VARUN S700-1 Review, City Electric Bike Full UK Test

The VARUN S700-1 is a city electric bike built for everyday UK rides. It has a step-through frame, a quiet motor, and a battery that hides inside the down tube. I tested it on busy streets, cycle paths, and a few gentle hills. This review shares honest thoughts on how it performs.

If you want a no-fuss e-bike for commuting or shopping trips, the S700-1 might be your match. It is not a mountain bike or a speed machine. It is a practical, legal 250W pedal-assist bike. I will cover range, comfort, build quality, and who should buy it. Let us dive in.

Unboxing and Assembly

What is in the box?

The VARUN S700-1 arrived in a sturdy cardboard box with plenty of foam padding. Inside, you get the main bike body, a pair of pedals, a charger, and some basic tools. A small printed manual walks you through the steps. It is all very straightforward.

The bike is mostly pre-built. You just need to attach the handlebar stem, front wheel, pedals, and seat post. All cables and wires are pre-routed. Even if you are not handy, it should take under half an hour. No specialist skills needed.

First checks

Before your first ride, make sure bolts are tight and tyres are pumped up. The brakes were slightly spongy out of the box, so I adjusted them. Also, give the battery a full charge. These simple steps will keep you safe and get the most from your new bike.

Once assembled, the S700-1 looks neat. The internal battery gives a clean, modern look. You would not guess it is an electric bike at a glance. The step-through frame makes it easy to hop on, even wearing work clothes.

Design and Build Quality

Frame and step-through geometry

The frame is aluminium alloy, so it feels light yet strong. The step-through design is a real bonus for riders with stiff joints or those who often carry panniers. You don't need to swing a leg high over the saddle. It makes start-stop city riding much easier.

Welds are smooth and paint finish is even. The bike comes in a muted silver-grey colour. It resists scuffs well after weeks of use. The overall weight is about 22 kg, which is reasonable for an e-bike with an integrated battery. You can still lift it onto a train if needed.

Lighting and practical touches

Integrated front and rear LED lights are built into the frame. They are powered by the main battery, so you never need separate batteries. A small LCD display on the handlebar shows speed, battery level, and assist mode. It is simple but easy to read in sunlight.

You also get a sturdy rear rack rated for 25 kg. It is perfect for pannier bags or a basket. Mudguards keep you dry on wet roads. A kickstand comes as standard. These thoughtful details make the S700-1 ready to ride straight out of the box. If you want a lighter city bike, check out the DYU C2 City Electric Bike.

Motor and Performance

250W rear hub motor

The S700-1 uses a 250W brushless rear hub motor. That is the maximum legal power for an EAPC in the UK under government rules. It provides smooth, quiet assistance up to 15.5 mph. There is no throttle – it is purely pedal assist. That means you must pedal to get power.

On flat ground, the motor kicks in gently. It does not jerk or surprise you. I set off from traffic lights with ease, keeping up with city traffic. The five assist levels let you fine-tune effort. Level one gives a gentle nudge, while level five gives full power for hills.

Hill climbing test

I tackled a steady 6% gradient on a local road. In top assist, I climbed comfortably without sweating. It is not a mountain goat, but it manages most UK urban slopes well. For steeper 10% climbs, you need to work a bit. The motor maintains support but the pace drops. Still, it beats a normal bike hands-down.

The cadence sensor could be more responsive. There is a short delay before assist kicks in when you start pedalling. It is not a deal-breaker, just something to get used to. For a similarly smooth motor with a sportier feel, see the AAIRSK SU7 City Electric Bike.

Battery and Real-World Range

Integrated 36V 10Ah battery

The battery is neatly tucked inside the down tube. You can charge it on or off the bike. A full charge takes about five to six hours. The locking mechanism feels secure. LED indicators on the battery itself let you check capacity when it is removed.

Capacity is 360 Wh. The manufacturer claims a range of up to 40 miles. In real UK conditions, that number is a bit lower. I tested it on a mix of cycle paths, gentle hills, and stop-start city roads.

My range findings

On mostly flat terrain in assist level three, I managed about 32 miles. Using level five more aggressively cut it to 25 miles. The range will vary with your weight, wind, and tyre pressure. For a typical 10-mile round-trip commute, you will easily get two days between charges.

Remember, UK law limits assisted speed, not range. The battery performed consistently in temperatures down to 5°C. Cold weather does reduce range slightly, as with all e-bikes. To maximise battery life, avoid storing it fully depleted for long periods.

