BOB Best of Bikes Electric Scooter

Chapter I: Introduction to the Product

The electric bike is designed with 3D technology, featuring a pleasant modeling, fashionable and casual appearance, unique style, simple yet extraordinary structure, and a noble and amiable nature. Key characteristics include:

• Lithium battery: Passed UL and CE safety tests, reliable, with a service life three times that of lead-acid batteries and one-third the weight. It offers high voltage, powerful gradeability, quick acceleration, and is recognized as green energy with no pollution.
• Battery compartment: Located below the pedal, it provides balanced force, small volume, and high safety and secrecy.
• Motor: Constructed with optimal magnetic steel material, high-quality silicon steel sheet, thicker coil, precision bearing, and a thick, large motor shaft for power, strength, and high bearing capacity.
• Tyre: Features 3D virtual design and assembly, automatic numerical control bending pipe with advanced technology, and robot welding. The oversized pedal with polishing and anti-skidding properties ensures safety and comfort for sitting or standing, and convenient cargo carrying.
• Frame: Utilizes 3D virtual design and assembly, automatic numerical control bending pipe with advanced technology, and robot welding. The oversized pedal with polishing and anti-skidding properties ensures safety and comfort for sitting or standing, and convenient cargo carrying.
• Disc brake: Small and exquisite oil disc brake with an aluminum alloy forging pump body and advanced CNC processing technology for flexible braking and free action.
• Handlebar: Streamlined human body engineering leisure design with tough and firm characteristics for free and easy control.
• Rolling handle: Features soft rubber molding injection for comfortable hand grip.
• Seat cushion: Made with a brand new plastic seat plate, high elastic foam, advanced anti-slip leather, elaborately-designed appearance, perfect fabrication, and proper seat height for comfort during extended sitting and riding.
• Intelligent charger: Fully automatic portable design requiring no monitoring during charging. It operates with a 220V AC power supply.

Chapter II: Name of Parts of the Complete Vehicle and Outline Drawing

The electric scooter comprises the following parts:

• Electric quantity indication
• Power lock
• Handlebar pipe
• Bell
• Handlebar rubber
• Speed regulating rolling handlebar
• Front brake handle
• Front fender
• Front tyre
• Front brake disconnecting base
• Connecting seat
• Battery box
• Front brake pump
• Rear brake handle
• Main cushion
• Frame
• Rear fender
• Lower pump of the rear disc brake
• Rear brake disc
• Motor
• Rear tyre

Chapter III: Main Technical Parameters

I. Main Technical Parameters of the Complete Vehicle

• Overall dimensions: 1756×700×1200mm
• Wheel base: 1296mm
• Seat height: 700mm
• Complete vehicle weight: ≤40Kg
• Tyre specification: 18×9.5-8
• Maximum load capacity: 75Kg
• Designed maximum speed: ≤20Km/h
• Driving mileage: 40~60Km
• Maximum torque: 95n/m
• Maximum gradeability: ≤20°
• Brake performance (20KM/H speed): Dry state: ≤1m; wet state: ≤3m

II. Main Technical Parameters of the Storage Battery

• Battery type: Power lithium battery
• Capacity: 12Ah, 15Ah, 20Ah, 25Ah
• Nominal voltage: 60V, 72V

III. Main Technical Parameters of the Motor

• Motor model: Brushless DC hub motor
• Rated power: 500W, 800W, 1000W

IV. Main Technical Parameters of the Controller

• Current limiting protection value: ≤25±1A
• Undervoltage protection value: 52±0.5V

V. Main Technical Parameters of the charger

• Input voltage (AC): AC140~240V 50/60Hz
• Output voltage (DC): 71.4±0.4V
• Charging time (depending on residual electricity): 6~8h

Note: The above parameters are subject to change without further notice. For details of vehicle models, refer to the company's technical parameter database.

