Summary of 3.7V 18650 3000mAh ICR 18650 Rechargeable Battery​

The 3.7V 18650 3000mAh lithium-ion battery features high energy density, low internal resistance, and a powerful 5C (15A) continuous discharge capability. With over 500 cycles of reliable performance and strong safety design, it is ideal for high-drain applications such as e-bikes, power tools, drones, and custom battery packs, while supporting full OEM/ODM customization.

3.7V 18650 3000mAh Battery​ Specification

Model: 18650 Lithium Battery

Rated Capacity: 3000mAh

Energy: 11.1Wh

Energy Density: 241.3Wh/kg

Minimum Capacity: 2950mAh

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: 46g

Internal Resistance: Less than 18mΩ

Standard Discharge Current: 0.2C (600mA)

Standard Charge Current: 0.2C (600mA)

Max Continuous Discharge Rate: 5C (15A)

Max Continuous Charge Current: 2C (6A)

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 on Rechargeable Battery​

🔋 3000mAh High Capacity

Supports extended runtime for high-energy devices and industrial equipment without compromising form factor.

⚡ 5C Discharge Rate = 15A Output

Delivers powerful current output, ideal for performance-demanding systems like e-bikes, drones, and cordless drills.

🔁 500+ Cycle Life

With proper usage and charging protocols, this cell retains over 80% of its capacity after 500 charge/discharge cycles, ensuring long-term ROI.

🧯 Enhanced Safety

Manufactured with top-tier separators, low impedance chemistry, and stable thermal properties. Pair it with a BMS for optimal safety.

🛠️ Industrial-Grade Manufacturing

Built under ISO9001:2015 certified processes. Each cell undergoes rigorous testing before delivery.

🧰 Applications

• High-drain flashlights & tactical gear

• Electric bicycles and scooters (E-bike battery packs)

• Cordless power tools and garden equipment

• Portable solar power banks

• Medical or military-grade electronic devices

• RC models, drones, and robotic systems

🧩 Custom Battery Pack Design Available

We offer OEM/ODM services for your battery project:

• Spot welding (nickel tabs)

• Custom PCM/BMS integration

• Series or parallel configuration

• Wire harness & connector solutions

• Custom labeling & shrink tubing

Need a 4S1P, 3S2P, or more complex pack with 3000mAh 18650 cells? We’ve got you covered.

❓ FAQ – 18650 3000mAh 5C 3.7V Li-ion Battery Cell

1. What does 5C mean for this battery?

5C means the battery can continuously discharge current up to 5 times its rated capacity.
For 3000mAh, 5C = 15A continuous discharge current, making it suitable for high-drain devices.

2. Is this a protected cell?

No, this is an unprotected 18650 lithium-ion cell, intended for integration into packs with an external BMS (Battery Management System). Protected versions can be provided upon request.

3. How long will this battery last?

Under standard usage (charging at 0.5C and discharging at ≤5C), this cell offers ≥500 cycles, maintaining ≥80% of original capacity.

4. Can I use it in DIY or commercial battery packs?

Yes. This cell is widely used in both DIY and commercial applications. We also offer pack assembly, spot welding, connector soldering, and custom battery pack services.

5. What’s the lead time for bulk orders?

Typical lead time:

• Samples: 3–7 working days

• Bulk: 10–20 working days (depending on quantity & customization)

Battery 18650 Battery​ Cell List

Nominal  Voltage	Nominal     Capacity	Diameter            (±0.5mm)	Length (±0.5mm)	Weight       (±5%)	Max Charge Current	Max Discharge  Current	Max Internal Resistance
3.7V	1200mAh	18mm	65mm	36g	1.2A	1.2A	60mΩ
3.7V	1200mAh	18mm	65mm	36g	1.2A	12A	25mΩ
3.7V	1500mAh	18mm	65mm	39g	1.5A	4.5A	60mΩ
3.7V	1500mAh	18mm	65mm	39g	1.5A	22.5A	17mΩ
3.7V	1600mAh	18mm	65mm	39g	1.6A	4.8A	55mΩ
3.7V	1800mAh	18mm	65mm	39g	1.8A	1.8A	55mΩ
3.7V	2000mAh	18mm	65mm	43g	2A	6A	45mΩ
3.7V	2000mAh	18mm	65mm	44g	2A	16A	18mΩ
3.7V	2000mAh	18mm	65mm	44g	4A	20A	18mΩ
3.7V	2000mAh	18mm	65mm	44g	6A	30A	15mΩ
3.7V	2200mAh	18mm	65mm	45g	2.2A	6.6A	45mΩ
3.7V	2200mAh	18mm	65mm	45g	2.2A	11A	20mΩ
3.7V	2200mAh	18mm	65mm	45g	2.2A	17.6A	20mΩ
3.7V	2200mAh	18mm	65mm	45g	4.4A	30A	18mΩ
3.7V	2400mAh	18mm	65mm	48g	2.4A	7.2A	40mΩ
3.7V	2500mAh	18mm	65mm	48g	2.5A	7.5A	40mΩ
3.7V	2500mAh	18mm	65mm	45g	5A	20A	18mΩ
3.7V	2500mAh	18mm	65mm	45g	5A	30A	15mΩ
3.7V	2600mAh	18mm	65mm	50g	2.6A	7.8A	40mΩ
3.7V	2600mAh	18mm	65mm	45g	5.2A	13A	18mΩ
3.6V	3000mAh	18mm	65mm	48g	3A	9A	40mΩ
3.6V	3000mAh	18mm	65mm	46g	6A	15A	18mΩ
3.6V	3200mAh	18mm	65mm	48g	3.2A	9.6A	40mΩ
3.6V	3500mAh	18mm	65mm	46g	7A	10A	18mΩ