Folding electric bike 20" with 150 km range – DYU C9

The C9 is DYU's folding e-bike designed for covering lots of miles: its 48 V, 15.6 Ah (749 Wh) battery is among the largest for its price, and hydraulic disc brakes give safe, effortless stopping. It weighs about 30 kg, so it's for folding into the boot or a storage room rather than carrying in your arms.

Guide price: €999 (VAT included). See the full data in the specifications on this page.

Estimated real-world range

The manufacturer claims up to 150 km, measured with minimum assistance, flat ground and a light rider. In normal use (medium assistance, a 75–85 kg adult, some hills and stops) we estimate between 54 and 75 km per charge, based on 10–14 Wh/km with its 749 Wh battery. With maximum assistance, cold weather or steep climbs, expect the lower end of the range.

Example: for a 10 km commute each way, you would need to charge it roughly every 2–3 working days.

Who is the DYU C9 for?

• People short on space: it folds for a car boot, a small storeroom or a corner of the flat.
• Riders who value braking: hydraulic disc brakes stop with little effort and need less adjustment.
• High-mileage riders: the large range means charging only a few times a week.

Do you need a licence or number plate?

No. With 250 W rated power and assistance up to 25 km/h, it is treated as a bicycle in the EU: no licence, no registration and it can use cycle lanes. In Spain helmets are compulsory on interurban roads and for under-16s everywhere.

Alternatives worth comparing

• ENGWE P20 (€999, €0): 18.5 kg folding e-bike for under €1,000, with hydraulic brakes and up to 100 km claimed. For city riding, trai…
• Fafrees F20 Flex (€999, €0): Fafrees F20 Flex: 250 W, 43 Nm, 720 / 900 Wh battery and a claimed range of 75–100 km/95–120 km. Mechanical di…
• Fafrees F20+ Pro (€999, €0): Fafrees F20+ Pro: 250 W, 45 Nm, 900 Wh battery and a claimed range of 95–120 km. Mechanical disc brakes and a …

Need help choosing? Read our buying guide.

Frequently asked questions

What is the real-world range of the DYU C9?

In normal use we estimate between 54 and 75 km per charge; the manufacturer claims up to 150 km in ideal conditions.

Do you need a licence for the DYU C9?

No. It is a 250 W pedal-assist bicycle with assistance up to 25 km/h, so no licence, registration or compulsory insurance is required.

How much does the DYU C9 weigh?

30 kg, and it folds for storage or transport.

Where can I buy the DYU C9?

NovoDix compares the model and sends you to the official brand store, where the purchase is completed with its warranty and delivery.