V20 Electric Bicycle Instruction Manual

Image: A black electric bicycle with thick tires, a prominent battery pack mounted on the frame, and a classic round headlight. Below the image is a warning box.

⚠️ Attention
Dear users, according to the relevant national regulations, please do not use electric bicycles before carefully reading the instructions and understanding the performance of electric bicycles. Please properly keep this manual and the product certificate of the vehicle. Do not set the display without consulting the seller!

Important Safety Information

WARNING: Electric bikes can be dangerous. The user or consumer assumes all risk of personal injuries, damage, or failure of the bicycle or system and all other losses or damages. It is important to understand your new bicycle. Reading this manual before your first ride will help you get better performance, comfort, and enjoyment. Your first ride should be in a controlled environment, away from traffic and obstacles.

1. Always Wear A Helmet
Helmets significantly reduce head injuries. Always wear a helmet that complies with your state laws. Check with your local police department for requirements. Wear bright reflective clothing to be more visible. Keep reflectors clean and wear eye protection. Check state laws for other required protective gear.

2. Know Your E-bike
Your new E-bike has many features. Read this manual thoroughly to understand how these features enhance your riding pleasure and safety.

3. Ride Within Your Limits
Take it slow until you are familiar with riding conditions. Be especially careful in wet conditions as traction is reduced and brakes are less effective. Never ride faster than conditions warrant or beyond your abilities. Avoid alcohol, drugs, fatigue, and inattention, as these can impair judgment and safety.

4. Keep Your E-bike In Safe Condition
For your safety and enjoyment, inspect and maintain your E-bike regularly. Follow the inspection and maintenance guidelines. Check critical safety equipment before each ride.

V20 Parts Identification

Diagram showing the V20 electric bicycle with labels pointing to: Handlebar, Display, Bike Frame, LED Headlight, Front Fender, Tire, Battery, Disc Brake Rotor, Front Fork, Controller, Pedals, Chain, Seat, Rear Light, Shock Absorber, Bike Motor. Close-up views of the handlebar controls show: Light control, Speed mode, Power button, Steering light switch, Horn, and Gear adjustment.

Display Interface

The display shows SPEED, BATTERY level, ODO/TRIP/VOL/CUR indicators, AVG (average speed), MAX (maximum speed), and current SPEED. Icons indicate CRUISE CONTROL, BRAKE, PAS (Pedal Assist System), and WALK mode.

Instructions:

  1. Press and hold the power button for 3 seconds to turn the machine on and off.
  2. Press buttons "+" and "-" together to enter setting pages (consult seller for details).
  3. Press power button and "+" to see average speed, max speed, actual speed.
  4. Press power button once to see trip time, one-trip mileage, ODO, VOL, CUR.
  5. Press button "-" for 5 seconds to activate walking mode.

Configuration Table

Item NameProduct Specification
Vehicle Size164*68*115(CM)
Packing Size142.5*27*86.5(CM)
ColorBlack
Frame MaterialSteel
Net Weight38kg
Gross Weight46kg
Max. Support Weight150kg
Max Speed25Km/h
Inner Tire Pressure20PSI/140KPA
Model No.V20
ChargerAC-DC 54.6V 2A 100-240V AC DC5.5X2.1
Battery48V 15.6AH
Brake SystemFront and rear disc brake
Tire Size20*4.0
PedalAluminum alloy pedal

Pre-Riding Safety Checklist

Notice: Before every riding, and after every 25-45 miles, follow this checklist.

