Introduction
Welcome to the VAKOLE CO20 MAX Electric Bicycle user manual. This guide provides essential information for the safe assembly, operation, maintenance, and troubleshooting of your new electric bicycle. Please read this manual thoroughly before your first ride to ensure optimal performance and safety.

Figure 1: VAKOLE CO20 MAX Foldable Electric Bicycle
Safety Guidelines
Your safety is paramount. Always adhere to the following guidelines:
- Always wear a helmet that meets safety standards.
- Familiarize yourself with local traffic laws and regulations regarding electric bicycles.
- Perform a pre-ride inspection before each use, checking brakes, tires, battery, and all connections.
- Do not ride under the influence of alcohol or drugs.
- Be aware of your surroundings and ride defensively.
- Avoid riding in adverse weather conditions, such as heavy rain or snow, if possible.
Components Overview
Understand the key components of your VAKOLE CO20 MAX electric bicycle:
Dual Brushless Motor
Equipped with dual brushless motors, providing efficient and powerful assistance for various terrains. The motor delivers 250W power and a maximum speed of 25 km/h.

Figure 2: Dual Brushless Motor System

Figure 3: Full Suspension System
Full Suspension
The bike features a full suspension system, including a lockable front fork mechanical suspension, designed to absorb shocks and provide a smoother ride on uneven surfaces.
Dual Disc Brakes
Equipped with sensitive front and rear 160mm disc rotors, providing reliable and strong braking force in various conditions for enhanced safety.

Figure 4: Front Disc Brake Detail

Figure 5: Shimano 7-Speed Shifter and Throttle
7-Speed Mechanical Shift & Throttle
The Shimano 7-speed gear shifter allows for adapting to different terrains. A twist throttle provides an alternative riding mode.
Upgraded LCD Display
The LCD meter provides real-time information on speed, battery level, and distance traveled, enhancing the overall riding experience. It supports 3 riding modes and features a full-color display.

Figure 6: Upgraded LCD Display

Figure 7: LED Headlight and Taillight
LED Headlight & Taillight
A brighter LED headlight improves visibility for safer night riding. The 48V taillight ensures maximum visibility from the rear.
Large Capacity Battery
Integrated 48V 20Ah Samsung battery with a locking key, simple to remove for charging. Provides a range of up to 110 km on a single charge in assisted mode.

Figure 8: Removable Battery Pack

Figure 9: Ergonomic Saddle
Soft-Comfortable Saddle
The saddle is designed for comfort and can be adjusted vertically and horizontally to fit your riding posture.
Setup and First Use
- Unfolding the Bicycle: Carefully unfold the frame, stem, and pedals. Ensure all quick-release levers are securely fastened.
- Handlebar Adjustment: Adjust the handlebar height and angle for a comfortable riding position. Tighten all clamps securely.
- Seat Adjustment: Adjust the seat post height so your feet can comfortably touch the ground when stopped. Ensure the quick-release lever is tightened.
- Initial Battery Charge: Before your first ride, fully charge the battery using the provided 4A fast charger. Connect the charger to the battery port and then to a power outlet. The indicator light on the charger will change when fully charged.
- Tire Pressure: Check and inflate tires to the recommended pressure (typically found on the tire sidewall). The CO20 MAX uses 20 x 4.0 inch fat tires.
- Brake Check: Test both front and rear brakes to ensure they engage properly and stop the bike effectively.
Operating Your E-Bike
Turning On/Off
Press and hold the power button on the LCD display to turn the bike on or off. The display will illuminate, showing battery level, speed, and other information.
Riding Modes
Your VAKOLE CO20 MAX offers multiple riding modes:
- Pedal Assist Mode (PAS): Use the '+' and '-' buttons on the display to select different levels of pedal assistance. Higher levels provide more motor power as you pedal.
- Throttle Mode: Twist the throttle on the handlebar to engage motor power without pedaling. This mode is for quick acceleration or cruising.
- Manual Mode: Ride the bike like a traditional bicycle without any motor assistance.
Gear Shifting
Use the Shimano 7-speed shifter on the right handlebar to change gears. Shift to lower gears for climbing hills and higher gears for flat terrain or downhill riding.
Braking
Apply both front and rear brakes simultaneously for effective stopping. The hydraulic disc brakes provide strong stopping power. Avoid sudden, hard braking, especially at high speeds.
Folding/Unfolding
To fold the bike, follow the reverse steps of unfolding, ensuring all locking mechanisms are disengaged before folding. Always secure the folded bike to prevent accidental unfolding.
Maintenance
Regular maintenance ensures the longevity and safe operation of your e-bike:
- Battery Care: Charge the battery regularly, even if not in use, to maintain its health. Store the battery in a cool, dry place. Avoid fully discharging the battery.
- Tire Pressure: Check tire pressure weekly. Proper inflation improves efficiency and prevents punctures.
- Brake Inspection: Regularly check brake pads for wear and brake levers for proper tension. Replace worn pads promptly.
- Chain Lubrication: Keep the chain clean and lubricated to ensure smooth gear changes and prevent rust.
- Cleaning: Clean your e-bike with a damp cloth. Avoid using high-pressure water jets directly on electrical components.
- General Inspection: Periodically check all bolts, nuts, and quick-release levers for tightness. Ensure all cables are securely routed and free from damage.
Troubleshooting
Here are some common issues and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on | Battery not charged, battery not properly seated, loose connections, power button issue. | Charge battery, ensure battery is fully inserted and locked, check all cable connections, try pressing power button firmly. |
| Motor not assisting | Low battery, pedal assist level too low, brake levers engaged, motor connection issue. | Check battery level, increase PAS level, ensure brake levers are fully released, check motor cable connection. |
| Brakes feel weak | Worn brake pads, air in hydraulic system, misaligned calipers. | Inspect and replace brake pads, bleed hydraulic system (professional service recommended), adjust caliper alignment. |
| Gears not shifting smoothly | Dirty chain, misaligned derailleur, stretched cable. | Clean and lubricate chain, adjust derailleur (refer to a bike repair guide or professional), replace shifter cable. |
If you encounter issues not listed here or cannot resolve a problem, please contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Model | CO20MAX |
| Brand | VAKOLE |
| Motor Type | Dual Brushless Motor |
| Power | 9.6E+2 (likely 960W peak, 250W continuous per motor) |
| Max Speed | 25 km/h |
| Battery | Samsung 48V 20Ah |
| Charger | 4A Fast Charger |
| Wheel Size | 20 Inches (20 x 4.0 Fat Tires) |
| Frame Material | Chromoly Steel |
| Number of Speeds | 7 (Shimano) |
| Brakes | Hydraulic Disc Brakes (160mm rotors) |
| Suspension | Full Suspension (Lockable Front Fork) |
| Display | Upgraded LCD Display |
| Lights | LED Headlight & 48V Taillight |
| Saddle Material | Simili leather |
| Item Weight | 36.7 Kilograms |
| Age Range (Description) | Adult |
Warranty and Support
Your VAKOLE CO20 MAX Electric Bicycle comes with a manufacturer's warranty covering defects in materials and workmanship. Please refer to your purchase documentation for specific warranty terms and conditions.
For technical support, warranty claims, or any questions regarding your e-bike, please contact VAKOLE customer service through the retailer where you purchased the product or visit the official VAKOLE website for contact information.
When contacting support, please have your model number (CO20MAX) and purchase date readily available.





