicker answer? WhatsApp us or call 0800 099 6187.

Why Buy From TrailSurge? UK showroom, product support & aftercare

Buy your iScooter U4 Electric Bike with UK-based support

TrailSurge is a UK retailer with a showroom and workshop in Nuneaton. Our team can help before you order and continue supporting you after your iScooter U4 Electric Bike arrives.

UK-based customer support before and after your purchase
Showroom and workshop in Nuneaton
Help with product questions, setup, parts and aftercare
Tracked UK delivery with support if you need help with your order
Speak to a real member of our team before placing your order

Why buy through TrailSurge? For the best UK-based support and aftercare, we recommend buying through TrailSurge rather than ordering directly from overseas manufacturers or China-based sellers, where returns, warranty support and parts handling can be more difficult.

Need help with the iScooter U4 Electric Bike? Ask our team a question before ordering.

WhatsApp Us Call Us 0800 099 6187

TrailSurge Warranty+ BEST WARRANTY IN THE UK Stronger cover. UK support. Real help when you need it.

TrailSurge Warranty+

Extra protection, backed by our UK team

For the first 12 months, TrailSurge Warranty+ gives you direct UK support on eligible faults affecting the main factory-fitted components — with practical help to get you back up and running.

UK-based fault support
Major factory-fitted components covered
Repair, parts or another suitable solution where eligible

Typical component cover: Eligible faults affecting major factory-fitted components, including the frame and forks, motor and drive system, controller, battery and BMS, charger, wiring, display, gears, brakes, and factory-fitted sensors or controls.

iScooter manufacturer warranty

Warranty period: 2 years against manufacturing defects on iScooter electric bikes.
What’s covered: Confirmed production faults affecting the original factory-fitted electrical and mechanical components following technical assessment.

Road use notice: This bike is over 250W and is for private land/off-road use only. Need a UK road-compliant option? View road legal e-bikes .

Description

500W peak motor
55 mile range
Low step-through frame
16-inch tyres

The iScooter U4 is a low step-through foldable electric bike made for comfort, easy mounting and practical everyday use. It combines a 500W motor specification with a removable 36V 10.4Ah battery, giving up to 55 miles of listed range while keeping a compact folding design.

Low step-through frame for easier mounting and dismounting
Foldable design for storage at home, work or in a vehicle
36V 10.4Ah removable battery with up to 55 miles of listed range
Up to 15.5mph assisted speed
Disc brakes and front suspension for confident everyday riding

The U4 is a strong choice for riders who want a more comfortable and accessible folding e-bike than the smaller iScooter U1. The removable battery also makes charging easier, especially if the bike is stored in a garage, shed or shared space.

Best for: riders wanting a foldable, low-step e-bike with better range and comfort for daily use.

Please note: range depends on assist level, rider weight, route, tyre pressure and weather.

Not sure this is the right e-bike? Compare more electric bikes, including road legal electric bikes for everyday UK riding.

Specifications

Collection	Electric Bikes
Brand	iScooter
Bike Type	Low Step Electric Bike, Folding Electric Bike
Motor Power	500W
Battery	36V 10.4Ah
Top Speed	15.5 MPH
Max Range	55 Miles
Max Rider Height	4'11"-6'4" / 150-192cm
Charging Time	4-5 hours

Shock Absorbers	Front suspension
Wheel Size	16 x 2.15-inch pneumatic tyres
Brakes	Front and rear disc brakes
Gears	Electric mode and pedal assist modes
Bike Weight	26.5kg / 58.42lbs
Max Rider Weight	120kg / 264lbs
Dimensions
Built Dimensions	143 × 53 × 110 cm (L × W × H)
Box Dimensions	126 × 21 × 65.5 cm (L × W × H)

55-Mile Range from a Removable 36V 10.4Ah Battery

The removable 36V 10.4Ah battery supports up to 55 miles of assisted riding and can be charged on or off the bike for added convenience.

Low Step-Through Frame with Easy Folding

The accessible low step-through frame makes mounting easier, while the folding design helps the U4 fit into smaller storage and transport spaces.

iScooter U4 Feature 3 product feature image

Front Suspension, 16-Inch Tyres and Disc Brakes

Front suspension, 16 x 2.15-inch pneumatic tyres and front-and-rear disc brakes combine everyday comfort with dependable control.

What’s Included in the Box

1 x iScooter U4 Electric Bike

1 x Charger

2 x Keys

1 x Tool Kit

iScooter U4 Electric Bike

Extra protection, backed by our UK team

Description

500W peak motor

55 mile range

Low step-through frame

16-inch tyres

Specifications

Dimensions

55-Mile Range from a Removable 36V 10.4Ah Battery

Low Step-Through Frame with Easy Folding

Front Suspension, 16-Inch Tyres and Disc Brakes

What’s Included in the Box

Assembly Information

Assembly Video

Frequently Asked Questions