Yes, the battery is fully removable, making it easy to charge either on or off the bike. A full charge typically takes about 4–6 hours.

Our batteries are designed for around 800–1000 full charge cycles under proper use and maintenance. This usually translates to several years of daily riding, depending on usage habits. After this, the battery will typically retain about 70–80% of its original capacity.

Under proper maintenance, a lithium e-bike battery typically lasts 3–5 years. To maximize its lifespan, follow these key tips:

• Avoid Heat Exposure: Store your battery in a cool place, below 20°C, and keep it out of direct sunlight. High temperatures, especially when fully charged, accelerate capacity loss.
• Store Partially Charged: For long-term storage, maintain charge between 40%–80%. Never store a fully depleted or fully charged battery for extended periods, as both can cause permanent damage.
• Avoid Full Discharges: Lithium batteries prefer partial rather than full discharges. Regular top-ups are better than deep cycling. There’s no memory effect, so frequent charging is safe.

In winter, avoid charging if the battery is below freezing. Let it warm up first. Cold weather temporarily reduces range but doesn’t harm the battery if used correctly.

Yes, the bike is designed with standard mounting points that support common accessories such as rear racks, child seats, panniers, and baskets. For safety and best compatibility, we recommend using accessories that are either provided by us or verified to be compatible with our frames.

Yes. Our e-bikes are designed to comply with U.S. Class 2 and Class 3 e-bike standards, depending on the model. This means they typically operate with pedal assist (up to 28mph for Class 3, or 20mph for Class 2) and may include throttle functions where permitted.

Yes, all of our e-bikes and batteries have been certified for safety: -Our frames and components comply with ISO 4210 standards, ensuring international-level safety and reliability.- Every model we produce complies with the UL 2849 standard, ensuring that the complete electrical system—including the battery management system (BMS), motor, controller, wiring, and power inlet—meets strict safety requirements. - All of our batteries are certified to the UL 2271 standard, which specifically covers safety aspects such as fire resistance, electric shock protection, and short-circuit prevention. - These certifications guarantee that every product we deliver is compliant with internationally recognized safety standards. Regarding documentation: we can provide Certificates of Compliance and test reports upon request for review by qualified parties, subject to confidentiality and licensing requirements.

For the taillight issue, please follow the below guide to troubleshooting.

1. Check the cable to the rear light is properly connected;
2. The USB cable should as well as the other cables on this bike;
3. Carefully align the internal notch and pins (and external arrows) and press each side directly together, without twisting, to fully seat the connection.

The cover of the charge port is made of rubber so that it will deform with regular use.Here are two solutions for you.

• Cut off the original cover and find a velcro to replace the original cover.
• You can cut one or two more V-shaped notches on the cover so that you can get the cover inside again.
  

If this phenomenon only happens very occasionally and is too rare to take any demonstration video, then it is not a problem.It is the protection system for the motor as a default design.

For your information,The motor shuts off or makes noise when the rider climbs at low speed or when he or she starts with a throttle on a slope.It's a normal phenomenon and the motor is not defective. On a slope, low speed or slow start might sometimes lead to the shut-off, which is actually protection designed to maintain the motor in great function. To avoid this, you can increase the speed when climbing and pedal a little when starting on a slope. No need for further diagnosis on this.

1. Check for sharp objects like glass, nails, or thorns in the tire and tube. Run your hand carefully along the inside of the tire to feel for embedded debris.
2. Inspect the tire for wear, cracks, or damage that may increase puncture risk. Consider replacing it if it appears worn out.
3. Examine the rim tape covering the spoke holes. If it’s damaged or misplaced, it could puncture the tube.
4. Ensure the valve is tight and not leaking. A faulty valve can lead to air loss.
5. Inflate the tire to the recommended pressure of 25 PSI. Under-inflation may cause pinch flats, while over-inflation increases puncture vulnerability.
6. If flats persist, replace the inner tube. Multiple patches can weaken it over time.

The moisture inside the display may be caused by too much humidity in the room and the temperature difference. You can use a lamp to dry the moisture in the LCD display or put it in the sun for a few hours and it will slowly disappear. Seriously available try a hair dryer.
Then you will get the display working normally.

With the 48V 15Ah Samsung battery, Lyvia delivers a real-world range of 70–90 miles with pedal assist, depending on rider weight, terrain, and PAS level. Range on throttle-only mode is 45–55 miles.

