Custom High-Temperature Battery Packs
OEM battery pack solutions using high-temperature Li-ion cells, engineered for automotive and industrial applications.
Up to +85°C Discharge Custom PCM/BMS 14500 / 18650 / 21700 / 32140
Custom High Temperature Battery Pack Solutions
UltraXel provides custom high-temperature lithium-ion battery packs for automotive, industrial and outdoor electronic applications exposed to elevated temperatures.
Built with UltraXel high temperature 14500, 18650, 21700 and 32140 cylindrical cells, our battery packs can be customized to meet specific voltage, capacity, size and protection requirements.
Selected cells support discharge up to +85°C, with high-temperature aging data to support reliable battery pack design and cell selection.
High-Temperature Battery Pack Applications
Automotive Electronics
Compact high temperatue backup battery packs for eCall, T-Box and telematics systems exposed to prolonged vehicle heat.
Industrial IoT & Monitoring
Custom high-temp battery packs for industrial sensors, data loggers and connected devices operating in high-temperature environments.
Outdoor Security & Electronics
High-temperature battery packs for outdoor monitoring and electronic equipment exposed to solar heating and enclosed installation conditions.
Why Conventional Li-ion Batteries Struggle Above 60°C
Prolonged heat exposure can accelerate battery aging and affect performance, particularly when operating temperatures exceed the cell’s specified limits.
Accelerated Capacity Degradation
Elevated temperatures can accelerate cell aging, reducing available capacity and long-term backup runtime.
Charging & Thermal Limitations
High ambient temperatures and internal heat generation may exceed specified charging and component temperature limits.
Pack-Level Reliability Challenges
Protection circuits, wiring, connectors and pack materials must also withstand prolonged exposure to high temperatures.
How UltraXel Addresses High-Temperature Battery Pack Challenges
Wide-temperature lithium cells and custom battery pack solutions for weather stations, data loggers, telemetry units and remote environmental sensors.
01
High-Temperature Cell Selection
Select suitable high temperature 14500, 18650, 21700 or 32140 cells based on temperature, capacity, current and aging requirements.
Key Benefit: Cell selection backed by reliability test data.
02
Temperature Monitoring & PCM/BMS Protection
Integrate NTC sensing, charging controls and custom electrical protection to meet pack safety requirements.
Key Benefit: Enhanced temperature management and electrical safety.
03
High-Temperature Pack Integration & Validation
Customize cell arrangements, insulation, wiring and connectors, with testing under application-specific conditions.
Key Benefit: Reliable pack integration and validated performance.
Custom High-Temperature Battery Packs for Diverse Applications
Explore custom battery pack configurations developed for automotive electronics, IoT devices, security systems and solar-powered applications. From cell selection to pack integration, UltraXel supports application-specific voltage, capacity, protection and mechanical design requirements
T-Box Backup Battery Pack
HL18650T · 1S1P · 3.6V · 1950mAh Min.
Built with an HL18650T wide-temperature Li-ion cell, supporting −40°C to +85°C discharge and reliable performance after prolonged high-temperature exposure.
Key Benefit: High-temperature aging resistance, reliable backup power and custom protection with NTC, fuse and ultrasonic-welded housing.
eCall Backup Battery Pack
HL14500R · 1S1P · 3.6V · 750mAh
Built with an HL14500R wide-temperature Li-ion cell, supporting −40°C to +85°C discharge, with compact design, NTC sensing and fuse protection.
Key Benefit: Reliable emergency backup power, faster charging and higher capacity than the original 3S1P Ni-MH battery.
Dash Camera Battery Pack
HL18650T · 2S1P · 7.2V · 2000mAh
Built with HL18650T wide-temperature Li-ion cells, supporting −40°C to +85°C discharge, with dual IC protection, NTC sensing and fuse protection.
Key Benefit: Reliable power after high-temperature exposure, with cell balancing considerations and integrated electrical protection for automotive dash cameras.
Trailer GPS Tracker Battery Pack
HL18650V · 1S1P · 3.6V · 2900mAh
Built with an HL18650V wide-temperature Li-ion cell supporting −40°C to +85°C discharge, with NTC sensing, PTC protection and a custom connector.
