ONESPORT OT08 PRO Dual Battery Mountain E-Bike
SKU: C89309In Stock
SPEED15.5 Mph
RANGE112 Miles
MOTOR500W
BATTERY36Ah
CHARGING9 Hours
WEIGHT86 lbs
Adjustable Cycle Helmet£38.99
Front and Rear Light Set£44.99
Private Land Use Only.
Not for public roads, pavements or cycle paths. Its motor and assisted top speed are above the UK EAPC limits of 250W and 15.5 mph, which makes it a motor vehicle in law. It would need registration, insurance and a licence. Ride it on private land.
See UK LegislationThis one carries 1,728 Wh of battery. The maker quotes 112 mi; in mixed riding with some hills, expect nearer 84 mi. A full charge costs about £0.48. Across a year that is roughly £981.00 less than making the same journeys by car, so the bike pays for itself in about 16 months. Everything here is worked out from this bike's own specification. Estimates, not promises: the assumptions are printed underneath.
Range you can expect
| Low assist, flat roads | 112 mi |
|---|---|
| Mixed riding, some hills | 84 mi |
| Full assist, loaded or hilly | 62 mi |
| Riding time on a charge | 7 h 14 min |
What it costs to run
| A full charge | £0.48 |
|---|---|
| Every 100 miles | £0.43 |
| Electricity for a year | £9.00 |
| The same year by car | £990.00 |
| You keep | £981.00 |
| Pays for itself in | 16 months |
Worked out from the specification
| Battery energy | 1,728 Wh |
|---|---|
| Energy per mile | 15.4 Wh |
| Charger output | 4.0 A |
| Power to weight | 12.8 W/kg |
| You can carry | 265 lb |
Based on £0.245 per kWh, £0.45 per mile to run a small car, and 2,200 miles a year. Charging is costed at the socket, not at the battery.
Thirty six amp hours across two batteries, and a hundred and twelve miles
The Onesport OT08 Pro carries 36Ah across a dual battery system, higher capacity than ninety eight per cent of our catalogue, and claims 112 miles, at £1,299.
At 500W it sits outside the UK road rules, so we sell it for private use on private land. Please read the panel above before you order.
Where you can and cannot ride it
An electrically assisted pedal cycle is capped at 250W continuous. This motor is rated at 500W.
It is sold for your own property, or land where the owner has given you permission. On a road or a cycle path it would need registration, tax, insurance and a licence.
Two batteries rather than one big one
Thirty six amp hours split across two packs.
- Each one is a weight you can actually carry indoors
- A failure takes out half your range rather than all of it
- You can charge one while riding on the other
- And 1,728 watt hours in total, which is most of two kilowatt hours
On a machine claiming a hundred and twelve miles, how the capacity is packaged matters as much as how much of it there is.
A hundred and twelve miles, and how to read it
Longer than ninety eight per cent of our catalogue, and it is a figure measured at low assist on flat ground rather than a promise.
What it does mean in practice is that the pack is large enough that ordinary riding will not empty it in a day. That is the useful version of a claim like this.
The panel below turns the capacity into energy per mile and gives you the honest bands.
Sixty five newton metres and hydraulic brakes
Solid torque with hydraulic discs at both ends, on twenty inch fat tyres and an aluminium frame.
At eighty six pounds carrying up to 265 pounds, hydraulics are the right specification. One finger is enough and they do not fade on a long descent.
Nine hours on charge
That is what thirty six amp hours takes. Two packs means two chargers' worth of time unless you run them in parallel.
Treat it as a machine you charge overnight after a long day rather than one you top up between rides.
Read the weight limit
Two hundred and sixty five pounds, a hundred and twenty kilograms, which is lower than ninety six per cent of our catalogue.
That is rider plus everything on the machine, which already weighs eighty six pounds itself. For a machine with this much battery it is a modest figure, and it is worth checking against your own weight before you order.
Before the first ride
It arrives largely assembled and at eighty six pounds it is easier with two people.
- Fit the front wheel, handlebar and pedals
- Bed the hydraulic brakes in at walking pace
- Set tyre pressure: soft for grip, firmer for range
- Charge both packs to full before the first long ride
- Learn which pack the display is reading before you rely on it
One of the older listings on our shelf
This one predates our current supplier, so its specification table is shorter than the ones beside it and there is no component list to quote, because none was published.
Everything in the table is stated and nothing has been filled in. Ask us anything it does not answer and we will check.
Who it is for
Someone with land who wants to ride all day without thinking about the battery, and who is comfortably inside the 265 pound limit.
