1. Safety Information
Your safety is paramount. Please read and understand all safety instructions before operating the DEEPOWER S26 Electric Bike. Failure to follow these instructions may result in serious injury or property damage.
1.1 General Safety Guidelines
- Always wear a helmet that meets local safety standards.
- Obey all local traffic laws and regulations.
- Perform a pre-ride inspection before each use (brakes, tires, battery, bolts).
- Do not ride under the influence of alcohol or drugs.
- Be aware of your surroundings and potential hazards.
1.2 Battery Safety
- Use only the charger provided by DEEPOWER.
- Do not expose the battery to extreme temperatures or direct sunlight.
- Do not puncture, drop, or disassemble the battery.
- Charge the battery in a well-ventilated area, away from flammable materials.
1.3 Riding Safety
- Adjust your speed to suit road conditions and your riding ability.
- Use hand signals to indicate turns and stops.
- Be visible, especially at night. Use the integrated LED headlight and brake light.
- Avoid riding in heavy rain or on slippery surfaces.
2. Product Overview
The DEEPOWER S26 is a versatile electric mountain bike designed for adults, featuring a powerful motor, long-range battery, and robust construction suitable for various terrains.

Figure 2.1: The DEEPOWER S26 Electric Bike, showcasing its robust frame and fat tires.
2.1 Key Features
- 500W Brushless Motor: Provides strong power output for various terrains.
- 48V 12.8Ah Removable Battery: Offers extended range and convenient charging.
- 20"x4" Fat Tires: Designed for excellent traction and stability on snow, sand, mountain, and city roads.
- Lockable Suspension Fork: Enhances comfort and control over rough surfaces.
- Shimano 7-Speed Gear System: Allows for versatile riding in different conditions.
- Front and Rear Mechanical Disc Brakes: Ensures reliable stopping power.
- EN06 Digital Display: Provides essential riding information at a glance.
- Foldable Design: For easier transport and storage.
2.2 Components
Familiarize yourself with the main components of your DEEPOWER S26 Electric Bike:

High Speed Gear Motor (48V 500W): Located in the rear wheel hub, providing powerful assistance. Capable of 30 mph top speed and 60 Nm torque.

Removable Large Capacity Battery (48V 12.8Ah): Mounted on the frame, providing power for the motor and electronics. Offers 20-37 miles range per charge.

Shock Absorbing Front Fork: Provides suspension for a smoother ride, with a lockable feature for different terrains.

EN06 Digital Display: Mounted on the handlebars, showing speed, battery level, distance, and error codes.

LED Headlight and Disc Brakes: Front-mounted LED headlight for visibility, and mechanical disc brakes on both front and rear wheels for effective stopping.
3. Setup
3.1 Unpacking and Initial Inspection
Carefully remove the bike from its packaging. Inspect for any visible damage that may have occurred during shipping. Report any damage to your retailer immediately.
3.2 Assembly
The DEEPOWER S26 Electric Bike comes mostly pre-assembled to minimize setup time. You will primarily need to:
- Unfold the frame and secure the locking mechanism.
- Install the front wheel (if not already attached).
- Attach the handlebars and adjust their position.
- Install the pedals (note left and right pedal threading).
- Adjust the seat post height for comfortable riding.
- Ensure all bolts and quick releases are securely tightened. It is crucial to double-check all bolts on rims and crank arm shafts as they may not be perfectly tightened from the factory.
3.3 Battery Charging
Before your first ride, fully charge the battery. Connect the charger to the battery charging port and then to a power outlet. The charging indicator on the charger will change when fully charged (typically 4-6 hours).
4. Operating Instructions
4.1 Powering On/Off
To power on the bike, press and hold the power button on the EN06 digital display. To power off, press and hold the power button again.
4.2 Riding Modes
The DEEPOWER S26 offers three riding modes:
- Pure Electric Mode: Engage the throttle for motor-only propulsion.
- Pedal Assist System (PAS) Mode: The motor provides assistance as you pedal. Adjust the assist level using the display controls.
- Pedal Only Mode: Ride the bike like a traditional bicycle with no motor assistance.
4.3 Gear Shifting
The bike is equipped with a Shimano 7-speed gear system. Use the shifter on the handlebars to change gears according to terrain and desired speed. Shift smoothly to avoid strain on the drivetrain.
4.4 Display Usage (EN06)
The EN06 digital display provides real-time information:
- Speed Value: Current riding speed.
- Battery Indicator: Shows remaining battery charge.
- ODO Mileage: Total distance traveled.
- PAS Level: Current pedal assist level.
Use the buttons on the display to cycle through information and adjust PAS levels.
4.5 Braking
The bike features front and rear mechanical disc brakes. Squeeze the brake levers on the handlebars to slow down or stop. Apply both brakes simultaneously for optimal stopping power and control.
5. Maintenance
Regular maintenance ensures the longevity and safe operation of your electric bike.
5.1 General Cleaning
Clean your bike regularly with a damp cloth and mild soap. Avoid using high-pressure washers directly on electrical components.
5.2 Tire Pressure
Maintain proper tire pressure as indicated on the tire sidewall. Check pressure before each ride. Ensure tires are fully aired up, especially when going over bumps.

