Reliable eCall Backup Battery Solutions
eCall Battery Challenges & Solutions
Key eCall Battery Challenges
Cold reduces available backup capacity, while prolonged heat accelerates battery aging.
Recommended Battery Cells for eCall Systems
- −40°C to +85°C discharge capability
- Over 90% capacity recovery after 80°C / 4.05V aging for 1120 hours
- Demonstrated 6W discharge at −30°C after aging
- Custom 1S1P and 2S1P pack options
- −40°C to +85°C discharge capability
- High-temperature aging evaluation at 85°C / 4.1V for 42 days
- Demonstrated 6W discharge at −20°C after aging
- Custom packs for compact modules and NiMH replacement projects*
Need a Cell or Custom Battery Pack?
We support cell selection and custom battery packs based on your runtime,
temperature,power and size requirements.
eCall Backup Battery Applications
Dedicated eCall Modules
T-Box with Integrated eCall
Aftermarket Emergency Call Devices
eCall Battery Packs
18650T Battery Pack for eCall
- Designed for high-temperature backup applications
- Matched to communication peaks and backup duration
- Optional PCM, NTC and custom connectors
14500R Battery Pack for eCall
- Dual-cell design for increased backup capacity
- Layout and wiring tailored to installation space
- Optional PCM, NTC and custom connectors
Compact 14500R Battery Pack for eCall
- Compact design for space-constrained eCall modules
- Matched to module voltage and backup requirements
- Optional PCM, NTC and custom connectors
From Cell Selection to Custom Battery Pack
Conventional Battery Vs UltraXel Wide Temperature Battery
| Feature | UltraXel Wide Temperature Battery | Conventional Battery |
| Cold Performance | Stable Output | Voltage Drop |
| High Temperature Stability | Long Lifespan | Faster Aging |
| Self-Discharge | Low | High |
| Communication Stability | Reliable | Moderate |
| Design Life | 5+ Years in Extreme Environments | 3–5 Years at Room Temperature |
| Temperature Range | -40°C~+85°C | -20°C~+60°C |
Applications of eCall Batteries
eCall System
Emergency call activation after vehicle collision.
T-Box Battery
Telematics communication and vehicle connectivity.
TCU Battery
Vehicle data transmission and diagnostics.
Connected Vehicle
Cloud-connected automotive platforms.
Automotive IoT
Vehicle monitoring and smart mobility systems.
Emergency Call
Critical backup power during power failure.
Ready to Upgrade Your eCall Power Solution?
How eCall Systems Work
eCall systems automatically contact emergency services after a serious vehicle accident.
When the main vehicle battery fails, the backup eCall battery ensures continuous GPS positioning, cellular communication, and emergency data transmission — helping improve response time and vehicle safety in critical situations.
ACCIDENT OCCURS
Sensors in the vehicle detect a serious accident.
eCALL ACTIVATED
The eCall system is automatically triggered.
DATA TRANSMISSION
The system sends essential vehicle and location data via cellular network.
RESCUE DISPATCHED
Emergency services are dispatched to the accident location.
eCall System in Vehicle
Crash Sensors
Detect impact and trigger emergency response
eCall Control Unit (TCU)
Manages emergency call processing
GNSS + Cellular Module
Provides location and cellular connectivity
Backup Battery (eCall Battery)
UltraXel wide-temperature backup power
Why Backup Battery Is Critical
Ensures operation when the main vehicle battery fails
Backup Power
Provides power for emergency calls and data transmission when main power is lost.
Extreme Temperature
Works in extreme temperatures from -40°C to +85°C.
Reliable Communication
Supports reliable communication and saves lives.
Continuous Operation
Ensures GPS positioning, cellular communication and emergency data transmission.
Why Choose UltraXel？
Deployed in 20 Million Vehicles
Proven automotive application experience.
IATF 16949-Certified Manufacturing
Consistent quality with batch traceability.
Wide-Temperature Performance
−40°C to +85°C discharge with high-temperature validation.
Post-Aging Backup Performance
Low-temperature discharge validated after prolonged heat exposure.
Custom eCall Battery Solutions
Battery Cell Selection
NCM and LFP cells matched to your power, temperature, and space requirements.
Custom Battery Pack Design
Custom configurations, protection, NTC, enclosures, and connectors.
Testing & Production Support
Temperature and aging tests, samples, documentation, and manufacturing.
FAQ
What is an eCall battery?
What battery options does UltraXel offer for eCall systems?
Can eCall batteries operate from −40°C to +85°C?
Can UltraXel eCall batteries support 5+ years of service life?
Can lithium-ion replace a NiMH eCall battery?
What information is needed for a custom eCall battery pack?
Custom Automotive Battery Solutions
Tailored Battery Design
Custom eCall, T-Box, and telematics battery solutions for different automotive applications.
Wide-Temperature Reliability
Stable battery performance from -40°C to +85°C for harsh vehicle environments.
Engineering & Integration Support
Support for PCM/BMS, NTC protection, connector customization, and automotive system integration.
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