1. Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your SAMEBIKE JG20 Electric Folding Bike. Please read this manual thoroughly before using the bicycle to ensure proper handling and to prevent damage or injury.
1.1 Safety Precautions
- Always wear a helmet and appropriate safety gear when riding.
- Familiarize yourself with local traffic laws and regulations regarding electric bicycles.
- Perform a pre-ride inspection before each use, checking brakes, tires, and battery level.
- Do not ride under the influence of alcohol or drugs.
- Avoid riding in adverse weather conditions or on slippery surfaces.
- Ensure the folding mechanism is securely locked before riding.
2. Product Overview
The SAMEBIKE JG20 is a 26-inch electric mountain bike designed for versatile use. It features a powerful motor, a removable battery, and a dual suspension system for a comfortable ride.

Figure 2.1: Overview of the SAMEBIKE JG20 Electric Folding Bike. This image displays the full bicycle from a side angle, highlighting its robust frame, wheels, and suspension system.
2.1 Key Features
- Motor: High-speed brushless DC motor for efficient power delivery.
- Battery: 48V 14Ah removable battery, offering a range of 60-100 km (37-62 miles) and approximately 4 hours fast charge.
- Display: Multifunctional Intelligent TFT Colorful LCD Display (81F) showing speed, mode, range, and battery indicator.
- Suspension: Dual suspension system with a lockable front fork and a rear four-link absorber for enhanced comfort on varied terrains.
- Brakes: Dual hydraulic disc brakes for sensitive and reliable stopping power.
- Gears: Shimano 7-speed gear system for versatile riding.
- Riding Modes: Three modes: Electric Assist Mode, Electric Mode, and Body (Pedal) Mode.
- Additional Features: Soft seat, bright LED headlight, well-built crankset, USB charging port on display.

Figure 2.2: Battery and Range Information. This image illustrates the 48V 14Ah battery integrated into the frame, highlighting its capacity and estimated range for electric and pedal-assist modes, along with a 4-hour fast charge capability.

Figure 2.3: Multifunctional Intelligent LCD Display. This image provides a detailed view of the handlebar, showcasing the 81F TFT colorful LCD display, non-slip grips, button pad, power switch, USB charging port, thumb throttle, and Shimano 7-speed shifter.

Figure 2.4: Dual Suspension System. This image highlights the front lockable suspension fork and the rear four-link absorber, demonstrating the bike's capability to absorb road bumps effectively.

Figure 2.5: Dual Hydraulic Brakes. This image focuses on the hydraulic disc brake system, emphasizing its sensitive and safe stopping performance.

