1. Introduction
This manual provides essential information for the safe and efficient use of your Varstrom 48V13Ah Ebike Battery. This lithium battery is designed for 0-1500W ebike conversion kits and is compatible with Bafang Mid Drive Kits and other hub motors. Please read these instructions thoroughly before installation and operation.
The battery features an advanced Battery Management System (BMS) for protection, a secure locking mechanism, and an integrated LED power indicator. It also includes a USB port for charging external devices.

Image: The Varstrom 48V13Ah Ebike Battery, showcasing its design and the integrated USB charging port in use with a smartphone. An ebike is visible in the background.
2. Important Safety Instructions
To ensure safe operation and prolong the life of your battery, observe the following precautions:
- The battery must be charged before initial use.
- Store the battery in a cool, dry place, away from water and fire.
- Follow the charging method specified in the technical specifications.
- Do not separate, extrude, or collide with the battery.
- Charge and discharge the battery monthly, even during periods of non-use, to maintain its health.
- Do not cut the outer shell or remove the battery's jacket tube.
- Do not attempt reverse charging. Ensure correct polarity when connecting the battery.
- Do not disassemble or modify the battery without authorization.

Image: An exploded view of the 48V 13Ah battery, highlighting its internal structure including the BMS, cell holder, and shell. Icons around it indicate multiple protection features such as waterproof, dustproof, vibration protection, 1000 times cycle life, and 30A BMS. Below, icons represent overcharge, over discharge, short circuit, overcurrent, overvoltage, and temperature protection.
3. Package Contents
Verify that all items are present in your package:
- 1 x Varstrom 48V13Ah Ebike Battery
- 1 x Battery Fix Plate (6 PIN battery plate)
- 1 x XT60 Extension Cable
- 2 x Rubber Spacers
- 4 x Screws
- 2 x Keys
- 1 x Charger
- 1 x User Manual (this document)

Image: A visual representation of the package contents. The main battery unit, a separate battery fix plate, an XT60 cable, two rubber spacers, four screws, two keys, and a user manual are clearly labeled and displayed.
4. Specifications
| Feature | Detail |
|---|---|
| Brand | Varstrom |
| Model | 48V13Ah |
| Battery Material | Lithium-ion |
| Nominal Voltage | 48V |
| Rated Capacity | 13Ah |
| Energy | 624WH |
| Charger Current | 2A/3A |
| AC Input | 110-240V, 50/60Hz |
| Max Charging Voltage | 54.6V |
| Charging Time | 6-7 hours |
| BMS | 30A |
| Cycle Life | Over 1000 cycles |
| Battery Cell Type | 18650 2600MAH |
| Weight | 4.25KG |
| Dimensions (L x W x H) | 368mm x 90mm x 111mm (14.4" x 3.54" x 4.37") |
| Material | Aluminum |
| Special Feature | Waterproof, USB Port (5V 1.5-2A output) |

Image: A graphic detailing the battery parameters, including Voltage/Current (48V 13Ah), Energy (624WH), BMS (30A), Weight (4.25KG), Cycle Life (1000 times), Install Position (Downtube), and Battery Cell type (18650 2600MAH). Dimensions are also shown as 368x90x111mm.
5. Setup and Installation
5.1 Battery Installation
The Varstrom 48V13Ah Ebike Battery is designed for easy installation and removal, typically on the downtube of your ebike frame.
- Unlock and Remove Base: Use the provided key to unlock the battery from its base. Slide the battery off the mounting plate.
- Prepare Mounting Plate: The battery fix plate (6 PIN base) needs to be secured to your bike frame.
- Attach Plate to Frame: Align the battery fix plate with the mounting holes on your ebike frame's downtube. Use the provided screws and rubber spacers to securely fasten the plate.
- Slide Battery On: Once the plate is secure, slide the battery onto the fixed plate until it clicks into place.
- Lock Battery: Use the key to lock the battery onto the plate, preventing theft and ensuring it stays in place during rides.

Image: A five-step visual guide demonstrating the installation process. Step 1 shows unlocking the battery, Step 2 shows the battery base, Step 3 shows attaching the base to the frame with screws, Step 4 shows sliding the battery onto the base, and Step 5 shows the battery securely mounted on the ebike frame.
5.2 Electrical Connection
The battery's discharge wire connects to your ebike's motor or controller. The package includes an XT60 extension cable. If your motor connector is not XT60, you may need to adapt your existing cable or use the provided conversion cable.
Easy Connection (Without Tools for XT60)
If your motor/controller has an XT60 connector, simply connect the battery's XT60 output to it.
Connecting to Different Connectors
If your motor/controller uses a different connector type, you will need to adapt the XT60 extension cable:
- Carefully cut a small section of the rubber insulation from the battery's discharge wire and the corresponding connector wire from your motor/controller.
- Connect the red wire from the battery to the red wire of your motor/controller, and the black wire from the battery to the black wire of your motor/controller. Twist them together securely.
- Wrap the connection with electrical tape to insulate and secure it.
After connecting the extension cable to the battery, the other end of the connector can be directly connected to the controller or the motor.