Key Benefit: Long standby power and low-temperature reliability for trailer tracking, with protection designed for vehicle shock and vibration.
Smart Agriculture Gateway Battery Pack
HL18650V · 1S2P · 3.6V · 5800mAh
Built with HL18650V wide-temperature Li-ion cells supporting −40°C to +85°C discharge, with a compact design for agricultural monitoring and irrigation gateways.
Key Benefit: Long-term power reliability, extended runtime and reduced maintenance for remote agricultural IoT devices.
Industrial IoT Device Battery Pack
HL18650V · 2S1P · 7.2V · 2900mAh
Built with HL18650V wide-temperature Li-ion cells supporting −40°C to +85°C discharge, with custom PCM/BMS protection and connectors.
Key Benefit: Reliable wide-temperature power, stable voltage supply and flexible integration for industrial IoT devices.
Parking Camera Battery Pack
HL18650V · 1S1P · 3.6V · 2900mAh
Built with HL18650V wide-temperature Li-ion cells supporting −40°C to +85°C discharge, with a compact custom pack design for parking surveillance cameras.
Key Benefit: Extended standby capability, low self-discharge and reliable backup power after high-temperature exposure.
Body Worn Camera Battery Pack
HL18650Y · 1S2P · 3.6V · 6400mAh
Built with HL18650Y wide-temperature Li-ion cells supporting −40°C to +85°C discharge, with a compact, removable pack design for 4G-enabled body-worn cameras.
Key Benefit: Extended recording runtime, reliable low-temperature power and easy battery replacement for professional security applications.
Wire-Free Outdoor Security Camera Battery Pack
HL18650F · 1S4P · 3.6V · 11600mAh
Built with HL18650F wide-temperature Li-ion cells supporting −40°C to +85°C discharge, with high-capacity storage and a removable pack design for outdoor security cameras.
Key Benefit: Extended surveillance runtime, high-current discharge capability and low-temperature charging support for outdoor installations.
Solar Data Logger & Gateway Battery Pack
HL18650Y · 1S7P · 3.6V · 22400mAh
Built with HL18650Y wide-temperature Li-ion cells supporting −40°C to +85°C discharge, delivering extended runtime for solar-powered data logging and remote monitoring.
Key Benefit: High-capacity energy storage, reliable low-temperature performance and reduced maintenance for remote installations.
Off-Grid Internet Power Battery Pack
HL18650Y · 3S12P · 10.8V · 41600mAh
Built with HL18650Y wide-temperature Li-ion cells supporting −40°C to +85°C discharge, providing high-capacity energy storage for solar-powered remote communication systems.
Key Benefit: Extended runtime, reliable wide-temperature power and reduced maintenance for off-grid installations.
Solar Street Light Battery Pack
HL32140L · 8S4P · 25.6V · 60Ah
Built with HL32140L wide-temperature LiFePO₄ cells supporting −40°C to +85°C discharge, with a custom IP67-rated pack design for outdoor solar lighting.
Key Benefit: High-capacity energy storage, low-temperature charging capability and weather-resistant integration for reliable solar street lighting.
High-Temperature Battery Cell
Uitraxel manufactures wide-temperature Li-ion cells in 14500, 18650, 21700 and 32140 sizes to support custom battery pack designs.
• Operating Temp.: -40℃~+85℃
• Key Feature: Low-temperature performance
• Typical Capacity(0.2C): 2900mAh
• Max charge/discharge: 1.4A / 10A
• Operating Temp.: -40℃~+85℃
• Key Feature: Compact long-life LFP platform
• Typical Capacity(0.2C): 500mAh
• Max charge/discharge: 0.48A/2.40A
• Operating Temp.: -40℃~+85℃
• Key Feature: Compact high-capacity design
• Typical Capacity(0.2C): 750mAh
• Max charge/discharge: 0.7A / 3.5A
• Operating Temp.: -40℃~+85℃
• Key Feature: High-temperature standby reliability
• Typical Capacity(0.2C): 2000mAh
• Max charge/discharge: 1.95A / 10A
• Operating Temp.: -40℃~+85℃
• Key Feature: 1500+ cycle life / safer LFP chemistry
• Typical Capacity(0.2C): 1600mAh
• Max charge/discharge: 1.6A / 7.5A
• Operating Temp.: -40℃~+85℃
• Key Feature: Long runtime / high capacity
• Typical Capacity(0.2C): 3200mAh
• Max charge/discharge: 3.2A / 10A
• Operating Temp.: -40℃~+85℃
• Key Feature: 30A High-rate Discharge Cell
• Typical Capacity(0.2C): 3000mAh
• Max charge/discharge: 3A / 30A
HL18650T High-Temperature Reliability Testing
HL18650T demonstrates high-temperature aging resistance, post-aging cold discharge capability and wide-temperature performance for demanding automotive and industrial battery pack applications.
