High-Temperature 18650 Battery
Explore UltraXel HL18650T high-temperature 18650 battery with low self-discharge, float charge stability and reliable backup power for automotive, GPS and outdoor electronics.

| Capacity (0.2C) | 2000 mAh |
|---|---|
| Max chg / dis | 1.95 A / 10 A |
HL18650T-High Temperature 18650 Cell Specifications
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Why Choose HL18650T for Backup Power?
Wide-Temperature Operation
Reliable operation across −40°C to +85°C environments.
High-Temperature Reliability
Designed for long-term performance under elevated temperature conditions.
Long-Term Standby Stability
Provides reliable backup power for systems requiring extended standby operation.
Float Charge Stability
Stable performance under long-term continuous charging conditions.
5+ Years Long-Term Reliability
Designed for long-term deployment with stable performance in demanding environments.
Automotive-Grade Reliability
Manufactured under IATF16949 quality management standards for automotive applications.
HL18650T High Temperature Battery Performance
Wide Temperature Discharge Performance
Stable discharge performance from −40°C to +85°C for extreme-environment backup applications.
Capacity Recovery After 80°C High Temperature Aging
After 80°C aging, HL18650T recovers over 90% capacity, ensuring reliable high-temperature storage performance.
Low-Temperature Discharge Performance After 80°C Aging
After long-term 80°C aging, HL18650T maintains reliable 6W discharge performance at −30°C.
High-Temperature Cycle Performance at 60°C
HL18650T maintains approximately 84% capacity retention after 300 cycles at 60°C.
Room-Temperature Cycle Performance
HL18650T retains approximately 95% capacity after 500 room-temperature cycles.
Discharge Rate Capability
Stable voltage output across discharge rates from 0.2C to 5C.
HL18650T Applications for Extreme Environments
T-Box Battery
- Challenges
- High vehicle temperatures accelerate battery aging
- Long standby periods require reliable backup power
- Vibration and temperature fluctuations affect power stability
- Reliable operation from −40°C to +85°C
- >90% capacity recovery after 80°C aging
- Vibration-resistant performance for reliable T-Box communication
eCall Battery
- Extreme temperatures affect battery performance
- Vehicle heat accelerates battery aging
- Stable power after long-term standby
- −40°C to +85°C wide-temperature operation
- High-temperature aging resistance for long service life
GPS Tracking Battery
- Vehicle temperature changes affect battery performance
- Power interruption requires reliable backup recording
- Limited installation space requires compact battery design
- Stable backup power for continuous recording
- Wide-temperature operation from −40°C to +85°C
- Compact 18650 cell design for space-limited devices
Dash Cam Backup Battery
- Stable output under varied vehicle temperature environments
- Sufficient power for emergency recording after power cut-off
- Compact size to fit limited installation space
- Works stably from -40°C to +85°C
- High capacity ensures continuous emergency recording
- Miniature design adapts to narrow installation spaces
Outdoor Security Battery
- Outdoor exposure causes high temperature fluctuations
- 24/7 operation increases battery aging stress
- Remote installation makes maintenance difficult
- Reliable operation under harsh outdoor conditions
- High-temperature aging resistance for long-term reliability
- Stable power supply with reduced maintenance requirements
Roadside Monitoring Equipment Battery
- Outdoor exposure causes temperature fluctuations
- Remote deployment requires low maintenance
- Long-term monitoring needs reliable standby power
- Reliable standby power for continuous monitoring
Logistics & Container Tracking Backup Battery
- Transportation environments cause temperature variations
- Long-term tracking requires stable standby power
- Remote deployment makes battery replacement difficult
- 6W discharge capability at −30°C after aging
- Long-term reliability for continuous tracking
Custom High-Temperature Battery Packs
Cell Configuration
Custom voltage and capacity.
BMS / PCM Protection
Integrated safety protection.
NTC Monitoring
Accurate temperature sensing.
Connectors & Wiring
Custom cables and connectors.
Housing Design
Heat-resistant pack structures.
OEM Integration
Design, testing and integration.
Ni-MH Replacement for Automotive Backup
HL18650T enables higher voltage integration, fewer cells and reliable backup performance for demanding automotive applications.
Discuss Your Battery Project With UltraXel
Share your project requirements and get technical support, datasheets and customized solutions.
Why Choose HL18650T Over Ni-MH Batteries?
Advantages of 18650T Wide Temperature Battery
- Wide-temperature operation: Stable performance from -40°C to +85°C
- Automotive standby reliability: Designed for T-Box, eCall, and in-vehicle backup power
- Low self-discharge: Suitable for long standby and infrequent maintenance applications
- Higher energy density: Helps reduce battery pack size and improve runtime
High-temperature aging resistance: Built for hot cabin, outdoor enclosure, and harsh field environments
Cell + pack support: UltraXel provides wide-temperature cells and customized battery pack solutions
HL18650T Wide Temperature Battery Specifications
HL18650T is a heat-resistant 18650 lithium battery designed for high-temperature environments, delivering stable performance from -40°C to +85°C.
Send us your requirement
Tell us the operating temperature range, load profile and mechanical envelope. We will come back with a cell or pack recommendation and an indicative lead time.