Figure 2.6: Key Components. This image displays close-ups of the soft seat, bright headlight, Shimano 7-speed gear system, and the well-built crankset, detailing important parts of the bicycle.
3. Setup
3.1 Unboxing and Initial Inspection
Carefully remove the bicycle and all components from the packaging. Inspect for any signs of damage during transit. Report any damage to your retailer immediately.
3.2 Assembly
Your SAMEBIKE JG20 is approximately 90% pre-assembled. You will typically need to install the front wheel, handlebars, pedals, and adjust the seat. Refer to the included assembly guide for detailed, step-by-step instructions specific to your model.
3.3 Battery Installation and Charging
- Installation: Insert the 48V 14Ah battery into its designated compartment in the frame. Ensure it clicks securely into place. Use the provided key to lock the battery, which also acts as an anti-theft measure.
- Charging: Connect the charger to a standard power outlet and then to the bicycle's charging port. The battery can be charged while installed on the bike or removed. A full charge typically takes about 4 hours. The display or charger indicator will show charging status.
- First Charge: Fully charge the battery before its first use to optimize battery life.
4. Operating Instructions
4.1 Powering On/Off
To power on the bicycle, press and hold the power button on the handlebar control panel (refer to Figure 2.3). The LCD display will illuminate. To power off, press and hold the power button again until the display turns off.
4.2 LCD Display Functions
The 81F TFT Colorful LCD Display provides real-time information about your ride:
- Speed: Current riding speed.
- Mode: Indicates the current riding mode (Electric Assist, Electric, or Body).
- Battery Indicator: Shows remaining battery charge.
- Range: Estimated remaining distance based on current battery level and mode.
- Trip/ODO: Displays current trip distance or total odometer reading.
- Error Codes: Automatic computer recognition for system errors.
4.3 Riding Modes
Your SAMEBIKE JG20 offers three distinct riding modes:
- Electric Assist Mode (PAS Mode): The motor provides assistance as you pedal. You can adjust the level of assistance using the button pad on the handlebar. This mode extends your range and makes pedaling easier.
- Electric Mode: Use the thumb throttle to engage the motor without pedaling. This mode provides full electric power.
- Body Mode (Pedal Mode): Ride the bicycle like a traditional bike, using only pedal power. The electric system is off or provides no assistance.
4.4 Gear Shifting
The Shimano 7-speed shifter allows you to change gears to match terrain and riding conditions. Shift gears smoothly by pedaling lightly while operating the shifter. Avoid shifting gears while stationary or under heavy load.
4.5 Braking
The bicycle is equipped with dual hydraulic disc brakes. Apply both brake levers simultaneously for effective and balanced stopping. Practice braking in a safe area to become familiar with their responsiveness.
4.6 Folding and Unfolding
(Note: Specific folding instructions are not available in the provided data. Please refer to the separate folding guide or manufacturer's video for detailed steps.) Ensure all folding mechanisms are securely latched before riding. When folding, ensure the battery is off and remove any loose items.
5. Maintenance
Regular maintenance is crucial for the longevity and safe operation of your electric bicycle.
5.1 Battery Care
- Charge the battery regularly, even if not in use, to maintain its health.
- Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures.
- Do not fully discharge the battery frequently.
- Use only the original charger provided by SAMEBIKE.
5.2 Tires
- Check tire pressure before each ride. Maintain pressure within the recommended range printed on the tire sidewall.
- Inspect tires for wear, cuts, or embedded objects.
5.3 Brakes
- Regularly check brake pads for wear and replace them when necessary.
- Ensure brake levers have proper tension and responsiveness. Adjust if they feel too loose or too tight.
5.4 Cleaning
Clean the bicycle regularly with a damp cloth and mild soap. Avoid using high-pressure washers directly on electrical components. Dry thoroughly after cleaning.
5.5 General Inspection
- Check all bolts and fasteners for tightness.
- Lubricate the chain regularly.
- Inspect cables for fraying or damage.
6. Troubleshooting
This section addresses common issues you might encounter with your SAMEBIKE JG20. For problems not listed here, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on. | Battery is not charged or not properly installed. | Ensure battery is fully charged and securely locked in place. Check power button connection. |
| Motor not assisting. | Battery low, wrong riding mode, or sensor issue. | Charge battery. Switch to Electric Assist or Electric Mode. Check for error codes on display. |
| Brakes feel weak. | Worn brake pads or hydraulic fluid issue. | Inspect brake pads and replace if worn. Consult a professional for hydraulic system issues. |
| Unusual noises during ride. | Loose components, chain issues, or suspension noise. | Check all bolts and fasteners. Lubricate chain. Inspect suspension components. |
7. Specifications
Technical specifications for the SAMEBIKE JG20 Electric Folding Bike.
| Model | JG20 |
| Bike Type | Electric Mountain Bike, Folding |
| Wheel Size | 26 inches (66 cm) |
| Frame Material | Aluminum |
| Motor | Brushless High-Speed DC Motor |
| Battery | 48V 14Ah Removable Lithium Battery |
| Charging Time | Approx. 4 hours |
| Max Range | 60-100 km (37-62 miles) |
| Brakes | Dual Hydraulic Disc Brakes |
| Gears | Shimano 7-Speed |
| Suspension | Front Fork Suspension, Rear Four-link Absorber |
| Recommended Height | 5'2" - 6'8" (157 cm - 203 cm) |
| E-bike Weight | 56.2 lbs (25.5 kg) |
| Load Capacity | 220 lbs (100 kg) |
| Color | Black |
| Included Components | Anti-theft device |

Figure 7.1: Bicycle Dimensions and User Specifications. This image provides a visual representation of the bike's key dimensions, including handlebar length, bike height, seat height (min/max), wheel diameter, wheelbase, and total length, along with recommended user height and weight capacity.
8. Warranty and Support
8.1 Warranty Information
The SAMEBIKE JG20 Electric Folding Bike comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects in materials and workmanship. Wear parts are generally excluded from warranty but may be available for purchase at cost price.
Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by misuse, neglect, accidents, unauthorized modifications, or normal wear and tear.
8.2 Customer Support
For technical assistance, warranty claims, or inquiries about replacement parts, please contact SAMEBIKE customer support through the retailer where you purchased the product or visit the official SAMEBIKE website for contact information.
When contacting support, please have your model number (JG20) and purchase date ready.





