Wide Temp. T-box Battery
T-Box Power Supply Challenges

Insufficient capacity and voltage for upgraded telematics

High temperatures accelerate capacity fade and increase short-circuit risks.

Low temperatures hinder ion transport, increase polarization, and cause lithium plating and capacity fade.

Lifetime testing takes long and relies on high-temperature aging to simulate years of use.

Standard solutions may not meet automotive-grade certification requirements.
UltraXel Wide-Temperature TCU Automotive Power Solution
- Wide-temperature performance – stable operation from -40°C to 85°C for extreme environments;
- High reliability and endurance – fully compliant with automotive-grade durability and thermal shock standards;
- Sustained power supply – ensures the T-Box continues functioning even during main power interruptions;
- Flexible customization – offering both high-performance cells and custom battery pack solutions to meet diverse T-Box system requirements.
Custom T-Box Battery Solutions High-Performance Battery Packs
Technical Advantages — Proven UltraXel Reliability

-40°C to +85°C
Ultra-wide operating temperature, designed for extreme automotive environments.

5 Years
Proven reliability after five years of outdoor storage in extreme conditions.

-30°C High-rate Discharge
Maintains high-power discharge at -30°C even after prolonged high-temperature storage.

Low Capacity Loss
Less than 20% capacity loss after two years of 60°C extreme storage.

15 Million Shipments
Installed in over 15 million vehicles globally, proving large-scale reliability.

IATF 16949 Certified
Strict adherence to IATF16949 automotive quality standards from development to delivery.
Applications of UltraXel T-Box Power Solutions

New Energy Vehicles
In new energy vehicles, the T-Box Power Supply plays a critical role in maintaining stable communication between the vehicle and cloud platforms. UltraXel’s Auto Grade Wide Temperature Battery ensures continuous power for telematics modules, GPS positioning, and over-the-air (OTA) communication, even under extreme temperature conditions (-40°C to +85°C). This enables real-time data transmission, battery monitoring, and vehicle diagnostics without interruption — essential for electric and hybrid vehicle safety and performance.

Commercial Fleet Management
For commercial fleets, uninterrupted data connectivity is vital for tracking, maintenance scheduling, and operational safety. UltraXel’s Auto Grade Battery provides a reliable backup power source for fleet telematics units, ensuring stable operation of T-Boxes during main power interruptions or extreme weather. The high energy density and extended cycle life of UltraXel T-Box Power Supply modules make them ideal for heavy-duty logistics vehicles, trucks, and public transportation systems.

Intelligent Connected Vehicles
In intelligent connected vehicles, T-Box systems serve as the bridge between the car, the driver, and the cloud. UltraXel Auto Grade Wide Temperature Battery guarantees that T-Box communication, emergency calling, and remote diagnostics remain active even under harsh conditions. Its automotive-grade reliability and thermal endurance enable OEMs to comply with global telematics and safety regulations while improving user experience through always-on connectivity.

T-Box OTA / E-call / GPS Tracking Backup Power
When main power is cut off — during an accident, system maintenance, or diagnostic mode — the UltraXel T-Box Power Supply ensures continuous backup power for OTA updates, E-call emergency systems, and GPS tracking modules. The Auto Grade Battery maintains data transmission for 15–30 minutes, meeting international telematics regulations and preventing data loss or communication downtime. Its ultra-wide temperature tolerance (-40°C to +85°C) ensures reliability across all vehicle environments.

Remote Tracking Telematics Units
Remote tracking telematics units are key to smart vehicle monitoring and logistics management, continuously transmitting real-time data such as location, route, and operational status. UltraXel's Auto Grade Wide Temperature Battery provides stable backup power for the T-Box, ensuring uninterrupted communication even if the vehicle's main power fails. Operating reliably from -40°C to +85°C, it offers long-term performance, excellent cycle life, and high discharge capability, helping fleet operators, telematics providers, and OEMs maintain data integrity, driver safety, and compliance with international standards.
Customize T-box Battery Project
What We Offer

Battery Cell Selection
14500, 18650, 21700 and 32140 options.

Custom Battery Packs
Custom voltage, capacity, BMS and connectors.

Application Matching
Solutions matched to load, temperature and space.