Chapter IV: Operation Methods and Precautions

I. Precautions for Safe Driving

1. Follow traffic rules and ensure safe driving. Recommended speed is within 20Km/h.
2. Before driving, familiarize yourself with the Specification and practice in an empty field to learn driving essentials and understand the structure and performance of the electric bike.
3. Do not lend the electric bike to unfamiliar individuals or those unable to drive. Single-hand driving, handlebar release, or drunk driving is dangerous.
4. Exercise special caution in rainy and snowy days due to damp ground. Avoid high-speed driving and be cautious during turns. Brake in advance to prevent accidents.
5. Always wear a helmet and fasten the straps securely.
6. Wear comfortable clothing that allows free movement. Ensure clothes have closed cuffs and shoes have low heels. The frame number (on the base plate) and motor number (on the motor shell cover) are important for maintenance and service.
7. The maximum carrying capacity is 100Kg. Excessive load can affect handlebar control and stability. The stable load is one person; using the front pedal for cargo or passengers is dangerous.

II. Correct Operation Method

1. Driving method

1. Drive with a natural posture for free movement.
2. When sitting, maintain a position in the middle of the seat cushion to avoid front wheel load reduction and handlebar vibration.
3. When standing, slowly turn the rolling handle during acceleration to prevent instability from sudden acceleration.
4. Drive slowly on damaged roads or roads with crushed stones.
5. On wet or slippery surfaces (rainy/snowy weather), drive slowly. Avoid riding if the battery box is submerged in water to prevent short circuits and damage to electrical components, which can reduce brake performance.

2. Parking method

1. When parking, be aware of vehicles and pedestrians. Park on the right side of a flat pavement; do not park on a ramp.
2. After stable parking, turn the power lock rightwards, remove the key, and lock the electric bike.

3. Operation method of the electric quantity indication:

Switch on the lock; the voltage indicator lamp will illuminate. Full charge shows green, blue, and yellow lamps. If the green lamp is off, capacity is at 60%; if the blue lamp is off, capacity is at 40%; if the yellow lamp is off, the battery is depleted. Charge immediately when the blue lamp is off.

4. Operation method of the power lock:

Turn the power lock key clockwise to start the motor. The key cannot be removed, and the power supply cannot be turned off while driving. After parking, turn the power lock counterclockwise to turn off the power supply and remove the key.

5. Rolling handle (speed regulation handle):

Rotate the handle towards the driver for acceleration; away from the driver for deceleration. Power to the motor stops upon reset.

6. Operation method and precautions for the disc brake

(1) Operation method of the disc brake

1. Brake clearance adjustment: Use a 2mm internal hexagonal wrench to adjust the screw between the brake handle and handlebar tube until a comfortable hand feeling is achieved.
2. Brake pad replacement: Replace brake pads when wear exceeds 1mm or the adjustment screw is at its limit. Press in one pad with a screwdriver to create space for the new one. Adjust the brake handle screw after replacement.
3. Running-in period: New brake surfaces require a running-in period for optimal brake force. Avoid sudden braking during the first week to prevent damage. Slightly engage the brake during normal driving to maintain friction.
4. Oil change: The disc brake uses mineral oil. Change oil every 2-3 years or when the brake handle feels fatigued, using an injector suction pipe.

(2) Precautions

1. Do not apply lubricating oil to the disc brake disc, pads, or caliper areas. Avoid direct contact with the disc brake disc and pad surfaces, as it reduces brake performance.
2. Avoid spraying water on new brakes to prevent contamination of brake pads by lubricating oil in the assembly gap.
3. The oil pressure disc brake has strong force; practice in a safe place to adapt. Avoid sudden braking, which can cause injury due to wheel locking.

Chapter IV: Operation Methods and Precautions (Continued)

7. Operation method and precautions for the charger

(1) Operation method:

1. During charging, insert the battery box plug first, then the AC220V plug. After charging, remove the AC220V plug first, then the battery box plug.
2. Normal charging shows a red indicator lamp; full charging shows a green indicator lamp.
3. If the charging temperature is too high, the red lamp will flash, indicating a temperature protection state. Move the charger to a cool, ventilated place. Charging resumes normally when the internal temperature drops to 60°C.
4. When no battery is connected, the charger output is a pulse voltage less than 42V. Test voltage with a 1KΩ load between output terminals.

(2) Precautions

1. The charger is for indoor use only.
2. Do not charge in sealed spaces, under direct sunlight, or in high-temperature environments. Do not place the charger in the seat cask or trunk for charging.
3. Do not connect the un-loaded charger to AC power for extended periods while not charging.
4. If the indicator lamp is abnormal, the charger emits a smell, or the charger shell overheats, stop charging immediately and have the charger repaired or replaced.
5. Do not remove or replace devices in the charger without permission.
6. Do not charge non-rechargeable batteries.
7. Do not use in combustible gas environments, which may cause explosion or fire.
8. Keep the charger away from water or moisture to prevent fire or electric shock.
9. If the charger is damaged and internal parts are exposed, do not touch it to avoid electric shock.