- Uses high-grade Samsung lithium cells
- Long cycle life under daily commuting
- Stable performance in low temperatures
- Fully removable battery for convenient indoor charging
- Lishui smart controller reduces energy loss during stop-and-go city riding

A full charge takes 5–7 hours using the included smart charger. Samsung cells ensure long cycle life and stable discharge under high loads.

- 20 mph (32 km/h) throttle (factory Class 2 mode)
- Up to 28 mph (45 km/h) with pedal assist after unlocking Class 3 mode
- The controller provides smooth, linear acceleration designed for city commute

Lyvia uses a rear-hub 750W motor (peak 1000W) tuned for efficient urban riding.
- Peak torque: 75 N·m, optimized for hill climbing and fast starts
- Smooth & quiet operation for city environments

Lyvia supports both cadence and torque sensor configurations. Riders can choose between:
- Cadence mode: relaxed, effortless pedaling
- Torque mode: more natural, responsive riding

Lyvia features a 3.5-inch LCD color display with:
- PAS levels (1–7)
- Speed / Trip / Odometer
- Battery status
- Range estimate
- Error diagnostics

Lyvia supports up to 350 lbs (159 kg) thanks to its reinforced commuter frame and heavy-duty wheelset.

Lyvia comes with Kenda 27.5×2.2 all-terrain tires, providing:- High grip on wet roads
- Comfort on asphalt & bike paths
- Stability over potholes or rough pavement - Lower rolling resistance for long commuting efficiency

- Integrated front & rear LED lights
- Wheel reflectors for 360° visibility
- Heavy-duty aluminum kickstand
- High-strength commuter frame

Lyvia uses a Shimano 8-speed system paired with a 48T alloy chainring, offering:
- Smooth shifting
- Efficient cadence at higher speeds
- Wide gear ratio range for city hills & flat routes

No. The bike arrives 85% pre-assembled. Final setup includes:
- Installing the handlebar
- Mounting the front wheel
- Adjusting seat & pedals Typical setup time: 20–30 minutes.

The total bike weight is 53 lbs (24 kg) — ideal for commuter e-bikes with high-density batteries and reinforced frames.

With the 48V 20Ah Samsung battery, Voltra delivers a real-world range of:
- 80–100+ miles with pedal assist, depending on rider weight, terrain, and PAS level
- 45–60 miles on throttle-only mode
The Lishui smart controller optimizes current output to reduce energy loss on hills and low-speed starts.

The bike uses Samsung 21700 cells, offering:
- High energy density- Long cycle life
- Stable performance in lowt emperatures
The battery is fully removable, allowing safe indoor charging.

Charging the 48V 20Ah pack takes 5–7 hours with the included smart charger. Samsung cells ensure long cycle life and stable discharge at high loads.

Voltra uses a rear-hub 750W motor (peak 1000W) tuned for high torque.
- Peak torque: 96 N·m, ideal for steep climbsSmooth acceleration curve due to the Lishui controller’s optimized field-oriented control

Sensor-swap allows the bike to switch between cadence sensor and torque sensor systems (depending on configuration), giving riders a choice between:
- Cadence mode: relaxed, effortless riding
- Torque mode: more natural, responsive pedaling
This helps riders tailor the riding experience for city use, trails, or long-distance.

Lyvia features a 3.5-inch LCD color display with:
- PAS levels (1–7)
- Speed / Trip / Odometer
- Battery status
- Range estimate - Error diagnostics

Voltra supports up to 400 lbs (181 kg), thanks to a reinforced frame, fat-tire structure, and heavy-duty spokes.

The bike is equipped with hydraulic disc brakes with 180mm rotors. Brake features include:
- Dual motor cut-off sensors (throttle & PAS)
- Strong braking performance under emergency stops - Excellent modulation for urban traffic

The bike comes with Kenda 26×4.0 all-terrain tires, providing stability on:
Snow
Sand
Gravel
Wet roads
Urban terrain with potholes or curbs

- Integrated front & rear LED lights
- Wheel reflectors for 360° visibility
- Heavy-duty aluminum kickstand
- High-strength commuter frame

It features a Shimano 8-speed system paired with a 48T alloy chainring, giving riders a wide gear range for:
- Hill climbing
- High-speed cruising
- Off-road transitions

No. The bike arrives 85% pre-assembled. Final setup includes:
- Installing the handlebar
- Mounting the front wheel
- Adjusting seat & pedals
Typical setup time: 20–30 minutes.

Total bike weight: 85 lbs (38.5 kg)—standard for fat-tire bikes with high-capacity batteries and reinforced frames.