01. High-Temperature Aging Performance
Test Conditions: 80°C · 4.05V · 1,120 Hours
Test Result: ≥90% capacity recovery after 1,120 hours of aging at 80°C.
Application Value: Helps maintain available backup energy after prolonged heat exposure.
02. Post-Aging Cold Discharge Performance
Test Conditions: −30°C · 6W · After 80°C Aging
Test Result: Approximately 17 minutes of 6W discharge at −30°C after 1,120 hours of high-temperature aging.
Application Value: Evaluates cold-weather backup runtime after long-term thermal exposure.
03. Wide-Temperature Discharge Performance
Test Conditions: −40°C to +85°C · 0.2C Discharge
Test Result: Discharge curves demonstrate usable capacity across eight temperature conditions, from −40°C to +85°C.
Application Value: Supports battery selection for devices exposed to extreme operating temperatures.
Custom Battery Pack Engineering
UltraXel provides custom battery pack engineering, from cell configuration and protection design to mechanical integration and application-specific validation.
Why Choose UltraXel?
From in-house cell manufacturing to custom pack engineering, testing and certification, UltraXel delivers reliable high-temperature battery solutions for demanding applications.
In-House Cell Manufacturing
We develop and manufacture 14500, 18650, 21700 and 32140 cylindrical Li-ion cells, supporting battery pack design with multiple cell platforms.
High-Temperature Reliability Data
Selected cells are supported by high-temperature aging and discharge test data for engineering evaluation.
Custom OEM Pack Engineering
Support for cell configuration, PCM/BMS protection, temperature monitoring, wiring and mechanical integration.
Quality & Certification Support
Manufacturing quality systems include ISO 9001 and IATF 16949, with applicable UN38.3 transport documentation and project-specific certification support.
Project Support
We support backup battery and battery pack projects for automotive, tracking, industrial and outdoor applications.
Datasheet & Sample Support
Custom Battery Pack Development
Connector & Wiring Options
Typical information to share: application, voltage, capacity, temperature range and annual quantity.
Frequently Asked Questions
What is a high-temperature battery pack?
A high-temperature battery pack is an assembly designed for devices operating in elevated-temperature environments. Its suitability depends on the cells, protection components, charging controls and mechanical design.
Can lithium-ion battery packs operate at 85°C?
Selected UltraXel cells support discharge up to +85°C under specified conditions. The maximum operating temperature of a complete pack depends on its components and design, and requires pack-level validation.
Which battery cell sizes are available?
UltraXel offers high temperature 14500, 18650, 21700 and 32140 cylindrical cell platforms. Available chemistries and temperature specifications vary by model.
Can a high-temperature battery pack be charged at 85°C?
Discharge and charging temperature limits are different. Charging must remain within the selected cell’s specified temperature range, with appropriate monitoring and controls.
Can UltraXel customize battery pack voltage, capacity and connectors?
Yes. Customization options include series/parallel configurations, electrical protection, temperature sensing, wiring harnesses, connectors and mechanical packaging.
How is battery reliability evaluated after prolonged heat exposure?
Selected cells undergo high-temperature aging and discharge testing. Final pack designs can also be evaluated under application-specific temperature, current and runtime requirements.
What information is required for a custom battery pack quotation?
Please provide the application, required voltage, capacity or backup runtime, peak current, operating and charging temperatures, available dimensions, connector requirements and estimated order volume.