What does the KETELES K820 Pro Electric Bike's 21-speed gearing add?

The 21-speed drivetrain provides three front chainring ranges and seven rear sprockets, giving more manual ratios than the seven-speed systems on many e-bikes. Use lower gears before a climb and ease pedal pressure during shifts. The extra front derailleur also adds another cable and adjustment point to keep clean and aligned.

Can the KETELES K820 Pro Electric Bike battery be charged indoors?

Yes. The 48V 17.5Ah down-tube battery is removable and lockable. Published charging times on the current manufacturer page conflict between 3–5 and 7–8 hours, so allow the longer window and use the charger's indicator rather than promising a fixed finish time. Refit the pack until it is secure and locked.

What rider fit and load should I check for the KETELES K820 Pro Electric Bike?

KETELES lists a recommended rider height of roughly 165–198 cm and a 200 kg load-capacity figure. Treat that load as the combined rider, luggage and accessories, and confirm the rear rack's separate rating before adding cargo. Riders near either height limit should check stand-over clearance, saddle range and reach.

Is the Bicicletta Elettrica Keteles K820 Pro easy to assemble?

The Bicicletta Elettrica Keteles K820 Pro 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 Bicicletta Elettrica Keteles K820 Pro water resistant?

The Bicicletta Elettrica Keteles K820 Pro 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.

KETELES K820 Pro Electric Bike 250W 48V 17.5AH KETELES

Bicicletta Elettrica Keteles K820 Pro

Motor

1000 W

Battery

17,5 AH

Speed

24 KM/H

Range

0 KM

€1.204,95 €951,95

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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.

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

Buy your Bicicletta Elettrica Keteles K820 Pro 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 Bicicletta Elettrica Keteles K820 Pro 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 Bicicletta Elettrica Keteles K820 Pro? Ask our team a question before ordering.

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Trail Surge Warranty Plus FULL OFFICIAL WARRANTY INCLUDED UK-based support alongside the manufacturer warranty TRAILSURGE COVER 12 months

TWO LAYERS OF PROTECTION

More confidence after you buy

TrailSurge Warranty+ gives you a direct UK warranty alongside the product’s manufacturer warranty.

01 TRAILSURGE WARRANTY +

12 months of TrailSurge support

UK-based fault support
Battery, motor and frame fully covered.
Repair, parts or another suitable solution where eligible

02 KETELES WARRANTY

Manufacturer warranty period 3 years on the frame and 1 year on original fitted parts from delivery.

Manufacturer cover

Manufacturing defects affecting the frame, battery, motor, controller, charger, forks, brakes, display, lights and other original components. Approved cases are generally resolved with replacement parts.

Typical component protection Eligible faults affecting the frame and forks, motor and drive system, controller, battery and BMS, charger, wiring, display, gears, brakes and factory-fitted controls.

Description

Riepilogo veloce
La KETELES K820 Pro è una bici elettrica compatta con pneumatici grassi a motore singolo progettata per la guida urbana e su pista di tutti i giorni. È un pendolare versatile che bilancia autonomia e potenza in un pacchetto pieghevole facile da usare.

Erogazione di potenza fluida
Il motore nel mozzo posteriore da 250 W offre una pedalata assistita e un supporto costante dell'acceleratore, perfetti per le strade cittadine o per l'uso su sentieri leggeri. I ciclisti segnalano un controllo regolare della velocità e prestazioni affidabili su terreni pianeggianti e ondulati.

Comfort e controllo
I pneumatici grassi e le sospensioni anteriori assorbono i dossi, offrendo sicurezza su superfici irregolari. I freni a disco forniscono una potenza frenante affidabile e la trasmissione Shimano a 7 velocità offre flessibilità durante l'accelerazione o la salita.

Sistema di batterie intelligenti
Una grande batteria rimovibile da 48 V 17,5 Ah garantisce un'autonomia di guida estesa. Si blocca al telaio e include le tipiche protezioni di sicurezza contro il sovraccarico e lo scaricamento eccessivo per una maggiore tranquillità.

Tecnologia di cui ti puoi fidare
Il display LCD completo mostra tutti i parametri chiave della corsa (velocità, distanza, durata della batteria e livello di assistenza), semplificando il monitoraggio delle prestazioni e la pianificazione delle corse in modo efficiente.

Costruito per l'uso quotidiano
Il telaio pieghevole consente uno stoccaggio e un trasporto compatti. Grazie alla stabilità degli pneumatici grassi, al peso moderato e ai componenti affidabili, la K820Pro è un'opzione versatile per gli spostamenti quotidiani, le commissioni e il divertimento fuoristrada occasionale.

Specifications

Collection	Biciclette Elettriche Keteles
Brand	Ketele
Bike Type	Montagna
Motor Power	1000 W
Battery	17,5 Ah
Top Speed	15,5 miglia orarie
Acceleration Method	Regular Pedalling + Pedal Assist + Throttle Acceleration
Max Range	Oltre 30 miglia
Charging Time	7+ ore

Shock Absorbers	Fronte
Wheel Size	Pneumatico grasso da 26 pollici x 4,0
Brakes	Freni a disco anteriori e posteriori
Gears	Cambio Shimano a 7 velocità
Bike Weight	28 kg
Max Climb	15 gradi
Max Rider Weight	120 kg
Dimensions

Check your fit

Size & Rider Fit

Seat Height: 99 cm
Maximum Rider Weight: 120 kg

Close-up of a mountain bikes front suspension fork and rear shock absorber, highlighting metal brackets, shock components, and part of the blue bike frame with a black tire underneath.

250W Rear Hub Assistance

Powered by a 48V 250W brushless rear hub motor, the K820 Pro is built for smooth everyday riding with consistent assistance and a natural pedal feel when you want to keep it efficient.

Close-up of an electric bikes 23AH removable battery, showing its cell structure. Text highlights battery features, cycling modes, charging time (8–10 hours), waterproof material, and riding range (up to 42 miles).

48V 17.5AH Removable Battery

Removable 48V 17.5AH lithium battery designed for easy charging at home or work. The brand quotes around 30-45km of range per charge (usage dependent) with a typical 7-8 hour recharge time.

Close-up images of a bicycle’s front and rear wheels, each with a 48V 1000W brushless geared hub motor, disc brakes, and labeled text indicating the motor type and location.

Confidence on Mixed Terrain

29x2.1 tyres and front suspension help take the sting out of bumps, and disc brakes provide reliable stopping. Shimano 21-speed gearing gives you the cadence range for hills and flatter cruising.