Aairsk S800 Electric Bike - Removable Battery

The Aairsk S800 pairs a 250W motor with a removable 36V 10Ah battery — 26-inch wheels, front suspension and Shimano 7-speed gearing, in cyan. £529.99 with free UK delivery.

Held in UK stock, so there's no import wait and no customs charge when it arrives — typically 3–5 working days, often faster.

Why the removable battery matters

You can lift the battery off and carry it indoors to charge, which is genuinely useful if you keep the bike in a shed, garage, hallway or communal store with no power nearby. It also means the most expensive component doesn't sit outside with the bike overnight.

In winter it matters more — a lithium battery left somewhere freezing loses range, and charging it while still cold can cause permanent damage.

How fast does it go?

Assistance cuts out at 25km/h (15.5mph), the UK legal limit for an electrically assisted pedal cycle. You can pedal faster under your own effort; the motor just stops helping past that point.

How far will it go on a charge?

The 36V 10Ah battery gives an estimated 30–35km (19–22 miles) on throttle alone, or 35–55km (22–34 miles) with pedal assist. Contributing your own pedalling makes a substantial difference.

Hills, cold weather, tyre pressure, load and riding style all reduce range, so plan against the lower figure. A full charge takes around 5–6 hours.

How long will the battery last?

Expect several hundred full charge cycles — typically around 500–800 for a lithium-ion pack — before capacity noticeably drops. For most riders that's several years. Charge it indoors, avoid leaving it flat or at 100% for weeks at a time, and let it reach room temperature before charging after a cold ride.

Is it road legal in the UK?

The S800 is built to the 250W EAPC specification with a 25km/h cut-off, which is what UK law requires for public roads and cycle paths without registration, tax, insurance or a licence.

It's supplied with a twist throttle, and throttle operation is where legality depends on the delivered configuration. Check the current GOV.UK EAPC rules before riding on roads, cycle paths or bridleways.

Specifications

Range figures are supplier estimates rather than guarantees.

Before you order

• Confirm the frame fit, rider position and maximum load suit you.
• Check the battery, charger and throttle configuration on delivery.
• Review current stock and delivery information shown on this page.

Delivery and returns

• Free UK mainland delivery from UK stock — typically 3–5 working days, often faster.
• 12-month warranty.
• 14-day right to cancel under the Consumer Contracts Regulations 2013, plus your full rights under the Consumer Rights Act 2015.
• Sold by Horizon and Co Solutions Ltd, a UK registered company (No. 16942003, England and Wales).

Compare before you buy

The Aairsk S600 is the same concept with a larger 13Ah battery for longer trips. Browse all road-legal 250W electric bikes or read our e-bike buyer's guide.