1. Introduction
This manual provides essential information for the safe and effective use of your VLM 3.7V 1200mAh High Capacity Battery. Designed as a compatible replacement and upgrade for various Sky Viper drone models, this battery offers extended flight times and reliable performance. Please read this manual thoroughly before first use to ensure proper operation and longevity of your battery.
2. Safety Information
Lithium Polymer (LiPo) batteries require careful handling. Failure to follow these safety guidelines can result in fire, personal injury, and property damage.
- Charging: Always use a charger specifically designed for LiPo batteries. Never leave charging batteries unattended. Charge on a non-flammable surface away from flammable materials.
- Storage: Store batteries in a cool, dry place, away from direct sunlight and extreme temperatures. Do not store fully charged or fully discharged for extended periods.
- Handling: Do not puncture, drop, short-circuit, or disassemble the battery. Avoid exposing the battery to water or moisture.
- Damage: If the battery appears swollen, damaged, or leaks, discontinue use immediately and dispose of it properly.
- Disposal: Dispose of batteries according to local regulations. Do not dispose of in household waste.
3. Product Features
- Voltage: 3.7V
- Capacity: 1200mAh (Milliampere-hour)
- Energy: 4.44Wh (Watt-hour)
- Compatibility: Specifically designed for Sky Viper Drone models V2400HD, V2450FPV, V2450GPS, S1700, and S1750.
- High Capacity: Provides extended flight times compared to standard batteries.
- Connector Type: Features a standard red JST connector for easy plug-and-play use.
4. Setup and Installation
4.1 Initial Charging
Before first use, fully charge the battery. Use a compatible LiPo battery charger. Connect the battery's red JST connector to the charger's output port. Follow the charger's instructions for safe charging. Charging time will vary depending on the charger's output current.

Image: A close-up view of the VLM 3.7V 1200mAh battery, highlighting its label with specifications and the red JST connector.
4.2 Battery Installation in Drone
- Ensure the drone's power is off.
- Locate the battery compartment on your Sky Viper drone. Refer to your drone's specific user manual for exact location and opening instructions.
- Carefully insert the VLM battery into the compartment, ensuring the connector aligns with the drone's battery port.
- Connect the red JST connector from the battery to the corresponding port on the drone. Ensure a secure connection.
- Close the battery compartment securely.

Image: The VLM 3.7V 1200mAh battery displayed alongside several Sky Viper drone models, illustrating its compatibility.
5. Operating the Battery
Once installed and charged, the battery powers your Sky Viper drone. The 1200mAh capacity provides extended flight times. Monitor your drone's battery indicator (if available) to know when to land and recharge. Avoid completely draining the battery, as this can reduce its lifespan.
Video: A demonstration of the VLM 3.7V 1200mAh battery, showcasing its physical appearance and connector type. This video helps visualize the product for proper handling and connection.
6. Maintenance and Storage
- Regular Charging: For optimal battery life, avoid overcharging or deep discharging. Charge the battery after each use.
- Long-Term Storage: If storing the battery for an extended period (more than a week), charge it to approximately 50-60% capacity. This helps preserve battery health.
- Temperature: Store batteries at room temperature (20-25°C or 68-77°F). Avoid extreme heat or cold.
- Cleaning: Keep the battery and its connectors clean and free of dust or debris. Use a dry, soft cloth for cleaning.
7. Troubleshooting
Problem | Possible Cause | Solution |
---|---|---|
Battery not charging | Incorrect charger, loose connection, damaged battery. | Ensure charger is compatible and connected securely. Inspect battery for damage. If damaged, dispose of safely. |
Short flight time | Battery not fully charged, aging battery, drone issues. | Ensure full charge. If battery is old, consider replacement. Check drone for excessive power draw. |
Battery not fitting in compartment | Incorrect battery model, obstruction in compartment. | Verify battery compatibility with your specific drone model. Check for any debris or obstructions in the compartment. |
8. Specifications
- Brand: VLM
- Battery Cell Composition: Lithium Polymer
- Battery Capacity: 1200 Milliampere Hour (mAh)
- Voltage: 3.7V
- Item Weight: Approximately 4 ounces
- Package Dimensions: Approximately 6 x 5 x 1 inches
- Compatible Drone Models: Sky Viper V2400HD, V2450FPV, V2450GPS, S1700, S1750
9. Warranty and Support
For warranty information or technical support, please contact VLM Group LLC, the manufacturer. Refer to your purchase documentation or the seller's information for contact details. Please have your product model number (B09GS39DR3) and purchase date ready when contacting support.
Manufacturer: VLM Group