Varstrom 48V20Ah Ebike Lithium Battery User Manual

1. Introduction

This manual provides essential information for the safe and efficient use of your Varstrom 48V20Ah Ebike Lithium Battery. This battery is designed for universal compatibility with various electric bikes, scooters, tricycles, folding bikes, city bikes, and balance bikes, and is an ideal solution for e-bike conversion kits or as a replacement battery. Please read these instructions carefully before installation and operation.

Important: Always verify your vehicle's voltage requirements to ensure compatibility before installing the battery.

2. Product Features

• Intelligent 30A BMS Protection: Equipped with an advanced Battery Management System (BMS) offering multiple protections against overcharge, overdischarge, overvoltage, overcurrent, short-circuit, and temperature issues. This 30A BMS supports motor power up to 1000W, making it suitable for high-performance applications.
• Durable and Portable Design: Features a premium portable design with a waterproof ABS casing to minimize the risk of internal battery harm. Includes anti-vibration pads to safeguard the battery and mitigate damage during use.
• User-Friendly Indicators and Ports: Integrated LED power indicator for easy monitoring of battery charge level, a theft-proof lock for security, and a universal USB port (5V 1A) for charging external devices like phones or speakers.
• Outstanding Performance: Constructed with Grade A quality cells, ensuring 1000+ cycles with at least 80% capacity retention for long-term reliability. No recycled cells are used.
• XT60 Female Connector: Comes with an XT60 female connector for reliable connection to your electric bicycle. A conversion cable is provided if your motor connector is not XT60 style.

3. What's in the Box

Upon unpacking, please ensure all the following items are present:

• 1x Varstrom 48V20Ah Ebike Lithium Battery
• 1x Battery Fix Plate
• 4x Screws for mounting
• 1x 3A Fast Charger
• 2x Keys for the safe lock
• 1x User Manual (this document)

4. Specifications

5. Installation

The Varstrom 48V20Ah Ebike Lithium Battery is designed for easy installation on most bike frames. Follow these general steps:

1. Prepare the Mounting Area: Identify a suitable location on your bike frame, typically the downtube, where the battery fix plate can be securely attached using the provided screws. Ensure there is enough clearance for the battery.
2. Attach the Fix Plate: Securely fasten the battery fix plate to your bike frame using the provided screws. Make sure it is firmly attached and does not wobble.
3. Install the Battery: Slide the battery onto the fix plate until it clicks into place. Use the key to lock the battery onto the plate for security and to prevent accidental detachment.
4. Connect to Motor: Connect the XT60 female connector from the battery to your e-bike motor's corresponding connector. If your motor uses a different connector type, utilize the provided conversion cable.

6. Operation

Operating your Varstrom battery is straightforward. Follow these steps for daily use:

1. Power On/Off: Locate the power switch on the battery. Press the switch to turn the battery on (indicated by 'I' or a lit LED) or off (indicated by 'O').
2. Check Battery Level: Press the button next to the LED power indicator lights to view the current charge level. The number of lit LEDs corresponds to the remaining battery capacity.
3. Using the USB Port: The integrated USB port (5V 1A) allows you to charge your mobile devices or other small electronics. Simply connect your device's USB cable to the battery's USB port.
4. Security Lock: Use the provided keys to lock the battery securely to its mounting plate. This prevents theft and ensures the battery remains attached during rides.

7. Charging Instructions

To charge your Varstrom 48V20Ah Ebike Lithium Battery:

1. Connect the Charger: Plug the 3A fast charger into a standard wall outlet.
2. Connect to Battery: Insert the charger's output plug into the battery's charge socket. The suggested charging voltage for the 48V battery is 54.6V.
3. Monitor Charging: The charger typically has an indicator light that changes color (e.g., red to green) to show charging status. The battery's LED indicator may also show charging progress.
4. Disconnect After Charging: Once fully charged (approximately 6-7 hours), disconnect the charger from the battery and then from the wall outlet.

8. Maintenance

Proper maintenance ensures the longevity and optimal performance of your Varstrom battery:

• Regular Charging: Do not allow the battery to fully discharge for extended periods. Charge it regularly, even if not in use, to maintain cell health.
• Storage: If storing the battery for a long time, charge it to about 50-60% capacity and store it in a cool, dry place away from direct sunlight and extreme temperatures. Recharge every 2-3 months.
• Cleaning: Wipe the battery casing with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners. Ensure the charging and discharge ports are clean and free of debris.
• Water Resistance: The battery features a waterproof casing, but it is not designed for submersion. Avoid direct contact with heavy rain or water jets.
• Temperature: Operate and charge the battery within recommended temperature ranges (typically 0°C to 45°C for charging, -20°C to 60°C for discharge).

9. Troubleshooting

If you encounter issues with your Varstrom battery, consider the following common solutions:

• Battery Not Turning On: Ensure the power switch is in the 'ON' position. Check if the battery is securely connected to the mounting plate and that the key is in the 'ON' position if applicable. Verify the battery has sufficient charge using the LED indicator.
• Battery Not Charging: Check if the charger is properly plugged into both the wall outlet and the battery. Ensure the charger's indicator light is on. Inspect the charging port and charger cable for any damage.
• Reduced Range/Performance: This could be due to low tire pressure, excessive load, riding in cold weather, or an aging battery. Ensure the battery is fully charged before each ride.
• Motor Not Receiving Power: Verify all connections between the battery, motor, and controller are secure. Check if the battery is turned on and fully charged.

The intelligent 30A BMS provides protection against various electrical faults. If the battery enters a protected state, it may temporarily shut down. Disconnect and reconnect the battery, or try charging it, to reset the BMS. If problems persist, please contact Varstrom customer support.

10. Safety Information

Your safety is paramount. Adhere to these safety guidelines:

• Use only the specified 54.6V/3A charger provided with your battery. Using an incompatible charger can cause damage or fire.
• Do not disassemble, puncture, or modify the battery. This can lead to serious injury or fire.
• Keep the battery away from heat sources, open flames, and direct sunlight.
• Avoid exposing the battery to extreme temperatures, both hot and cold.
• Do not short-circuit the battery terminals.
• Keep out of reach of children and pets.
• If the battery is damaged, swollen, or leaking, discontinue use immediately and dispose of it properly according to local regulations.
• Always ensure the battery is securely mounted to your bike to prevent it from falling off during operation.

11. Warranty and Support

Varstrom is committed to providing quality products and excellent customer service. We are responsible for product and logistic services. For any issues or questions regarding your Varstrom 48V20Ah Ebike Lithium Battery, please contact our customer support team. Good communication helps us resolve problems faster and more efficiently.

Please refer to your purchase documentation for specific warranty terms and conditions.