nlba battery analyzer

Analyses battery test data to estimate capacity, state of health, and internal resistance for cells and packs, helping engineers compare performance.

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About This Tool

The NLBA Battery Analyzer ingests test data from discharge tests, impedance spectroscopy, or pulse tests to compute key battery metrics. It provides capacity estimates, SoH, and internal resistance at both cell and pack levels, enabling rapid benchmarking and failure isolation. The tool supports per-cell analysis for modules and multi-cell packs, helping teams identify weak units.
Data ingestion supports CSV or JSON formats with time-series voltage, current, and optional temperature. Default workflows perform coulomb counting for capacity, SoH calculation against rated capacity, and impedance-derived resistance when voltage response to current steps is available. Output can be exported as structured reports or data files for further analytics.
Beneficiaries include R&D battery researchers, manufacturing QC staff, and field technicians who require reproducible, auditable metrics and per-cell visibility to guide design choices and QA decisions. The solution is designed for cross-chemistry applicability, from lead-acid to lithium-ion, and integrates with standard testing workflows.
Core value lies in transparent, repeatable calculations, robust handling of data quality issues, and clear per-cell versus pack-level insights that accelerate qualification, aging studies, and performance comparisons.

How to Use

  1. Provide inputs by uploading a data file (CSV/JSON) with voltage and current time-series and optional temperature.
  2. Configure test settings including chemistry, rated_capacity, and cutoff_voltage.
  3. Run calculations to obtain capacity, SoH, and internal resistance.
  4. Review per-cell metrics and identify outliers or weak units.
  5. Export results to CSV/JSON or generate a summary report for records.
  6. Refer to flagged cells to guide further testing or replacement decisions.
How to use nlba battery analyzer

Frequently Asked Questions

Find Quick Answers

What data formats are supported?
The tool accepts CSV and JSON data formats containing time stamps, voltage, current, and optional temperature series. Data alignment and unit consistency are required for reliable results.
Which chemistries are supported?
The analyzer is chemistry-agnostic for core calculations and supports common chemistries such as lead-acid and lithium-ion. Users can specify rated capacity and cutoff voltages appropriate to the chemistry.
How is capacity calculated?
Capacity is estimated by Coulomb counting: integrating current over time until the specified cutoff voltage is reached. The result is reported in ampere-hours (Ah).
How is state of health defined?
SoH is computed as the ratio of measured capacity to rated capacity, expressed as a percentage. It reflects remaining usable capacity under test conditions.

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