Battery Cell Tester BCTer-Trinity Series

The Wattical Energon Tech BCTer (Battery Cell Tester with energy recovery) Trinity Series offers the ability to precisely analyze battery technologies such as lead-acid, Li-ion and their derivatives, as well as next-generation battery systems. Using advanced microprocessor-controlled controllers, the Trinity Series adapts to rapidly evolving battery testing needs, supporting nearly any test standard — also offering the flexibility to create your own standards.

With an AC/DC converter on the mains-side (AFE) and a DC/DC converter on the battery side, our cell tester ensures efficient, eco-friendly operation through regenerative hardware design. The bidirectional power conversion enables low-latency energy recuperation, significantly reducing operational costs and environmental impact.

As a specialized sub-series under BCTer, the Trinity Series enables precise simulation and measurement of the effects caused by sinusoidal ripple currents applied to battery cells, supporting standard and advanced tests for battery health assessment and degradation analysis.

Unique Trinity Series Features

Integrated Ripple Testing
Thanks to its highly integrated and adaptive controller and state of the art power unit, the Trinity Series can infeed sine wave ripple currents across a wide frequency range (10Hz to 5kHz) while maintaining high accuracy, regardless of charging or discharging test protocols. Our system is unique in that it integrates ripple infeed and regular charge/discharge in a single-channel unit. The ripple feature is embedded in the hardware itself, rather than being added in parallel to conventional test channels.
Synchronous EIS Measurement
We are proud to offer integrated electrochemical impedance spectroscopy (EIS) measurement as another unique feature. In addition to the standard charge/discharge and ripple functions, this EIS capability is uniquely integrated directly into the test channel unit—enabling real-time impedance analysis during cycling operations without interrupting the test sequence.
Fast Response & High Precision
With 1ms current response time (10% to 90% full scale) and ±0.02% full-scale accuracy, the Trinity Series delivers exceptional measurement precision for demanding battery research and quality control applications.

Testing and Integration Features

Cells can be tested in temperature-controlled climatic chambers, integrated into the battery test system
Measuring instruments with integrated data acquisition (Loggers) can be integrated
Wattical systems allow cloud-based data management and archiving
Integration into Manufacturing Execution System (MES), Laboratory Information Management System (LIMS), and ERP platforms is available
Built-in high-performance controller enables offline, self-sufficient operation without host computer dependency
External interface support: CAN FD, RS-485 (auxiliary channels, climate chambers, chillers, pressure sensors, etc.)

Performance and Measurement Capabilities

Charge/Discharge Testing
Voltage ranges: -8V to +8V, -10V to +10V, -20V to +20V, -60V to +60V (equipment terminal voltage)
Current ranges: ±300A / ±600A per channel (customizable ranges available)
Current accuracy: ±0.02% full scale at 25°C ±5°C (accuracy option)
Voltage accuracy: ±0.02% full scale at 25°C ±5°C (accuracy option)
Current response time: ≤1ms (10% to 90% full scale)
Current switching time: ≤2ms (-90% to 90% full scale)
Data record frequency: 333Hz (3ms), supports 1000Hz (1ms) in specific cases
Frequency range: 10Hz to 5kHz
Maximum ripple current (300A channel): 500A peak-to-peak (0.01–1kHz)
Maximum ripple current (600A channel): 1000A peak-to-peak (0.01–1kHz)
Ripple accuracy: ±1% full scale
Frequency accuracy: ±0.1% full scale (5kHz)
AC output current range: 10A peak-to-peak to 60A peak-to-peak
Frequency range (synchronous EIS): 1Hz to 5kHz
Frequency range (static testing): 0.01Hz to 5kHz
Impedance range: 0.01mΩ to 800mΩ
Impedance accuracy: ±0.1% to ±1% full scale (depending on range)
Bidirectional energy conversion
Power factor >0.99
Total harmonic distortion (THD) <5%
AC Mains-Power-Grid => AC/DC <=> DC/DC <= Battery

Test Modes Constant Current (CC), Constant Voltage (CV), Constant Current Constant Voltage (CCCV), Constant Power (CP), Constant Resistance (CR), Constant Current Pulse, Constant Current Ramp, Road Profile, Matrix, and more

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Naming Scheme

BCTer-<Series>-<Voltage>-<Current>-<NumberOfChannels>

Example:

BCTer-T-8-300-4

Trinity Series, -8V to +8V, 300A, 4 channels

Series

  • T = Trinity (Ripple + EIS capabilities)

Voltage

  • -8 to +8V
  • -10 to +10V
  • -20 to +20V
  • -60 to +60V

Optional Features

  • A = Accuracy (0.02% full scale)
  • F = Fast (1ms response time)

Applications

Automotive & E-Mobility
  • EV battery cell validation and certification testing
  • Ripple current tolerance testing for DC fast-charging scenarios
  • Battery aging and cycle life studies
  • DCIR and ACIR characterization
Energy Storage Systems
  • Grid-scale battery cell qualification
  • Second-life battery assessment (SOH sorting)
  • Temperature-dependent performance analysis
  • Safety testing (overcharge, thermal runaway detection)
Battery Research & Development
  • Next-generation battery chemistry validation
  • Lithium plating detection and analysis
  • Internal short circuit (ISC) warning systems
  • Dynamic EIS for real-world cycling conditions
Quality Control & Production
  • High-throughput cell sorting and grading
  • Formation cycling with energy recovery
  • End-of-line testing with ripple and EIS validation
  • Statistical process control integration

Technical Specification Overview

Parameter
Specification
Voltage Range
-60V to +60V (configurable)
Current Range
±300A / ±600A per channel
Accuracy (Optional)
±0.02% full scale
Response Time
≤1ms (10% to 90% FS)
Ripple Frequency
10Hz to 5kHz
Max Ripple Current
500A / 1000A peak-to-peak
EIS Frequency
0.01Hz to 5kHz
Data Rate
333Hz standard, 1000Hz capable
Communication
Ethernet, CAN FD, RS-485
Operating Temperature
0°C to 40°C
Protection Level
IP21

Why Choose BCTer Trinity Series?

All-in-One
Integration
Unlike conventional systems that require separate equipment for ripple testing and EIS measurements, the Trinity Series integrates all capabilities into a single channel unit—reducing complexity, footprint, and capital investment.
Real-World Testing Conditions
Synchronous EIS measurement during cycling operations provides insights into battery behavior under actual application conditions, not just static laboratory scenarios.
Sustainable
Operation
Bidirectional energy recovery reduces energy consumption and operational costs while supporting your laboratory's sustainability goals.
Future-Proof Technology
Microprocessor-controlled architecture and software-based flexibility ensure compatibility with emerging battery technologies and evolving test standards.

Technical Specification Sheets

Download Datasheet

Request a Quote or Technical Consultation

Interested in the BCTer Trinity Series for your laboratory or production facility? Our technical team is ready to discuss your specific testing requirements and recommend the optimal configuration.

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