Introduction
This user manual provides essential information for the safe and efficient operation, installation, and maintenance of your Yose Power 48V 17.5Ah Triangle Ebike Battery. Please read this manual thoroughly before using the battery to ensure optimal performance and longevity.
The Yose Power 48V 17.5Ah battery is designed for electric bicycles, offering reliable power and compatibility with specific Sondors e-bike models, including X, XS, MXS, Steps, and Smart Step series.
Safety Information
WARNING: Lithium-ion batteries can be hazardous if not handled properly. Failure to follow safety instructions may result in fire, electric shock, or injury.
- Always use the charger specifically designed for this battery. Using an incompatible charger can cause damage or fire.
- Do not disassemble, puncture, or modify the battery pack.
- Avoid exposing the battery to extreme temperatures, direct sunlight, or moisture.
- Keep the battery away from children and pets.
- If the battery shows signs of damage, swelling, or leakage, discontinue use immediately and contact customer support.
- Ensure proper ventilation during charging.
- Do not short-circuit the battery terminals.
Product Features and Components
The Yose Power Triangle Ebike Battery is designed with user convenience and safety in mind. Below are its key features and components:

Overall Battery View: This image displays the complete Yose Power Triangle Ebike Battery, highlighting its unique triangular shape designed for frame mounting on compatible electric bicycles.

Dimensions and Key Specifications: This graphic illustrates the battery's physical dimensions (315mm x 80mm x 220mm) and lists important technical specifications such as 48V voltage, 17.5Ah capacity, 4.3kg weight, 841Wh energy, 40-60 miles driven distance, LG MJ1 cell type, and built-in protections (shortcircuit, drop, waterproof, dustproof, 1000 cycle life).

Battery Power Light and Charge Socket: A close-up view showing the LED battery indicator lights, which display the remaining power level (100%, 75%, 50%, 25%), and the charge socket. The charge current for this socket should not exceed 5 amps.

Safe Lock: This image highlights the integrated lock mechanism, used to securely attach the battery to the e-bike frame, preventing theft and accidental detachment. Keys are provided for locking and unlocking.

Battery Handle: A detailed view of the ergonomic handle integrated into the battery design, making it easier to carry and facilitate installation and removal from the e-bike frame.

Power Switch and Charging Port: This image shows the power switch (ON/OFF) for controlling the battery's power output and the dedicated charging port where the charger connects.

Internal Battery Cell Arrangement: An X-ray like view revealing the internal structure and arrangement of the high-quality lithium cells within the battery pack, ensuring stable and efficient power delivery.
Setup and Installation
The Yose Power Triangle Ebike Battery is designed for easy installation on compatible e-bike frames. Ensure your e-bike is compatible with a triangle-shaped battery mount.
- Prepare the E-bike: Ensure your e-bike's battery mounting area is clean and free from obstructions.
- Align the Battery: Carefully align the battery with the mounting bracket on your e-bike frame. The triangular shape is designed to fit snugly within the frame's geometry.
- Slide into Place: Gently slide the battery onto the mounting bracket until it clicks into place.
- Secure with Lock: Use the provided key to lock the battery onto the frame. This prevents accidental detachment and provides security against theft. Ensure the lock is fully engaged.
- Connect Power: Connect the battery's power output cable to your e-bike's motor controller input. Ensure a secure connection.

Compatibility Guide: This diagram illustrates the battery's fit within an e-bike frame and specifies compatibility with Sondors Steps, Smart Step models from 2019-2023, and Smart Steps purchased from Costco for all years. It also indicates an estimated driven distance of 40-60 miles per charge.
Operating Instructions
- Powering On: Locate the power switch on the battery (refer to "Power Switch and Charging Port" image in Features section). Flip the switch to the "ON" position to activate the battery.
- Checking Battery Level: Press the small button next to the LED indicator lights (refer to "Battery Power Light and Charge Socket" image). The lights will illuminate to show the current charge level:
- Four lights: 100% Power
- Three lights: 75% Power
- Two lights: 50% Power
- One light: 25% Power (Recharge soon)
- Powering Off: When not in use, or before removing the battery, flip the power switch to the "OFF" position to conserve battery life.
Maintenance and Charging
Proper maintenance and charging practices will extend the life of your Yose Power battery.
Charging the Battery
- Ensure the battery is turned OFF before charging.
- Connect the charger (not included) to the battery's charge socket.
- Plug the charger into a standard wall outlet.
- A full charge typically takes approximately 7 hours. Refer to your charger's indicator lights for charging status.
- Do not overcharge the battery. Disconnect the charger once charging is complete.
General Maintenance
- Cleaning: Wipe the battery exterior with a dry, soft cloth. Do not use water or cleaning agents directly on the battery.
- Storage: If storing the battery for an extended period, charge it to approximately 50-70% capacity. Store in a cool, dry place, away from direct sunlight and extreme temperatures. Recharge every 2-3 months to prevent deep discharge.
- Cycle Life: The battery is designed to retain 70% capacity after 700 charge cycles, indicating robust long-term performance with proper care.
Troubleshooting
If you encounter issues with your Yose Power battery, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not turning on. | Battery switch is OFF; Battery is fully discharged; Loose connection. | Ensure power switch is ON; Charge the battery; Check all cable connections. |
| Battery not charging. | Charger not connected properly; Faulty charger; Battery too hot/cold. | Verify charger connection; Test charger with another device if possible; Allow battery to reach room temperature. |
| Reduced range/capacity. | Battery aging; Improper charging/storage; Extreme riding conditions. | This is normal over time (70% after 700 cycles); Follow maintenance guidelines; Adjust riding style for efficiency. |
| Battery indicator lights not working. | Button not pressed; Internal fault. | Ensure button is pressed firmly; If issue persists, contact support. |
If the problem persists after attempting these solutions, please contact Yose Power customer support for further assistance.
Specifications
| Attribute | Detail |
|---|---|
| Model Number | Triangl Ebike Battery 48V 17.5Ah |
| Product Dimensions | 12.4 x 3.15 x 8.66 inches (315 x 80 x 220 mm) |
| Item Weight | 9.46 pounds (4.3 kg) |
| Battery Voltage | 48V |
| Battery Capacity | 17.5 Amp Hours (841 Wh) |
| Battery Cell Composition | Lithium Metal (LG MJ1 Cells) |
| Standard Discharge Current | 10A |
| Recommended Uses | Electric Bicycles (Compatible with Sondors X/XS/MXS/Steps/Smart Step) |
| Manufacturer | Yose Power |
What's in the Box
Upon opening your Yose Power Triangle Ebike Battery package, you should find the following items:
- Battery Pack (Yose Power 48V 17.5Ah Triangle Ebike Battery)
- Keys (for the battery lock mechanism)
- User Manual (this document)

Packing List Overview: This image visually confirms the contents of the package, including the main battery unit, the set of keys for the integrated lock, and the user manual.
Warranty and Support
Yose Power is committed to providing high-quality products. Your battery is covered by a return policy for quality issues.
- Return Policy: If the battery encounters quality issues within 1 month of purchase, please contact Yose Power customer support. A prepaid return label will be provided for eligible returns.
- Customer Support: For any questions, technical assistance, or warranty claims, please contact Yose Power customer service. Refer to the contact information provided on the product packaging or the official Yose Power website.
For the most up-to-date support information, please visit the official Yose Power store on Amazon: YS YOSE POWER Store