Summary of 18650 3200mAh 3C 3 7V Rechargeable Battery​

The Cell is a premium-grade cylindrical lithium-ion cell engineered for high energy density, long-lasting performance, and advanced safety. With an exceptional energy density of up to 246.67Wh/kg, this cell delivers large capacity in a compact form factor, making it ideal for demanding applications that require efficiency, reliability, and extended runtime. Featuring a built-in pressure relief valve (CID), low internal resistance, and excellent cell consistency, it ensures safer operation, higher usable capacity, and a longer service life—meeting the expectations of professional users and system integrators.

18650 Battery 3200mAh Specification

Model: 18650

Rated capacity: 3200mAh

Energy: 11.84Wh

Energy Density: 246.67Wh/kg

Minimal Capacity: 3150mAh

Rated voltage: 3.7V

Discharge Cut-off Voltage: 2.75V

Charge Cut-off Voltage: 4.2V

Cycle Life: More than 500 cycles

Dimensions: Φ18*65mm

Weight: 48g

Internal Resistance: Less than 40m Ω

Standard Discharge Current: 0.2C (640mA)

Standard Charge Current: 0.2C (640mA)

Max Continuous Discharge Rate: 3C (9.6A)

Max Continuous Charge Current: 1C (3.2A)

Charging Temperature: 0 to 45℃;

Discharge Temperature: -20 to 65℃

Storage Temperature:

• -20℃~25℃: 12 months
• -20℃~45℃: 3 months
• -20℃~60 ℃: 1 month

Key Features – 18650 Li-ion Rechargeable Battery 3200mAh​

⚡ Ultra-High Energy Density (Up to 246.67Wh/kg)

With an ultra-high energy density, this 18650 lithium-ion battery cell is able to store more energy within the same compact cylindrical form factor, allow to design lighter and smaller battery packs without sacrificing performance. The higher energy concentration directly means longer operating time and improved efficiency, making it especially suitable for applications where space and weight optimization are critical.

🔋 Large Capacity & Long Runtime (3200mAh)

This 18650 battery cell delivers extended runtime per charge, enabling devices to operate longer and more reliably. The large capacity helps reduce charging frequency, minimize downtime, and improve overall system endurance, which is particularly valuable for portable electronics, energy storage systems, and high-demand equipment.

🔥 Low Internal Resistance for High Efficiency

The cell is engineered with low internal resistance, which significantly reduces energy loss during both charging and discharging processes. As a result, less heat under high-load conditions, improving thermal stability and operational safety while maintaining high electrical efficiency. This feature also lead to more stable output performance and better cycle life over long-term use.

🛡️ Advanced Safety with Built-in Pressure Relief Valve (CID)

An integrated pressure relief valve, also known as a Current Interrupt Device (CID), is built into the cell to enhance safety under abnormal conditions such as short circuits, overcharging, or excessive internal pressure. When triggered, the CID automatically disconnects the current and releases internal pressure, effectively preventing thermal runaway and significantly reducing the risk of fire, leakage, or explosion.

📊 High Cell Consistency & Stability

Strict control over key parameters such as voltage, capacity, and internal resistance, this cell offers excellent consistency from cell to cell. High consistency improves safety and balance at the battery pack level, increases usable capacity, and reduces uneven aging, ultimately extending overall battery lifespan and delivering more reliable long-term performance.

❓ Frequently Asked Questions (FAQ)

Q1: What not to do with rechargeable batteries?

Q2: Can a lithium battery catch fire when not in use?

Q3: What is so special about an 18650 battery?

Q4: How many times can you recharge an 18650 battery?

Q5: How to wake up 18650?

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