Image: A diagram showing the Varstrom battery connected to a Bafang motor. It illustrates the XT60 connector and provides a three-step guide on how to connect wires by cutting insulation, twisting corresponding colored wires (red to red, black to black), and securing with electrical tape.
Compatibility Note: This battery is universally compatible with various ebike conversion kits. Ensure your motor's connector type is compatible or adapted correctly. The battery is suitable for hub motor kits (confirm XT60 male connector), Bafang mid-drive kits, and other ebikes (confirm XT60 male connector).

Image: Three examples of ebike setups demonstrating universal compatibility. The first shows a battery suitable for a hub motor kit, the second for a Bafang mid-drive kit, and the third for a general ebike, all emphasizing the need to confirm XT60 male connectors.
6. Operating Instructions
6.1 Powering On/Off
Locate the power switch on the battery. Press it to turn the battery on or off. Ensure the battery is securely locked to the bike frame before riding.
6.2 Checking Battery Level
The battery features an integrated LED power indicator. Press the button next to the LEDs to view the current charge level. This helps you monitor the battery status and recharge promptly.
6.3 USB Charging Port
The battery includes a USB port (5V 1.5-2A output) that can be used to charge your phone, Bluetooth speaker, or other compatible electronic devices while on the go.

Image: A collage of four detailed images. Top-left shows the USB charge socket. Top-right displays the power switch and anti-theft lock with a key inserted. Bottom-left shows the internal craftsmanship of the battery cells. Bottom-right highlights the LED battery power indicator.
6.4 Charging the Battery
Connect the provided charger to the battery's charging port and then to a standard AC power outlet (110-240V, 50/60Hz). The charging time is approximately 6-7 hours. Always use the charger supplied with the battery.
7. Maintenance
Proper maintenance ensures the longevity and performance of your Varstrom Ebike Battery:
- Regular Charging: Even if not in use, charge and discharge the battery at least once a month to prevent deep discharge and maintain cell health.
- Storage: Store the battery in a cool, dry environment. Avoid extreme temperatures, direct sunlight, and high humidity.
- Cleaning: Keep the battery and its connectors clean and dry. Use a soft, dry cloth to wipe away dust or dirt. Do not use water or harsh chemicals.
- Inspection: Periodically inspect the battery for any signs of damage, such as cracks, swelling, or corrosion. If any damage is observed, discontinue use and contact support.
8. Troubleshooting
If you encounter issues with your Varstrom Ebike Battery, consider the following common solutions:
- Battery Not Powering On:
- Ensure the battery is fully charged.
- Check that the power switch is in the 'ON' position.
- Verify that the battery is securely connected to the mounting plate and locked.
- Battery Not Charging:
- Confirm the charger is properly plugged into both the battery and the wall outlet.
- Check the wall outlet for power.
- Ensure the charger's indicator light (if present) shows it is functioning.
- Inspect the charging port and charger cable for any damage.
- Reduced Range/Performance:
- Ensure the battery is fully charged before each ride.
- Check tire pressure and riding conditions (e.g., hills, headwind) which can affect range.
- Verify that the motor and controller are functioning correctly and not drawing excessive power.
- Consider the age of the battery; battery capacity naturally degrades over time and cycles.
- USB Port Not Charging Devices:
- Ensure the battery is powered on.
- Check the USB cable for damage and ensure it's properly connected to both the battery and the device.
- Verify the device requires 5V input and is not drawing more than 2A.
If these steps do not resolve the issue, please contact customer support for further assistance.
9. Warranty Information
The Varstrom 48V13Ah Ebike Battery comes with a warranty that includes:
- 30-day return policy: For any issues within 30 days of purchase.
- 365-day repair or replacement: For manufacturing defects or malfunctions within one year from the date of purchase.
Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by misuse, unauthorized modification, accident, or failure to follow the instructions in this manual.
10. Customer Support
For any questions, technical assistance, or warranty claims, please contact our customer support team. You can typically reach the seller, Lascycle, through the Amazon platform where you purchased the product.
When contacting support, please provide your product model (48V13Ah) and ASIN (B0F5WPP8X5) to help us assist you more efficiently.
Video: An overview of the Varstrom E-bike Battery, demonstrating its easy installation and removal, the high-quality BMS for safety, and the use of quality cells. It highlights how the battery integrates with BAFANG motor kits for an enhanced cycling experience.




