The all-new Brompton Electric G Line is the next generation of Brompton’s iconic folding eBike — now powered by the smoother, smarter e-Motiq system. With 20” wheels for added stability, intuitive handlebar controls, and Start Assist for effortless hill starts, it brings Brompton’s portability into a new era. The removable 345 Wh battery delivers up to 55 miles of range for confident city riding and beyond.
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Design and Performance
Hand-built in London, the Brompton Electric G Line combines classic craftsmanship with next-generation technology. At its heart is the e-Motiq drive system, developed entirely by Brompton to deliver responsive, intuitive power that adapts to your ride.
The new handlebar control puts key information — battery level, range, speed, and assist mode — right at your fingertips. During your first 100 miles, the system learns your riding style and personalises its range predictions, so you always know how far you can go.
Smart Power, Seamless Control
Powered by a 250W rear hub motor and a 345Wh removable battery, the G Line offers up to 90 km (55 miles) of smooth, dependable assistance. The Start Assist function gives a gentle push up to 6 km/h to make hill starts and stop-and-go traffic effortless, while the torque sensor ensures perfectly balanced power delivery.
Hydraulic disc brakes provide reliable stopping power in all conditions, and integrated lighting keeps you visible wherever your day takes you. With app connectivity via Brompton Electric for iOS and Android, you can monitor performance, customise assistance, and stay up to date with over-the-air software improvements.
Built for Adventure, Ready for Everyday
The Brompton Electric G Line is made for everyday rides and weekend escapes alike. Its 20” tyres, hydraulic disc brakes and stable geometry give you control on any surface — from city streets to gravel paths. Compact, capable and confident wherever you take it.
Big on ride feel yet compact in size, the G Line folds down in seconds — meaning adventure doesn’t have to stop when the road does. From misty woodland rides to the city streets, it’s a bike that proves practicality and possibility can coexist beautifully.
Brompton Sizing Explained
The Electric G Line comes in three easy-to-choose sizes — Small, Medium and Large — each tailored to rider height.
Every bike shares the same frame, with stem and seatpost variations designed in collaboration with a world-leading bike-fit expert to deliver the ideal position and ride feel for every rider.
Electric Bike Specifications
Weight
From 19.5 kg
Fork
Aluminium fork with mounting bosses
Pedals
Wide Platform Quick Release
Sprockets
11-13-15-18 Tooth
Seatpost
Small - Standard Black, Medium - Extended Black, Large - Telescopic Black
Saddle
Standard Wide
Hinge Clamps
Self-aligning hinge clamps
Tyres
Schwalbe G-One All Round 54-406. Tan wall
Lighting
AVY Integrated
Brakes
Tektro Hydraulic Disc brakes with 140mm Front / 160mm Rear
Front Carrier
Large diameter front carrier block adaptor for all types of Brompton luggage
On Bike Accessories
G Line essential battery bag & Brompton Bell
Battery
345-wh with LED display. 4-hour full charge using included 2A charger
Connectivity
Brompton Electric iOS and Android apps available for download
Luggage
Essentials bag with 1.5L storage
Frame
Hand-brazed steel main frame
Handlebar Control
Included
Fold Size / Dimensions
from: 28.3" / 72cm (D), 26.2" / 67cm (H), 16" / 41cm (W)
Speed
4-speed + 3-speed (electric assist)
Grips
Ergonomic grips
Wheel Size
20"
Delivery & Aftercare
Built & checked by expert mechanics
Our experienced eBike technicians will build and inspect your bike before dispatch.
No hassle return in the first 30 days
If you aren't satisfied with your purchase, we accept returns providing the bike is in showroom condition and has covered under 5 miles.
Free & Fast Delivery in the UK
We provide free tracked delivery on all eBikes (excluding eCargo's).
Recommended Service Plan & Guarantee
Free 6-week health check & recommended service plan tailored to you. 2 years manufacturers warrantee on all eBikes.
Related eBikes & eBike Accessories
Insurance Available
LAKA's comprehensive eBike insurance offers protection against theft, damage, loss, and more. You get 30 days free insurance by using the code FULLYCHARGED. Elevate your security further with our Gold & Diamond rated eBike locks. For added assurance, consider our optional GPS trackers for select bike models. Ride confidently knowing that your eBike is safeguarded.
What the expert says
The hiplock d1000
The Hiplok D1000 is a diamond rated lock that is resistant to angle grinders and has been widely acclaimed as the best eBike lock on the market.
LAKA
LAKA are a collective insurance company that offers competitive pricing for eBike specific insurance that empowers the rider.
GPS Trackers
GPS trackers with the Bosch Smart System & PowUnity work for Bosch powered eBikes, please get in touch with us if you are unsure exactly what tracker is suited to your bike.
Free eBike Delivery
Once you have placed an order with us, our team will handpick your items and schedule them into our workshop. Our specialist eMechanics will build & inspect your eBike before preparing it for collection or delivery.
FedEx Courier Delivery - Free*
eBikes are dispatched within 1-3 working days when in stock at Fully Charged. Your eBike will be inspected & tested before being safely packaged and sent out to you. Attach the pedals with a spanner, then straighten & tighten your handlebars with an allen key before riding. You will receive updates via FedEx once the bike is en route.
*Free delivery does not include eCargo bikes. For eCargo bike delivery options, please get in touch.
Store collection - Free
Store collection is recommended if you are local to any of our stores. Your bike will be built, fully charged and ready to ride away. Our team can give you a detailed handover in store to help you get set up with everything you need.
Premium Home Delivery - Price is Postcode Dependent
Receive your bike fully built ready to ride. A member of the team will assist setting up everything you need with your bike. Please select the free courier delivery at checkout, and we will be in touch with the estimated cost, and to arrange the handover.
Returns Information
Our team is dedicated to making sure you are happy with your Fully Charged purchase and shopping experience. If for any reason you wish to return or exchange an item, you can find further details on how to do so below.
Cycle to Work & Financing
Ride now and pay later. We offer a range of payment options including 0% Finance and Cycle-to-Work schemes.
Financing
Check out the finance calculator to get a glimpse of the monthly payments, depending on your deposit and the duration of the loan.
Cycle to Work
We provide a variety of Cycle to Work schemes that allow you to save up to 42% through a salary reduction. Now, you have the option to use Cycle to Work directly from your shopping cart.
Price Matching
We work hard to offer competitive prices alongside specialist advice and a great aftercare experience.
If you find the same bike cheaper at a UK retailer with a physical store, let us know. The item must match exactly (model, size, colour), be in stock and available to buy.
We'll do our best to match the price – and you’ll still enjoy the Fully Charged experience.
eBike Sizing
eBike suggested rider height can be found when selecting your frame size from the dropdown.
If this information isn’t available, or you’d like additional confirmation, please get in touch with our eBike specialists who can help make sure you’re getting the right size.
