hei

HEI electric vehicle battery diagnostics

Physics-based intelligent battery diagnostics

EV battery diagnostics,
Beyond the charging session, faster

With no additional hardware and a fully software-based deployment, turn every routine EV charging session into a powerful battery diagnostic session.

True

plug-and-play deployment

100%
software-based

within 60 seconds

Actionable

500+ high-precision
data points

Beyond simple forecasts

physics-based diagnostics

and practical guidance

Intro

A new standard for EV diagnostics

HEI analyzes a vehicle's current condition together with its historical battery behavior and projected future performance. The result is a more accurate EV diagnostic service built for real-world operation.

No extra hardware

Higher accuracy

Past to future

Done in under a minute

hei

technology

A health checkup for batteries

HEI is built to measure a battery's state of health (SOH) and turn that signal into practical battery care insight.

We collect current and voltage data generated during charging and apply HEI's patented implementation of the generalized fluctuation-dissipation theory to parameterize changes in the battery's electrical and chemical behavior.

By tracking changes in those parameters over time for each vehicle, HEI can estimate battery SOH more accurately and detect warning signs of latent risk, including fire-related risk, earlier in the lifecycle.

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Registered vehicles

4,000+

Total mileage

10M+ km

Battery diagnoses

35K+

Our partners

STARCOFF logo
Jeju Electric Vehicle Service logo
CHAEVI logo
LS E-Link logo
Seoul Metro logo
EVAR logo
Green Initiative Ventures logo