Varstrom Downtube Haiyue Version Electric Bicycle Battery User Manual

1. Introduction

Thank you for choosing the Varstrom Downtube Haiyue Version Electric Bicycle Battery. This manual provides essential information for the correct and safe use, installation, operation, maintenance, and troubleshooting of your new e-bike battery. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.

2. Safety Information

Your Varstrom battery is equipped with an advanced Battery Management System (BMS) for protection against overcharging, over-discharge, short circuits, and temperature extremes. Adhering to the following safety guidelines is crucial:

• Never put the battery into water or seawater. Store batteries in a cool, dry place.
• Never expose batteries to fire or excessive heat.
• Never reverse the positive (+) and negative (-) terminals when connecting.
• Never disassemble or modify the battery.
• Do not short-circuit the (+) and (-) terminals with other metal objects.
• Do not store batteries with metal objects such as hairpins, coins, or screws.
• Do not hit the battery with a hammer, step on it, or throw it.
• Do not solder batteries directly.
• Do not penetrate batteries with nails or other sharp tools.
• If liquid leaks onto your skin or clothes, wash immediately with fresh water.
• If liquid leaking from the battery gets into your eyes, do not rub your eyes. Wash them well with clean water and seek medical attention immediately.
• While using, testing, or reserving batteries, if you notice the battery becoming hot, emitting a smell, changing color, deforming, or any other abnormality, stop using or testing immediately, and attempt to isolate and keep it away from the battery.
• Store batteries out of reach of children to avoid accidental ingestion.
• When disposing of the battery, ensure it is non-conducting by applying insulating tape to the (+) and (-) terminals.

3. Packing List

Upon receiving your Varstrom E-bike Battery, please verify that all items listed below are included and in good condition:

1. Ebike Battery x 1
2. Battery Mount Rail x 1
3. Power Adapter Cable x 1
4. Rubber Spacer x 2
5. Screw x 4
6. Battery Charger x 1
7. Safety Lock Key x 1
8. Manual x 1

4. Product Features and Components

The Varstrom Downtube Haiyue Version battery is designed for reliability and ease of use. Key components and features include:

• Shell: Durable outer casing for protection.
• Cell Holder: Secures individual battery cells.
• Cells: High-quality L*G cells for reliable power.
• BMS (Battery Management System): Provides comprehensive protection (overcurrent, overvoltage, overpower, over-discharge, overcharge, short circuit).
• Battery Base: The mounting interface for the battery on the bike frame.
• Battery Handle: Integrated carry handle for easy removal and installation.
• Type-C Port: 5V 2A output for charging devices.
• Dual Zip-Tie Slots on Base: Allows for flexible mounting if standard holes don't align.
• Waterproof Breather Vent: IP-rated vent to keep water out while allowing heat to escape.
• Bottom-mounted Charging Fuse: External fuse for easy replacement without opening the case.
• Battery Bracket: Left-and-right interlocking rails to secure cells and reduce vibration.
• Auto Spot-Weld Process: Precision-welded nickel tabs for high current handling and durability.

Control Interface:

• Battery Indicator Light: Quick check of battery level at a glance (Red: 10%, Yellow: 11-50%, Green: 51-100%).
• Safe Lock: Locks the battery securely onto the frame.
• Power Switch: Press once to turn on, press again to turn off.
• Battery Base Connector: 6-pin blade type, screw-fastened from the outside for easy swapping.

5. Specifications

The Varstrom Downtube Haiyue Version battery is available in several configurations. Please refer to the specific model you purchased for exact specifications.

General Specifications:

• Type: Lithium battery
• Waterproof Rating: IP 67
• Maximum Continuous Discharge Current of Protection Board: 30A
• Overcurrent Protection Current: 90A
• Battery Base: 6-pin plug-in interface
• Charging Port Type: DC2.1
• Charging Temperature: 0-45℃
• Discharging Temperature: -15-65℃
• Charging Method: CC/CV (Constant Current/Constant Voltage Charging)
• Battery Case Dimensions: 365*85*107mm
• Cycle Life: 1000+ cycles
• Warranty: 2 Years

48V 20Ah Haiyue Battery:

36V 24Ah Haiyue Battery:

36V 20Ah Haiyue Battery:

6. Setup and Installation

The Varstrom Downtube Haiyue Version battery is designed for easy installation on most e-bike frames with standard bottle cage mounting holes. Follow these steps for proper setup:

Installation Steps:

1. Step 1: Mount the Battery Rail: Attach the battery mount rail to your bicycle frame using the provided screws and rubber spacers. Ensure it is securely fastened.
2. Step 2: Slide in the Battery: Align the battery with the mounted rail and slide it into place until it clicks securely.
3. Step 3: Lock the Battery: Use the safety lock key to lock the battery onto the frame, preventing theft and ensuring it stays in place during rides.