Ride Comfort and Handling

Saddle and suspension

The stock saddle is wide and padded. It suits short to medium rides well. After an hour, I still felt fresh. The seat post has a suspension element that absorbs small bumps. There is no front suspension fork, so larger potholes do jolt a bit. It is fine for smooth tarmac and well-maintained cycle paths.

Handlebars are swept back for an upright riding posture. This takes pressure off your wrists and back. You get a good view of traffic. The step-through frame also adds to the relaxed stance. Overall, the S700-1 is a very comfortable commuter.

Tyres and grip

The 700c wheels are fitted with 38mm semi-slick tyres. They roll fast on roads and have enough tread for light gravel. I felt confident in wet conditions, though I would avoid icy patches. The puncture protection is decent – I had no flats in two months of testing.

Braking is handled by mechanical disc brakes. They offer reliable stopping power in both dry and wet weather. The levers are adjustable for small hands. They do lack the bite of hydraulic brakes, but they are easy to maintain and perfectly safe at city speeds. Browse all city bikes to compare other models with different brake systems.

Components and User Experience

Gears and display

The 7-speed Shimano Tourney derailleur provides enough range for flat and rolling terrain. Shifting is crisp enough, though not as refined as higher-end groupsets. It gets the job done without fuss. You can also adjust the assist level on the fly using the handlebar controls.

The LCD display shows speed, trip distance, and battery bars. There is no backlight for night riding, but a small button turns on the backlight temporarily. It would be nice if it stayed on. The controls are intuitive, even with gloves. You will get used to them in minutes.

Everyday practicality

The S700-1 excels as a daily workhorse. The rear rack and mudguards come fitted. I loaded a single pannier with groceries and the bike handled fine. The kickstand is stable, even when loading up. The integrated lights mean you never forget batteries. Just ride and go.

For those who need an even more compact option, the ENGWE L20 Compact City Electric Bike is worth a look. It folds down for storage, but the S700-1 is better if space is not an issue and you want a full-size ride. It really is a car replacement for short trips.

UK Law and Safety

EAPC compliance

Riding the VARUN S700-1 on UK public roads is fully legal, as long as you follow the rules. The motor is 250W and assistance cuts out at 15.5 mph. That meets the Electrically Assisted Pedal Cycle (EAPC) definition from the UK government. You do not need a licence, insurance, or number plate.

You must be 14 years old or over to ride one. It is also legal on cycle paths and bridleways. It is not allowed on pavements or footpaths. Helmets are not compulsory, but I strongly recommend wearing one. Check RoSPA for safety tips.

Safety features

The built-in lights keep you visible after dark. The rear reflector and pedal reflectors are standard. I would add a high-vis vest for extra peace of mind on busy roundabouts. The bell is a bit quiet – a louder horn is a cheap upgrade.

Finally, make sure your tyres are always pumped to the recommended pressure. Under-inflated tyres hurt range and handling. A quick once-over before each ride takes seconds. Stay safe out there.

Who Should Buy the VARUN S700-1?

This bike is ideal for city commuters who want a reliable, no-nonsense e-bike. If your route is mostly paved and under 10 miles each way, it fits perfectly. The step-through frame makes it brilliant for those with mobility concerns or frequent stops. It also suits anyone who hates fiddling with complex gadgets.

It is less suited to off-road adventures or very steep hills. If you live in a hilly area, you may want a mid-drive motor. But for typical UK towns and cities, the S700-1 is a solid choice. For a budget alternative with a front basket, see the DYU C2. Both are legal and fun, but the VARUN has a stealthier look.

You can also explore all our electric bikes to find your perfect match. We have mountain, folding, and cargo options too.

Verdict and Features

The VARUN S700-1 is a well-rounded city e-bike at a fair price. It is not the cheapest, but the integrated battery and included lights add real value. The ride is comfortable, the range is honest, and it looks great. It does what a city e-bike should do without any fuss.

Buy the VARUN S700-1 City Electric Bike from Biktron if you want a dependable urban companion. For another take on a different e-bike, read our AAIRSK GT900 Review to compare what a slightly more budget model offers. Meanwhile, here are the key pros and cons.

• Smooth, quiet motor
• Hidden battery with clean looks
• Full set of practical add-ons (lights, rack, mudguards, kickstand)
• Comfortable upright ride
• Good range for daily commutes

• Cadence sensor has slight delay
• No backlit display as standard
• Mechanical brakes lack hydraulic bite
• Suspension only in seat post

Overall, this is an e-bike that makes cycling easy. If you want a bike that just gets you there, day after day, the S700-1 should be on your shortlist.