18650 850mAh 35C 2.90V Sodium-Ion Battery

Features

1. Inherent Safety: Sodium-ion chemistry is often considered less prone to thermal runaway compared to some high-energy lithium-ion chemistries, enhancing safety .

2. High Power Capability (35C): Capable of delivering very high discharge currents (up to ~29.75A continuously), making it suitable for power-intensive applications.

3. Excellent Low-Temperature Performance: Typically performs better than lithium-ion batteries in low-temperature environments .

4. Fast Charging: Supports rapid charging, potentially up to 1C or higher.

5. Abundant Raw Materials: Utilizes sodium, which is more abundant and geographically widespread than lithium, potentially leading to lower long-term costs and better supply chain stability.

6. Environmentally Friendly: Some chemistries can be made from more environmentally benign materials and may have a simpler recycling process.

Specifications

Applications

• Power Tools: Drills, saws, and other cordless tools requiring high burst power.

• Electric Mobility: High-performance electric scooters, skateboards, or drones.

• Energy Storage Systems (ESS): Particularly for applications requiring high power density and good safety, such as uninterruptible power supplies (UPS) or grid stabilization .

• Starter Batteries: For small engines or motors requiring high cranking currents.

• High-Discharge Flashlights: Tactical or professional lighting equipment.

Warnings & Safety Instructions

Charging

• Use Designated Chargers: Charge only with a charger designed for sodium-ion batteries with the correct voltage and current limits. Using a lithium-ion charger is unsafe.

• Temperature Control: Do not charge outside the specified temperature range (0°C to +55°C). Charging below 0°C may cause plating and permanent damage; charging above 55°C is hazardous.

• Voltage/Current Limits: Do not exceed the maximum charge voltage or current.

Discharging

• Current Limit: While rated for 35C continuous discharge, avoid sustained operation at the maximum limit in high-temperature environments to preserve cycle life.

• Voltage Limit: Do not discharge below the cut-off voltage (2.0V). Deep discharge can damage the battery.

• Temperature: Monitor battery temperature during high-rate discharge.

Storage

• Ideal Storage Charge: For long-term storage, store the battery at a state of charge between 30% and 50%.

• Storage Environment: Store in a cool, dry place away from direct sunlight and moisture.