Video Guide:

For a visual guide on battery removal and installation, please watch the official video:

7. Operation

Operating your Varstrom E-bike Battery is straightforward:

• Power Switch: Press the power switch once to turn the battery on. Press it again to turn it off.
• Battery Power Indicator: Check the LED indicator lights on the battery to quickly assess the charge level:
  • ●○○○: 0%~25%
  • ●●○○: 26%~50%
  • ●●●○: 51%~75%
  • ●●●●: 76%~100%
• USB Charge Socket: The integrated USB port (5V 2A) supports charging most cell phones. Simply connect your device to the port.
• Charging the Battery: Connect the provided charger to the DC2.1 charging port on the battery. The charger indicator will show red during charging and turn green when fully charged. Ensure the battery's power switch is ON during charging for a full charge.
• Discharge Socket: This is the main power output. Connect the discharge cable from the battery to your e-bike controller's power cable. Ensure correct polarity: Red for positive (+), Black for negative (-).

8. Maintenance

Proper maintenance will extend the life and performance of your Varstrom battery:

General Battery Maintenance:

• Always use the factory's professional charger. Do not use other chargers.
• Recharge the battery before it is completely empty (deep discharge).
• After installing the battery, fully recharge it before first use. After 3-5 charge/discharge cycles, the battery capacity will reach its maximum value.
• Store the battery in a well-ventilated, dry, and clean environment, away from fire or heat sources. The ideal operating temperature is 15-35℃. Performance may be reduced outside this range.
• Confirm that the battery power matches your motor's power requirements before ordering or using.

Storage Instructions:

• For long-term storage (over three months), the recommended temperature is 23±5℃, with 65±20%RH humidity.
• Recharge the battery once every three months and keep it at 60%-80% charge level during storage.

9. Troubleshooting (FAQ)

Here are some common issues and their solutions:

Battery Not Charging:

1. Check Charger Indicator: The charger light should be red during charging and green when fully charged or not charging.
2. Verify Voltage Match: Ensure the charger voltage matches the battery voltage. For example:
   • Charger 29.4V = 24V battery
   • Charger 42V = 36V battery
   • Charger 54.6V = 48V battery
   • Charger 58.8V = 52V battery
   • Charger 67.2V = 60V battery
   • Charger 84V = 72V battery
3. Battery Fully Charged: Check if the battery is already fully charged (green light on charger).
4. Wire Connection: Ensure all wire connections are correct and secure.
5. Fuse Burnout: If your charger current is over 3A, check for a fuse burnout. Replace if necessary.

Battery Not Working:

1. Power Switch: Make sure the battery's power switch is turned ON. Try resetting the switch and waiting 3 seconds.
2. Battery Indicator & Fuse: If the switch is ON and the battery indicator lights up, check the fuse. If the fuse is burnt out, replace it.
3. Connector Check: Ensure the connector between the battery and the e-bike controller is correct to avoid reversed connection.

Battery Capacity Does Not Match Actual Capacity:

1. Full Charge: Ensure the battery is fully charged. Turn on the switch when recharging.

Other Issues:

• USB Port: Yes, this battery has a 5V 2A Type-C USB port for charging phones and other devices.
• If you encounter other problems not covered here, please contact your supplier/seller for assistance.

10. User Tips

• Initial Charging: Always fully charge your new battery before its first use to optimize its lifespan and performance.
• Regular Checks: Periodically check all connections for tightness and ensure the battery is securely mounted to prevent issues during rides.
• Temperature Awareness: Be mindful of extreme temperatures. While the battery is designed for a wide range, optimal performance and longevity are achieved within the recommended operating and storage temperatures.

11. Warranty and Support

Your Varstrom battery comes with a 2-year warranty. For warranty claims or technical support, please contact your seller or supplier.

For detailed item guides and documents, including a PDF version of the user manual, please refer to the following link: User Manual (PDF)

To activate your warranty, please fill in the appropriate product information via the short link or QR code provided in the original manual. Varstrom adheres to personal privacy regulations and does not involve personal information in the activation process.