Safety CheckBasic Steps
1. BrakesEnsure front and rear brakes work properly.
Check brake pads for wear.
Ensure brake pads are correctly positioned.
Ensure brake control cables are lubricated, adjusted, and show no wear.
Test brake levers are firm and that brake, motor cutoff functions, and brake light are working.
2. Wheels and TiresEnsure tires are inflated to recommended limits.
Ensure tires have good tread, no bulges or excessive wear.
Ensure rims run true, with no obvious wobbles or dents.
Ensure all wheel spokes are tight and not broken.
Check axle nuts and front wheel quick release skewer for tension and security.
3. SteeringEnsure handlebar and stem are correctly adjusted and tightened.
Ensure proper steering.
Ensure handlebar is set correctly in relation to forks and direction of travel.
4. ChainEnsure the chain is oiled, clean, and runs smoothly.
Extra care is required in wet, salty, or dusty conditions.
5. BearingsEnsure all bearings are lubricated, run freely, and show no excess movement or grinding.
Check headset, wheel bearings, pedal bearings, and bottom bracket bearings.
6. Cranks and PedalsEnsure pedals are securely tightened to the cranks.
Ensure cranks are securely tightened and not bent.
7. DerailleursCheck that the derailleur is adjusted and functioning properly.
Ensure shifter and brake levers are attached securely.
Ensure all brake and shift cables are properly lubricated.
8. Frame, Fork, and SeatCheck that the frame and fork are not bent or broken. Replace if damaged.
Check that the seat is adjusted properly and seat post quick release lever is securely tightened.
9. Motor Drive Assembly and ThrottleEnsure hub motor is spinning smoothly and motor bearings are in good working order.
Ensure all power cables to the hub motor are secured and undamaged.
Make sure hub motor axle bolts and torque arms/washers are in place.
10. BatteryEnsure battery is charged before use.
Ensure there is no damage to the battery.
Lock battery to frame and check security.
Charge and store battery in a dry location (50°F-77°F).
Let bike dry completely before using.
11. Electrical CablesLook over connectors to ensure they are fully seated, free from debris or moisture.
Check cables and cable housing for obvious signs of damage.
Ensure headlight, taillight, and brake light are functioning properly and unobstructed.
12. AccessoriesEnsure all reflectors are fitted and not obscured.
Ensure all other fittings are secured and functioning.
Inspect helmet and safety gear for damage.
Ensure rider is wearing helmet and required safety gear.
Ensure mounting hardware for racks/fenders is secure.
Ensure fenders have no cracks or holes.

Your cables, spokes, and chain will stretch after an initial break-in period of 50-100 miles (80-160km), and bolted connections can loosen. Always have a certified mechanic service your E-bike after the break-in period. Regular inspections and tune-ups are important for safety and enjoyment.

Drive Safety

Please abide by traffic rules and safe speed control (default safe speed is 30km/h). Familiarize yourself with this manual and practice in an empty, flat area to master driving essentials.

DANGEROUS: Do not use the electric bike if you are unfamiliar with its operation. Do not lend it to inexperienced riders. Strictly enforce traffic rules. Avoid drinking/driving and one-handed riding.

Rain and Snow Weather Driving: Be extra cautious. Damp ground is dangerous. Avoid speed and brake in advance. Do not ride through water that reaches the rear wheel hub, as it can cause internal short circuits and damage electrical components.

Check before riding:

  1. Support the bike, check rear wheel off ground, ensure power switch is normal.
  2. Check indicator lights and power.
  3. Check horn and lights are functioning.
  4. Adjust saddle and seat post.
  5. Check brake levers and ensure brakes are reliable and flexible. Increase braking distance in wet/snow conditions.
  6. Check tire pressure, look for cracks, wear, or embedded objects. Tire issues can cause steering ineffectiveness or tire bursts.
  7. Check front/rear screw locks and chain condition.
  8. Check shaft fastening and handlebar clamp reliability.

Drive Properly:

  1. Stand by the bike, check it thoroughly.
  2. Turn on the power switch.
  3. When seated, slowly turn the speed control (right/counter-clockwise) to start, gradually increasing speed.
  4. When braking, return the speed control quickly, then apply brakes smoothly. Avoid sudden braking or fierce steering, which can cause side slip or overturns.

On the way:

  1. Abide by traffic rules, stay in the slow lane, do not ride with people.
  2. Wear a safety helmet and follow safety precautions.
  3. Start with slow acceleration to avoid excessive current draw. Use auxiliary pedal if needed.
  4. For battery/motor maintenance, start-up, and climbing, use pedal power.
  5. Use economic speed and pedal power for safety.
  6. Avoid sudden motor speed changes during braking to prevent overload.
  7. Use human power on mud or rough roads.
  8. Increase braking distance in rain/snow. Focus and ride carefully to prevent side slips.
  9. Uphill or against wind, use pedal power to avoid exceeding current rating, which can damage components.
  10. Controller has under-voltage protection to cut power and protect battery life.

Parking and Matters Needing Attention:

  1. Turn off the power switch when getting off to prevent accidental movement.
  2. Park on flat ground, lock the kickstand, and turn off the power.
  3. Regular maintenance and cleaning are important for safety and bike condition.

Assembly Instructions

These steps are a general guide. We recommend consulting a certified, reputable bike mechanic for assembly, repair, and maintenance.

Step 1: Unpack e-bike
Carefully unpack the e-bike from the carton and set out all contents. Remove protective packaging material. Please recycle packaging materials like cardboard and foam.

