18650 1800mAh 5C Lithium-ion Cell
- Model
- 18650-1800-5C
- Nominal Voltage
- 3.70V
- Nominal Capacity
- 1,800mAh
- Nominal Energy
- 6.66Wh
- Dimensions
- Ø18.25 ± 0.15 × 65.25 ± 0.15 mm
- Weight
- 45.0 ± 0.5g
Key Features
- 1800mAh Rated Capacity — Provides a nominal 1800mAh capacity for compatible rechargeable battery-pack applications.
- 5C Continuous Discharge — Supports continuous discharge at up to 9A under the specified operating conditions.
- 8C Pulse Discharge — Delivers up to 14.4A instantaneous discharge for less than 60 seconds.
- Low Internal Resistance — Cell impedance below 20mΩ supports efficient current delivery and reduced voltage drop.
Technical Specifications
- Model
- 18650-1800-5C
- Product Dimensions
- Ø18.25 ± 0.15 × 65.25 ± 0.15 mm
- Product Weight
- 45.0 ± 0.5g
- Nominal Voltage
- 3.70V
- Nominal Capacity
- 1,800mAh
- Nominal Energy
- 6.66Wh
- Maximum Charge Current
- 5C (9A)
- Continuous Discharge Current
- 5C (9A)
- Cycle Life
- 300 cycles
- Charging Temperature Range
- -10°C to 45°C, <75% RH
- Discharging Temperature Range
- -10°C to 40°C, <75% RH
- Cell Specifications
- 18650 Secondary Lithium-ion Cell
Product Overview
The 18650 1800mAh 5C Lithium-Ion Cell is a rechargeable cylindrical battery designed for OEM battery packs and applications requiring reliable current output. It features a 3.7V nominal voltage, 1800mAh rated capacity and up to 9A continuous discharge. For short-duration power demands, the cell supports an 8C pulse discharge of up to 14.4A for less than 60 seconds. With impedance below 20mΩ, a compact 18.25 × 65.25 mm size and an approximate weight of 45 g, it is suitable for professionally engineered lithium-ion battery assemblies.
Product Application
This 18650 1800mAh high-drain lithium-ion cell is suitable for professionally designed battery packs used in portable electronic equipment, power tools, emergency lighting, backup power devices and other OEM energy-storage applications. It is intended for manufacturers and battery-pack assemblers searching for a 3.7V 1800mAh 18650 cell with 5C continuous discharge capability.
Product Selection Guide
Choose this cell when the battery-pack design requires a 3.7V nominal cell, 1800mAh capacity, up to 9A continuous discharge and up to 14.4A pulse discharge for less than 60 seconds. Confirm the required series-parallel configuration, total pack current, charging voltage, discharge cutoff, operating temperature and battery-management system before assembly. Cells used in the same battery pack should be matched for capacity, voltage and internal resistance. Pack design and assembly should be completed by a qualified battery manufacturer.
Product FAQs
What is the maximum continuous discharge current of this 18650 cell?
The specification lists a maximum continuous discharge rate of 5C. For an 1800mAh cell, 5C corresponds to 9A under the specified test and operating conditions.
What is the maximum pulse discharge current?
The cell supports an instantaneous discharge rate of up to 8C for less than 60 seconds. For an 1800mAh cell, this corresponds to a maximum pulse current of 14.4A.
How should the 18650 1800mAh cell be charged?
The standard charging rate is 0.5C, equivalent to 0.9A. Charge using a lithium-ion CC/CV charging method up to 4.20 ± 0.03V, with appropriate temperature monitoring and protection.
Can these cells be assembled into a custom battery pack?
Yes. The cells may be used in professionally designed series-parallel battery packs. The pack requires matched cells, an appropriate BMS, current protection, temperature management and a charger compatible with the final pack voltage and lithium-ion chemistry.
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