18650 2500mAh 12C
18650 2500mAh battery
18650 2500mAh
18650 battery size

Rechargeable Lithium Ion Battery Cell 3.7V 18650 2500mAh 12C 30A

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Summary of 18650 2500mAh 12C Battery 18650 Lithium Ion Battery​

The 3.7V 2500mAh 12C 18650 rechargeable lithium battery is a high-drain cell designed for demanding applications that require strong and stable power output. With a 12C continuous discharge rate up to 30A, low internal resistance, and over 500 charge cycles, it delivers an excellent balance of capacity, performance, and durability. Fully certified to international safety standards, this cell is ideal for e-bikes, RC vehicles, power tools, vape devices, and other high-power electronics, especially when integrated with a BMS or protection circuit for enhanced safety.

3.7 18650 Lithium Ion Rechargeable Battery​ Specification

Model: 18650 Rechargeable Lithium Battery

Rated capacity: 2500mAh

Energy: 9.25Wh

Energy Density: 205.56Wh/kg

Minimum Capacity: 2450mAh

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: 45g

Internal Resistance: Less than 15mΩ

Standard Discharge Current: 0.2C (500mA)

Standard Charge Current: 0.2C (500mA)

Max Continuous Discharge Rate: 12C (30A)

Max Continuous Charge Current: 2C (5A)

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 – Li-ion Battery 18650​

✅ High Continuous Discharge (30A)

Perfect for motors, power tools, and energy-intensive circuits. The 12C rating means the battery can discharge at 12 times its capacity, i.e., 2500mAh x 12 = 30,000mA (30A) continuously without overheating or dropping voltage significantly.

🔋 Optimal Capacity (2500mAh)

Offers a good balance between runtime and current output.

🔁 Rechargeable with Extended Service Life

Designed to withstand hundreds of charge–discharge cycles while maintaining stable capacity and reliable performance.

🔒 Thermal and Circuit Protection (optional with PCM)

Maintains stability under high load conditions, especially with BMS or protected versions.

🌱 Eco-Friendly Alternative to Disposable Cells

Reduced environmental impact with lower waste output over time.

This high-drain capability makes it an excellent power source for Electric bicycle, skateboards; RC vehicles and drones; Vape mods; High-power LED torches; Cordless tools. For applications that require bursts of high energy, this 18650 30A lithium battery delivers consistent and safe performance.

❓ FAQ – Frequently Asked Questions

Q1: Do rechargeable batteries need charging before use?

A: Most rechargeable batteries come partially charged and can be used right out of the box. However, giving them a full initial charge helps calibrate the battery and ensures optimal performance and capacity.

Q2: What voltage should I charge my 18650 battery at?

A: A standard 18650 lithium-ion battery should be charged to a maximum of 4.2V per cell. Charging above this voltage can damage the battery and create safety risks, so a proper Li-ion charger is essential.

Q3: What is the 80 20 rule for charging batteries?

A: The 80/20 rule for charging batteries means keeping the charge level roughly between 20% and 80% instead of fully draining or fully charging. Staying within this range reduces stress on the battery and helps extend its overall lifespan.

Q4: How to make lithium batteries last longer?

A: Avoid frequent full discharges and prolonged charging to 100%, and keep the charge between about 20–80% whenever possible. Also store and use them in moderate temperatures, as heat and extreme cold accelerate battery aging.

Q5: Can a totally dead battery be recharged?

A: Sometimes a totally dead battery can be recharged if it has only been over-discharged and the cells are not physically damaged. However, if the voltage has dropped too low for too long, the battery may be permanently damaged and unsafe to recharge.

 

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