Included items:

Visual guide for vehicle installation:

1. Check carton: Ensure the outer carton is complete and unpack it.

2. Take out frame: Remove the bicycle frame from the packaging.

3. Take out accessories: Remove the accessories and tooling kit.

4. Unscrew: Use the M5 Allen wrench to unscrew the screw.

5. Remove cover: Unscrew the screw and remove the trim cover.

6. Pull shelf: Pull out a fixed shelf.

7. Position steering: Put the steering in front.

8. Install retainer: Install retainer and top cover, then tighten all screws.

9. Remove lid: Loosen the screws and remove the lid.

10. Install front: Install the front and tighten all screws.

11. Take out wheels: Take out the wheels and accessories.

12. Install wheels: Install the wheels, paying attention to the order of accessories.

13. Tighten screws: Tighten the screws on both sides.

14. Install fender: Install the fender and tighten all screws.

15. Identify pedals: Note 'R' for Right Pedal and 'L' for Left Pedal.

16. Install pedal: Install the pedal and tighten the screw.

17. Fill tires: Fill the tires with air.

18. Install pedals: Install the pedals and tighten the screws.

19. Install dashboard: Install the dashboard and tighten all screws.

20. Connect cables: Connect the ports of cables according to the direction of the arrow.

21. Remove sleeve: Remove the handle sleeve on the right.

22. Install throttle: Install throttle and short handle sleeve.

23. Install line: Install the line and pay attention to the alignment of the hole.

24. Power on: Press the power button for 3 seconds to turn it on.

Gear Operation

Multi-speed bicycles use internal or derailleur gear systems. WARNING: Improper shifting can jam or derail the chain, leading to loss of control or a crash. Always ensure the chain is fully engaged in the desired gear before pedaling hard.

Avoid shifting while standing up on the pedals or under load.

To shift properly, pedal the bicycle with little pressure on the pedals, and move the shifter one gear at a time. Ensure the chain is fully engaged in that gear before applying more pressure. For bicycles with 3 front chain rings, avoid "Cross Chaining" (smallest rear cog with smallest front ring, or largest rear cog with largest front ring). These positions put the chain at an extreme angle, causing premature wear to the drivetrain.

Charging Procedure

1. Remove the rubber cover on the charging port on the opposite side of the battery from the key switch.

2. With the battery on or off the bike, place the charger in a flat, secure place, and connect the DC output plug from the charger (round barrel connector) to the charging port on the side of the battery.

3. Plug the charger into the outlet (100-240-volt plug) to the power outlet. Charging should initiate and will be indicated by the LED charge status light on the charger turning red.

4. Once fully charged, indicated by the charging indicator light turning green, unplug the charger from the wall outlet first, then the charging port, and proceed to remove the charger.

Attention:

Before charging, make sure the charger light faces upwards. Full charge normally takes 3-7 hours. Charge the battery in a clean and safe place and do not overcharge.

Indicator Lights: Red light means the battery is charging. Green light means the battery is full charged.

Battery Charging Information

Always charge your battery in temperatures between 50°F - 77°F (10°C - 25°C) and ensure the battery and charger are not damaged before initiating charge. If you notice anything unusual while charging, please discontinue charging and contact for help.

Charging the battery fully normally takes 3-7 hours. In rare cases, it may take longer for the battery management system to balance the battery, particularly when the bike is new or after long periods of storage.

The battery can be recharged on or off the bike.

Do not charge the battery for more than 12 hours at a time or leave a charging battery unattended.

Ensure the charger lights face upwards. The charge indicator lights will stay red while the battery charges and turn green when charge is complete.

Always charge in dry, indoor locations away from direct sunlight, dirt, or debris. Charge in a clear area away from potential tripping hazards. Do not use the charger inverted, as this can inhibit cooling and reduce charger lifespan.

The battery should be recharged after each use. There is no memory effect, so charging after short rides will not cause damage.

Ensure the battery is turned off whenever it is being removed or off the bike. Avoid damaging the exposed connector terminals and keep them clear of debris.

Do not touch the "+" and terminal contacts on the bottom of the battery when it is removed from the bike.

Maintenance

Basic Bike Care:

To ensure safe riding conditions, properly maintain your e-bike. Follow these guidelines and see a certified, reputable bike mechanic at regular intervals.