Figure 5.1: The 20"x4" fat tires are designed for various terrains, requiring proper inflation for optimal performance.
5.3 Brake Inspection
Regularly check brake pads for wear and brake cables for proper tension. Ensure the brake rotors are clean and free from obstructions. If the front brake rubs on the rotor, an adjustment may be needed.
5.4 Chain Lubrication
Keep the chain clean and lubricated to ensure smooth gear changes and prevent rust.
5.5 Battery Care
- Store the battery in a cool, dry place when not in use.
- If storing for extended periods, charge the battery to 50-70% every 2-3 months.
- Do not fully discharge the battery regularly.
5.6 Bolt Tightening
Periodically check and tighten all bolts, especially those on the wheels, handlebars, seat post, and crank arms, to ensure all components are secure.
6. Troubleshooting
This section addresses common issues you might encounter with your DEEPOWER S26 Electric Bike.
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on | Battery not charged; Battery not properly seated; Loose electrical connection | Charge battery; Ensure battery is fully inserted; Check all visible connections. |
| Motor not assisting | PAS level too low; Brake levers engaged; Motor cable disconnected | Increase PAS level; Release brake levers; Check motor cable connection. |
| Brakes squeak or rub | Dirty rotors; Misaligned calipers; Worn brake pads | Clean rotors; Adjust brake calipers; Replace brake pads if worn. |
| Gears not shifting smoothly | Derailleur out of adjustment; Dirty or dry chain; Bent hanger | Adjust derailleur; Clean and lubricate chain; Inspect and straighten hanger. |
| Reduced range | Under-inflated tires; Battery degradation; Riding in high assist mode constantly | Inflate tires to recommended pressure; Consider battery replacement if old; Use lower assist modes when possible. |
If you encounter an issue not listed here, or if the suggested solutions do not resolve the problem, please contact DEEPOWER customer support.
7. Specifications
Detailed technical specifications for the DEEPOWER S26 Electric Bike (Model G20L).

Figure 7.1: Dimensions and key specifications of the DEEPOWER S26 Electric Bike.
| Feature | Specification |
|---|---|
| Model Number | G20L |
| Motor | 500W Brushless Motor |
| Battery | 48V 12.8Ah Lithium Battery (Removable) |
| Max Speed | 25 MPH (40 KM/H) - Note: Product description states 30mph, but 25mph is common for regulations. |
| PAS Range | Up to 90 KM (55 Miles) - Note: Product description states 25-40 miles. Using the higher value from title. |
| Charging Time | 4-6 Hours |
| Tires | 20" x 4" Fat Tires |
| Gears | Shimano 7-Speed |
| Brakes | Mechanical Disc Brakes (Front & Rear) |
| Suspension | Lockable Front Fork Suspension |
| Frame Material | Aluminum |
| Recommended Rider Height | 5.2 - 6.2 FT |
| Max Load Capacity | 330 LBS |
| Bicycle Weight | 64 LBS |
| Foldable | Yes |
8. Warranty and Support
DEEPOWER stands behind the quality of its products. For warranty information, please refer to the warranty card included with your purchase or visit the official DEEPOWER website.
For technical support, parts, or any questions regarding your DEEPOWER S26 Electric Bike, please contact DEEPOWER customer service:
- Email: Deepowery@outlook.com
- Online Support: Visit the DEEPOWER store on Amazon or the official brand website for FAQs and support resources.
Please have your model number (G20L) and purchase date ready when contacting support.





