The isinwheel U3 Foldable is a folding e-bike that stands out for its low price. At 527 USD, it is 51% below the median price for its type. It is also lighter than most folding bikes, at 23.1 kg. That makes it an affordable option if you need a bike that folds and is easy to carry.
But the low price comes with trade-offs. The battery is small, at 281 Wh. That is 58% below the median for folding bikes. The estimated range is short, too. You get about 21 km on a single charge, which is 56% below the median.
What the numbers say
| Spec | This bike | Median for its type |
|---|---|---|
| Battery | 281 Wh | 672 Wh |
| Weight | 23.1 kg | 28.6 kg |
| Torque | Not published | 50 Nm |
| Estimated range | 21 km | 48 km |
| Price | 527 USD | 1068 USD |
Answers to common questions
How much does it weigh?
The isinwheel U3 weighs 23.1 kg. That is 19% below the median for folding bikes. It is a manageable weight for carrying up stairs or onto a train. But it is not the lightest folding bike you can buy.
How much torque does it have?
The motor torque is not published. MathBikes does not estimate torque. You cannot compare this bike to others on that spec. If torque matters to you, look for a bike that lists it.
What speed class is it?
It is a standard pedelec class. That means the motor assists up to 30 km/h. You need to pedal to get assistance. There is no throttle on this bike.
How far does it really go?
The manufacturer claims a range of 56 km. MathBikes estimates 21 km, with a band of 18 to 23 km. That estimate is 63% below the claim. The estimate comes from a formula, not a test. You can see how it is calculated with the range calculator.
What does it cost to run?
The purchase price is 527 USD. Running costs depend on electricity and maintenance. The battery is small, so charging it costs little. But a small battery may need replacing sooner. Use the cost calculator to compare long-term costs.
Where it falls short
The isinwheel U3 has a small battery and a short estimated range. The 281 Wh battery is 58% below the class median. The estimated range of 21 km is 56% below the class median. If you need to travel more than that, you will run out of power.
Who should buy it
This bike suits riders who want a cheap, light folding e-bike for short trips. It is not for long commutes or heavy cargo. You should be comfortable with its limited range.
- You ride less than 18 km per trip and can charge at your destination.
- You need a bike that folds and is easy to carry, thanks to its 23.1 kg weight.
- You want an entry-level e-bike without spending more than 527 USD.
Look elsewhere if you need a longer range or more power. The estimated range is 21 km, which is below the class median of 48 km. The torque is not published, so you cannot judge hill climbing. Consider a bike with a larger battery and a listed torque figure.