8. Operation method and precautions for the battery

(1) Charging

1. Use the provided charger. Unqualified chargers may shorten battery life or cause failure.
2. A completely discharged battery can be charged to over 95% in 5 hours and 100% in 8 hours.
3. Do not touch positive and negative terminals with metal during charging.
4. The battery is approximately 80% charged upon delivery. Recharge for 3-10 hours before first use.
5. If the electric bike is unused for over 1 month, battery capacity may decrease by about 5%. Charge before use.
6. Charge promptly to ensure driving mileage.
7. The charger may become hot during charging, which is normal if the temperature does not exceed 60°C.
8. Charge and store the electric bike and charger in a stable, dry place, away from flammable or explosive articles, and out of reach of children.
9. Charge the battery within 24 hours after complete discharge; charging time should not be less than 3 hours. Avoid short-circuiting the charging port.

(2) Discharging (use)

1. The battery is exclusively for this electric bike; other uses are not covered by warranty.
2. In case of short circuit, the battery management system will automatically protect the battery by fusing a protective fuse. The battery will function normally after fuse replacement and a short circuit release period of approximately 2 minutes.
3. Damage or improper configuration of the controller, motor, horn, or lighting equipment can cause high current discharge. The battery will temporarily stop output but recover within 10 seconds without affecting riding.
4. The battery operates within -10℃ to 55℃. Battery energy use decreases with temperature reduction, which is normal.

(3) Storage

1. For long-term storage (over 1 month), charge the battery to 60%-80%. Recharge every three months and before use.
2. Store the battery in a cool, dry environment.
3. Do not connect the positive and negative electrodes of the conducting object directly during storage.
4. Keep the battery away from fire sources.
5. Do not disassemble or retrofit the battery.

(4) Warning

1. If the battery becomes deformed or hot, discontinue use and contact the company or maintenance department.
2. In case of fire, do not use water to extinguish battery fires. Use sand, foam fire extinguisher, or fabric saturated with water for organic solvent fires.
3. Battery faults due to delayed charging of incompletely discharged batteries are not covered by warranty.
4. Do not discard the battery randomly.

Chapter III: Checking, Cleaning and Maintenance

(I) Regular or daily checking item

1. Ensure the electric bike is in a safe position for checks.
2. Check if any previous day's abnormal conditions affect operation.
3. Brake effect: Check if the brake handle applies moderately, the gap is proper, and braking is normal.
4. Tyre check: Inspect for cracks, damage, abnormal wear, or embedded objects (metal, stone, glass). Check tyre groove depth. Replace tyres when the tread bump is worn by 2/3. Check tyre pressure based on contact with the ground; normal pressure for front and rear tyres is 1.5 kg/cm².
5. Check if the power supply voltage indicates complete charging (refer to Chapter 4, Item II, Article 3).
6. Steering system check: Inspect handlebars (upper, lower, front, rear, left, right) and front fork for moderate elasticity and flexible steering. Listen for rattling sounds and check for looseness or knocking. Contact the dealer if issues are found.
7. Check if the front and rear axles are loose.

Chapter IV: Common Fault and Troubleshooting Method

Chapter V: Electric Principles

This section contains a schematic diagram of the electric system. Key components labeled include:

• S1 electric switch
• Hall device
• Speed regulation
• Left and right brake cranks
• Various electronic components (resistors, capacitors, transistors, integrated circuits) indicated by standard symbols and values.

The diagram illustrates the electrical connections for the scooter's operation, including power supply, control circuits, and motor connections.

Electrical System Diagram

The electrical system diagram (CC2-003) from Chongqing Yingang Technology (Group) Co., Ltd. details the wiring for various components:

• Horn switch, headlight, LED lights
• Left switch, turning switch, headlight switch, flasher, left brake switch
• Horn
• Right brake switch, power lock, speed regulating handle, electric quantity display, charging socket, Hall speed regulator
• Controller, fuse (10A), fuse (30A)
• Bluetooth electric module, motor, tail light, rear right turning light
• Regulator, air switch, battery

The diagram includes revision history and component details.