Cylindrical Cells

High-performance cylindrical lithium batteries for extreme temperature applications

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Product Overview

Our cylindrical lithium batteries are engineered for applications requiring reliable power in extreme temperature environments. From military communications in Arctic conditions to industrial controls in desert heat, these cells deliver consistent performance where conventional batteries fail.

Extreme Temperature Range

Operates reliably from -40°F to 185°F (-40°C to +85°C) without performance degradation

Built-in Safety

Integrated protection circuits prevent overcharge, overdischarge, and thermal runaway

High Power Output

Delivers consistent power with low internal resistance across temperature range

Long Cycle Life

Over 5000 charge-discharge cycles maintain 80% capacity retention

Industrial battery application

Technical Specifications

Nominal Voltage:3.2V / 3.6V / 3.7V
Nominal Capacity:2500mAh - 5000mAh
Operating Temperature:-40°F to 185°F (-40°C to +85°C)
Storage Temperature:-49°F to 185°F (-45°C to +85°C)
Cycle Life:>5000 cycles @ 0.5C
Max Charge Rate:1C (25°C)
Max Discharge Rate:3C continuous, 5C peak
Cell Chemistry:LiFePO4 / Li-ion
Safety Features:Built-in protection circuit
Certifications:UL, CE, UN38.3, IEC62133

Available Models

WT18650-3200

Capacity:3200mAh
Voltage:3.2V
Chemistry:LiFePO4
Dimensions:18.5 × 65.2mm
Weight:45g

Applications:

  • Military Communications
  • Emergency Equipment
  • Portable Devices

WT26650-5000

Capacity:5000mAh
Voltage:3.2V
Chemistry:LiFePO4
Dimensions:26.2 × 65.0mm
Weight:85g

Applications:

  • Industrial Controls
  • Power Tools
  • Medical Devices

WT21700-4000

Capacity:4000mAh
Voltage:3.7V
Chemistry:Li-ion
Dimensions:21.0 × 70.0mm
Weight:68g

Applications:

  • Electric Vehicles
  • Energy Storage
  • Power Banks

Technical Documentation

Download detailed specifications, test reports, and application guides

Key Differentiator

Why Choose Extreme Temperature Batteries?

See how our advanced LiFePO₄ technology outperforms standard batteries in demanding conditions

Feature

Standard LiFePO₄

Extreme Temp LiFePO₄

SUPERIOR

Operating Temp

32°F to 113°F
(0°C to 45°C)
-40°F to 149°F
(-40°C to 65°C)
3x WIDER RANGE

Safe Cold Charging

No
Charging Damage Risk
Yes
SAFE AT ALL TEMPS

Cycle Life

~2000 cycles
Standard Lifespan
5000+ cycles*
2.5x LONGER LIFE

Total Cost

High
Frequent Replacement
Cost-Effective
LOWER TCO

* 5000+ cycles achieved under certain circumstances. Actual performance may vary based on operating conditions.

Ready to upgrade to superior battery technology?

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Ready to Power Your Application?

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