  1. Properly maintain batteries by keeping them fully charged when between uses of up to two weeks apart. Refer to the Long-Term Battery Storage section for longer periods.
  2. Never immerse or submerge the bike or any components in water or liquid, as the electrical system may be damaged.
  3. Periodically check wiring and connectors for damage and security.
  4. To clean, wipe the frame with a damp cloth. If needed, apply a mild non-corrosive detergent mixture to the damp cloth and wipe the frame. Dry by wiping with a clean, dry cloth.
  5. Store under shelter; avoid leaving the bike in the rain or exposed to corrosive materials. If exposed to rain, dry your bike afterwards and apply anti-rust treatment to the chain and other unpainted steel surfaces.
  6. Riding on the beach or in coastal areas exposes your bike to salt, which is very corrosive. Wipe down your bike frequently and wipe or spray all unpainted parts with anti-rust treatment. Damage from corrosion is not covered under warranty.
  7. If the hub and bottom bracket bearings have been submerged in water or liquid, they should be taken out and re-greased to prevent accelerated bearing deterioration.
  8. If the paint has become scratched or chipped, use touch-up paint to prevent rust. Clear nail polish can also be used as a preventative measure.
  9. Regularly clean and lubricate all moving parts, tighten components, and adjust as required.

Troubleshooting

SymptomsPossible CausesMost Common Solutions
1It doesn't work1. Insufficient battery power
2. Faulty connections
3. Battery not fully seated in tray
4. Improper turn on sequence
5. Brakes are applied
1. Charge the battery
2. Clean and repair connectors
3. Install battery correctly
4. Turn on bike with proper sequence
5. Disengage brakes
2Irregular acceleration and/or reduced top speed1. Insufficient battery power
2. Loose or damaged throttle
1. Charge or replace battery
2. Replace throttle
3When powered on, the motor does not respond1. Loose wiring
2. Loose or damaged throttle
3. Loose or damaged motor plug wire
4. Damaged motor
1. Repair and/or reconnect
2. Tighten or replace
3. Secure or replace
4. Repair or replace
4Reduced range1. Low tire pressure
2. Low or faulty battery
3. Driving with too many hills, headwind, braking, and/or excessive load
4. Battery discharged for long period without regular charges (aged or damaged)
5. Brakes rubbing
1. Adjust tire pressure
2. Check connections or charge battery
3. Assist with pedals or adjust route
4. Replace the battery
5. Adjust the brakes
5The battery won't charge1. Charger not well connected
2. Charger damaged
3. Battery damaged
4. Wiring damaged
1. Adjust the connections
2. Repair or replace
6Wheel or motor makes strange noises1. Damaged motor bearings
2. Damaged wheel spokes or rim
3. Damaged motor wiring
1. Replace
2. Repair or replace
3. Repair or replace motor
7Sensor Issue1. Sensor loose
2. Sensor or cable broken damaged
1. Adjust the connections
2. Repair or Replace
8Pre-load and turn off bike suddenly1. Battery or motor over heat protection
2. Battery or controller cable loose
3. Battery or controller cable damaged
1. Wait 1-3 minutes to restart e-bike
2. Adjust the connections
3. Repair or Replace

Safety Notes

These safety notes provide additional information on the safe operation of your E-bike and should be closely reviewed. Failure to review these notes can lead to serious injury or death.

All users must read and understand this manual before their first use of the E-bike. Additional manuals for components may also be provided and should be read.

Ensure you comprehend all instructions and safety notes/warnings.

Ensure the bike fits you properly before your first use. You may lose control or fall if the bike is too big or too small. Always wear an approved bicycle helmet whenever using this product and ensure all helmet manufacturer instructions are followed for fit and care. Failure to wear a helmet may result in serious injury or death.

Ensure correct setup and tightening is performed on your bike before first using it, and check the setup, tightening, and condition regularly.

It is your responsibility to familiarize yourself with the laws and requirements of operating this product in your area.

Ensure handlebar grips are undamaged and properly installed. Loose or damaged grips can cause loss of control.

Do not use this product with standard bike trailers, stands, vehicle racks, or accessories that E-bikes has not tested for safety and compatibility. Contact E-bikes to check compatibility.

Off-road riding requires close attention, specific skills, and presents variable conditions and hazards. Wear appropriate safety gear and do not ride alone in remote areas. Check local rules and regulations for off-road E-bike riding.

Engaging in extreme riding is extremely dangerous and should be avoided. Although some media depict extreme riding, it is not recommended nor permitted, and you can be seriously injured or killed if you perform it.

Bikes and bike parts have strength and integrity limitations. Extreme riding should not be performed as it can damage components or lead to dangerous situations resulting in injury or death.

Failure to perform and confirm proper installation, compatibility, operation, or maintenance of any component or accessory can result in serious injury or death.

It is recommended to not ride at night if avoidable. Ride at night only if necessary.

Models: V20 3.0 Electric Bike, 3.0 Electric Bike, Electric Bike, Bike
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