Buy it for the capacity. Thirty six amp hours split into two carryable packs is a genuinely practical arrangement rather than a number on a sheet.
- BRAND
- Onesport
- CATEGORY
- Fat Tire
- MOTOR POWER
- 500W
- RANGE
- 112 Miles
- SPEED
- 15.5 Mph
- BATTERY
- 36Ah
- WEIGHT
- 86 lbs
- CHARGING TIME
- 9 Hours
- BRAKE SYSTEM
- Hydraulic Disc
- FRAME MATERIAL
- Aluminium Alloy
- MAXIMUM LOAD
- 265 lbs
- INPUT VOLTAGE
- 48V
- TIRE SIZE
- 20 inch
- TORQUE
- 65 Nm
The ONESPORT OT08 PRO Dual Battery Mountain E-Bike states 500W, 112 Miles and 15.5 Mph, and below it is set against the DYU FF500 20 Inch Fat Tire Folding Electric Bike. Every figure the two disagree on is marked. Choose a different bike to compare it with whichever one you are also considering.
7 of 12 specifications differ. View DYU FF500 20 Inch Fat Tire Folding Electric Bike
- Are the electric bikes brand new?
- Yes. All electric bikes sold by BikTron are brand new, factory-sealed, and sourced directly from authorised manufacturers and official distributors.
- How do I choose the right electric bike for me?
- Pick a bike based on how you plan to ride. City bikes are great for commuting, folding bikes work well if you need compact storage, mountain bikes handle hills and mixed terrain, and cargo bikes are ideal for carrying shopping or loads. If you are not sure, our Bike Quiz can help.
- Are the batteries original and certified?
- Yes. Every electric bike battery is brand new and original from the manufacturer, with full safety certification and performance testing.
- Are the bikes tested before shipping?
- Yes. Each e-bike goes through a quality check before dispatch, covering electronics, brakes, motor response, and battery performance.
- Do electric bikes come with a warranty?
- Yes. All electric bikes from BikTron include a manufacturer warranty. Duration depends on the brand and model. Most bikes include a 12-month warranty as standard.
- How long does delivery take?
- Standard UK delivery usually takes 2 to 7 business days. Remote areas may take a little longer. You will receive a tracking link by email once your order is dispatched.
- Which payment methods do you accept?
- We accept Visa, Mastercard, PayPal, Apple Pay, Google Pay, and Klarna buy-now-pay-later. All payments are processed securely.
- Can I return my electric bike?
- Yes. You can ride the bike and still return it. Tell us within 30 days of delivery and we book the courier and collect it from your door. Contact us first and we will guide you through the process.
- Do the bikes need assembly?
- Most electric bikes arrive 85 to 90 per cent pre-assembled. You will usually need to attach the handlebars, pedals, and adjust the seat. A basic tool set is often included.
- Are BikTron electric bikes legal to ride in the UK?
- Yes. All bikes sold by BikTron that meet UK EAPC rules (250W motor, max 15.5 mph assisted speed, pedal-assisted only) are fully road-legal. You do not need a licence, tax, or insurance to ride them on public roads. Riders must be at least 14 years old.
- What about the electric scooters?
- Those are different, and the law treats them differently. A privately owned e-scooter cannot legally be ridden on a public road, pavement or cycle lane in the UK, whoever sold it. We sell ours for private land use only, with the landowner's permission, and every scooter product page says so. If you want something you can ride to work, choose an electric bike.
Secure checkout and fast UK delivery on every order.
- Free standard UK delivery on most bikes — 2 to 7 business days
- Express delivery may be available on request
- Full tracking included with every order
- Pay securely with Visa, Mastercard, PayPal, Apple Pay, Google Pay, or Klarna
- 0% finance available through Klarna at checkout
Before you order:
- Delivery is to UK mainland addresses — some remote areas may have a small surcharge
- Most bikes arrive 85–90% pre-assembled and include basic tools for setup
- If you are unsure about sizing or specs, contact us before you buy
Full details at Payment & Shipping.
Simple and fair terms so you can buy with confidence.
- 30-day return window — if the bike is not right for you, send it back
- Ride it. It needs to come back clean, undamaged and complete, with the charger, tools and manual
- A refund or replacement is issued after we receive and check the return
Please note:
- For a change of mind we book the collection and deduct its cost from your refund, and we tell you the amount before we book it
- If we sent the wrong item or it arrived faulty, we cover return shipping in full
- All bikes include a 12-month manufacturer warranty as standard
Full details at Returns & Refunds and Warranty.
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