The Ampere Alter Low Step Folding Electric Bike is the ideal choice for individuals on the move. Its folding system has been meticulously designed for effortless and quick usability, ensuring a hassle-free experience from point A to point B. Combining style, practicality, and quality components like Shimano gears and Zoom suspension forks, this bike offers comfort and aesthetics without compromising on convenience.
Equipped with a powerful 65Nm motor, the Alter provides an impressive range of 60 miles, allowing you to stay on the move with ease. Charging the quick-release battery is a simple task, ensuring uninterrupted journeys. With its distinctive matt black finish and a price point of £1,199, this folding bike stands out as a top choice for discerning riders.
The Alter features a lightweight heat-treated aluminum frame, weighing only 22KG's including the battery*. It offers a long-lasting range of up to 40 miles with a 10Ah battery and an impressive 65 miles with a 15Ah battery. The powerful 65Nm motor provides maximum assistance when needed, while the front suspension fork enhances comfort during rides.
This bike boasts a lightweight aluminum frame with an integrated battery, providing a sleek and seamless look. Its three-point folding frame and folding pedals allow for compact storage and easy transportation. The large LCD display includes a USB point for added convenience. The front and rear disc brakes ensure reliable stopping power, while the Shimano 7-speed gears offer smooth shifting.
With 20x45C puncture-resistant tires, the Alter provides peace of mind during your rides. The adjustable stem allows you to find the most comfortable riding position, while the bike is equipped with front and rear lights, a mudguard, pannier rack, and a kickstand, offering all the necessary features for a complete riding experience.
Why not experience this bike first-hand before you buy it? Our 'Try Before You Buy' option allows customers to hire one of our demo models for a week in order to get more familiar with the product. If you subsequently decide to purchase the bike from us you will get £100 voucher for accessories to spend on our website, and we offer discounted prices on purchasing any hired bikes directly! Get in touch today for further information – no commitment required!
(£199 per week, includes white glove delivery and pick up service.)
How is the frame size measured?
Most E-bikes are measured from the centre of the crank to the base of the seat post tube. However, some E-bike manufacturers may measure their bikes differently depending on their style.

What is the right frame size for me?
This helpful guide will help you to find which size electric bike is best suited to you. If you would like a bit more information, don't hesitate to get in touch.
HYBRID ELECTRIC BIKES
MENS
Rider Height | Recommended Hybrid Frame Size | |||
---|---|---|---|---|
Feet & Inches | Centimetres | Frame Size (inches) | Frame Size (cm) | Frame Size |
4'10" - 5'2" | 148cm - 158cm | 13" - 15" | 33 - 39 | X-Small |
5'2"" - 5'6"" | 158cm - 168cm | 15"-16" | 38 - 44 | Small |
5'6" - 5' 10" | 168cm - 178cm | 17" - 18" | 43 - 47 | Medium |
5'10" - 6'1" | 178cm - 185cm | 19" - 20" | 48 - 52 | Large |
6'1" - 6'4" | 185cm - 193cm | 21" - 22" | 53 - 57 | X-Large |
6'4" - 6'6" | 193cm - 198cm | 23" - 24" | 58 - 61 | XX-Large |
WOMENS
Rider Height | Recommended Women's Hybrid Frame Size | ||
---|---|---|---|
Feet & Inches | Centimetres | Frame Size (inches) | Frame Size |
4'10" - 5'2" | 148cm - 158cm | 13" - 14" | X-Small |
5'2"" - 5'6"" | 158cm - 168cm | 15" - 16" | Small |
5'6" - 5' 10" | 168cm - 178cm | 17" - 18" | Medium |
5'10" - 6'1" | 178cm - 185cm | 19"+ | Large |
ELECTRIC MOUNTAIN BIKES
MENS
Rider Height | Recommended Mountain Frame Size | |||
---|---|---|---|---|
Feet & Inches | Centimetres | Frame Size (inches) | Frame Size (cm) | Frame Size |
4'10" - 5'2" | 148cm - 158cm | 13" - 14" | 33 - 37 | X-Small |
5'2"" - 5'6"" | 158cm - 168cm | 15" - 16" | 38 - 42 | Small |
5'6" - 5' 10" | 168cm - 178cm | 17" - 18" | 43 - 47 | Medium |
5'10" - 6'1" | 178cm - 185cm | 19" - 20" | 48 - 52 | Large |
6'1" - 6'4" | 185cm - 193cm | 21" - 22" | 53 - 57 | X-Large |
6'4" - 6'6" | 193cm - 198cm | 23" - 24" | 58 - 61 | XX-Large |
WOMENS
Rider Height | Recommended Women's Mountain Frame Size | ||
---|---|---|---|
Feet & Inches | Centimetres | Frame Size (inches) | Frame Size |
4'10" - 5'2" | 148cm - 158cm | 13" - 14" | X-Small |
5'2" - 5'6" | 158cm - 168cm | 15" - 16" | Small |
5'6" - 5' 10" | 168cm - 178cm | 17" - 18" | Medium |
5'10" - 6'1" | 178cm - 185cm | 19"+ | Large |
COMMUTER ELECTRIC BIKES
MENS
Rider Height | Suggested Commuter Bike Size | ||
---|---|---|---|
Feet & Inches | Centimetres | Frame Size (cm) | Frame Size |
4'10" - 5'0" | 148cm - 152cm | 47cm - 48cm | XX-Small |
5'0" - 5'3" | 152cm - 160cm | 49cm - 50cm | X-Small |
5'3" - 5'6" | 160cm - 168cm | 51cm - 53cm | Small |
5'6" - 5'9" | 168cm - 175cm | 54cm - 55cm | Medium |
5'9" - 6'0" | 175cm - 183cm | 56cm - 58cm | Large |
6'0" - 6'3" | 183cm - 191cm | 58cm - 60cm | X-Large |
6'3" - 6'6" | 191cm - 198cm | 61cm - 63cm | XX-Large |
WOMENS
Rider Height | Suggested Women's Commuter Frame Size | ||
---|---|---|---|
Feet & Inches | Centimetres | Frame Size (cm) | Frame Size |
4'10" - 5'1" | 147cm - 155cm | 44cm - 46cm | XX-Small |
5'1" - 5'3" | 155cm - 160cm | 47cm - 49cm | X-Small |
5'3" - 5'5" | 160cm - 165cm | 50cm - 52cm | Small |
5'5" - 5'8" | 165cm - 172cm | 53cm - 55cm | Medium |
5'8" - 5'10" | 172cm - 180cm | 56cm - 57cm | Large |
VIEW ALL COMMUTER ELECTRIC BIKES

Powerful Motor

Front Suspension

Large Range

Integrated Lights

20" Wheels

LCD Display
specifications
Battery and Range
Charger
Dimensions
Motor
Frame Size
Tyres
Fork
Weight
Display
Walk Assist
Gears
Chainset
Spokes
Saddle/Grips
Headset/Brakeset
Extras
Warranty
Delivery
Returns

1 Year Warranty
Main parts have a warranty of one year. This covers mechanical and electrical parts: including frame, forks, seat, motor, controller, battery and charger. The warranty is subject to proper care for and reasonable use of the e-bike. Components such as bulbs, brake pads, inner tubes, tyres, chain, cables, etc. are regarded as consumables.