iso-BTC+

Isothermal battery performance testing — larger cell formats

Advanced isothermal calorimetry for larger cells and higher capacities — with higher sensitivity, advanced thermal mapping and up to 200 W measurable power, for research and quality control alike. Every system is fully customisable to your requirements.

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Isothermal

Calorimetry

−20 to 90 °C

Temperature range

350 × 350 mm

Test chamber

200 W

Measurable power

Cylindrical – pouch

Cell formats

Advanced

Thermal mapping

Why choose the iso-BTC+?

Test larger formats

Isothermal calorimetry for larger cell formats and higher capacities.

Higher sensitivity

Detects subtle thermal changes with higher sensitivity than standard isothermal testing.

Map the heat

Advanced thermal mapping reveals hot spots for targeted thermal management.

Research & QC ready

Suitable for research and quality control, with multipoint sample-temperature measurement.

What you can measure

Heat release profilesBattery efficiencyCharge-capacity validationDischarge-capacity consistencyHeat at various C-ratesCycle-life performanceAdvanced thermal mappingHot-spot detection

Key specifications

Measurement type	Isothermal calorimetry
Temperature range	−20 to 90 °C
Test chamber	350 × 350 mm (W × D)
Maximum measurable power	200 W (2 × 100 W zones)
Cell & sample sizes	Cylindrical, prismatic & pouch cells
Data acquisition	Up to 10 Hz
Instrument size (W×D×H)	1200 × 900 × 1980 mm

Software

The iso-BTC+ runs on H.E.L’s WinISO software — a fully configurable workspace with multi-step recipes, real-time data display, automated safety monitoring and rapid data capture, so you can adapt experiments on the fly and export results for analysis.

Full specifications are in the specification book and brochure.

Frequently asked questions

What is the iso-BTC+ used for?

Advanced isothermal calorimetry for battery performance testing of larger cell formats and higher capacities.

How is it different from the iso-BTC?

It extends capability to larger cells, with higher sensitivity for subtle thermal changes, up to 200 W measurable power (2 × 100 W zones) and advanced thermal mapping.

What cells can it test?

Cylindrical, prismatic and pouch cells, with a 350 × 350 mm chamber and adaptor selection.

What can it measure?

Heat release, battery efficiency, and charge/discharge capacity, plus heat evolution at various C-rates and temperatures.

Does it support thermal mapping?

Yes — advanced thermal mapping and hot-spot detection for targeted thermal management.

Is it customisable to my testing needs?

Yes. Options include integrated charge cycling, heat-capacity evaluation, thermal mapping and custom battery adaptors. Customisation is central to H.E.L’s approach.