HC04120 3mAh 2.4V Ultra-Rugged LTO Cell 20000 Cycles -40℃~100℃ 20C High Rate for Extreme Environments

HC04120 3mAh 2.4V Ultra-Rugged LTO Cell 20000 Cycles -40℃~100℃ 20C High Rate for Extreme Environments

Product Overview
The ECOLTO HC04120 is a precision-engineered lithium titanate (LTO) cylindrical cell designed for applications where extreme durability, wide temperature tolerance, and rapid power delivery are essential. With 3mAh capacity and 2.4V nominal voltage in an ultra-compact 4×12mm form factor, this micro-cell delivers reliable, maintenance-free power for decades in the most demanding environments—from deep space to deep earth.

Specifications

Charging Characteristics

Discharging Characteristics

Exceptional Cycle Life for Long-Term Reliability
Rated for over 20,000 full charge-discharge cycles with minimal capacity fade, this LTO cell far exceeds the lifespan of conventional lithium-ion and supercapacitor alternatives. This extraordinary longevity enables true fit-and-forget operation in applications where battery replacement is impractical or impossible, dramatically reducing lifetime maintenance costs.

Extreme Temperature Operation Without Compromise
Engineered to perform reliably across an unprecedented -40℃ to 100℃ temperature range, the HC04120 delivers consistent power in environments that destroy ordinary batteries. Whether deployed in Arctic monitoring stations, high-temperature industrial sensors, or aerospace systems, it maintains stable voltage and capacity without auxiliary heating or cooling.

High-Rate Capability in Miniature Format
Supporting continuous charge and discharge at 20C rates (60mA maximum), this micro-cell enables ultra-fast energy transfer and rapid system readiness. Its robust construction and low internal resistance ensure efficient power delivery even under aggressive cycling conditions.

Inherent Safety for Mission-Critical Applications
LTO chemistry provides the gold standard in lithium battery safety, with extremely low risk of thermal runaway, rupture, or ignition—even under mechanical abuse or electrical fault conditions. This makes the HC04120 ideal for medical implants, aerospace electronics, and unattended remote installations where failure is not an option.

Ultra-Compact Design for Space-Constrained Systems
With miniature dimensions of just 4mm diameter × 12mm length, this cell fits into the tightest design envelopes. Its consistent performance profile and stable voltage plateau ensure reliable power delivery throughout its decades-long service life.

Ideal Applications

• Implantable medical devices and diagnostic sensors

• Aerospace telemetry and flight-critical systems

• Downhole drilling instrumentation

• Industrial IoT and wireless sensor networks

• High-temperature automotive and engine compartment sensors

• Backup power for mission-critical memory circuits

• Remote environmental and wildlife monitoring

• Specialized scientific and research equipment

Technical Specifications

• Electrical: 3mAh, 2.4V, ≤1000mΩ internal resistance

• Cycle Life: >20,000 cycles @ 25℃, 1C/1C, 100% DOD

• Charge: CC-CV, 2.8V max, 3mA standard, 60mA (20C) max continuous

• Discharge: 1.8V cut-off, 3mA standard, 60mA (20C) max continuous

• Temperature: Operating -40℃ to 100℃, Storage -20℃ to 70℃

Customization & Engineering Support
We offer tailored solutions including capacity matching, custom terminations, voltage configurations, and packaging options (individual cells, assembled packs with protection, or custom enclosures). Our engineering team provides comprehensive integration support from concept through volume production, ensuring optimal performance in your specific application.