18650 LiFePO4 Battery Cell 3.2V (1600mAh-2000mAh Available)

Core Material: Premium Lithium Iron Phosphate (LiFePO4) for maximum thermal stability.
True Capacity: 1600mAh – 2000mAh options (100% factory tested, no fake capacity).
High Performance: Supports up to 3C continuous discharge and 5C peak discharge.
Longevity: Exceptional cycle life of ≥ 2000 cycles (80% DOD), significantly reducing replacement costs.
Compliance: Designed to meet UN38.3, CE, and RoHS standards.

The CBK 18650 LiFePO4 cell is a high-density, ultra-safe energy storage solution engineered for demanding environments. Unlike traditional NMC chemistries, this cell utilizes a robust Lithium Iron Phosphate structure, completely eliminating the risk of thermal runaway while delivering consistent power over thousands of cycles.

Engineered for multi-cell pack assembly, ideal for:

Portable medical equipment
Solar street lighting arrays
Compact power tools and vacuum cleaners
Emergency backup power systems

1. Basic Specifications

Chemistry: Lithium Iron Phosphate (LiFePO4 / LFP)
Form Factor: Cylindrical 18650
Nominal Voltage: 3.2V
Nominal Capacity: 1600mAh / 1800mAh / 2000mAh (Available options)
Energy: 5.12Wh – 6.40Wh
Cycle Life: ≥ 2000 Cycles @ 0.5C/0.5C, 80% DOD, 25°C
Internal Resistance (AC IR): ≤ 30 mΩ (at 1kHz)

2. Electrical Characteristics

Standard Charge Voltage: 3.65V ± 0.05V
Discharge Cut-off Voltage: 2.5V
Standard Charge Current: 0.5C
Max. Continuous Charge: 1C
Max. Continuous Discharge: 3C (Customize available for higher rate)
Peak Discharge Current: 5C (for 10 seconds)

3. Physical Characteristics

Diameter: 18.2 mm ± 0.2 mm
Height: 65.2 mm ± 0.2 mm
Weight: Approx. 40g – 42g
Terminal Type: Flat Top / Button Top (Optional)

4. Operating Environment

Charge Temperature: 0°C to 45°C (32°F to 113°F)
Discharge Temperature: -20°C to 60°C (-4°F to 140°F)
Storage Temperature: -10°C to 35°C (Less than 3 months)

Custom Pack Assembly Available: Need a specific voltage or footprint? Our engineering team provides in-house spot welding, custom BMS integration, and PVC wrapping. [Contact us for bespoke solutions.]