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Larsen & Toubro

# Test Engineer - BESS

India>Tamil Nadu>Coimbatore Campus Operations 

Listed on Larsen & Toubro’s official careers site. Posted October 7, 2026. Check that it is still open and apply there.
[Apply on Larsen & Toubro’s careers site →](https://larsentoubrocareers.peoplestrong.com/job/detail/LNT_TE-B_1882314)

[OpenNash Jobs](https://jobs.opennash.com/) / [Larsen & Toubro](https://jobs.opennash.com/companies/larsen-toubro/) / Test Engineer - BESS

## Job description

Role SummaryResponsible for validation, testing, and commissioning of Battery Energy Storage Systems (BESS) at component, pack, and container level. Ensures system performance, safety, and compliance with applicable standards.Key Responsibilities1.

Testing & ValidationDevelop and execute test plans for: Battery packs (Li-ion, LFP, etc.)BMS (Battery Management System)PCS (Power Conversion System)Complete BESS containersPerform electrical, thermal, functional, and safety testingConduct FAT (Factory Acceptance Test) and SAT (Site Acceptance Test)2. System Integration TestingValidate interfaces between battery, BMS, PCS, EMS, and SCADATest communication protocols (CAN, Modbus, Ethernet)Perform charge-discharge cycle testing and efficiency validation3.

Compliance & StandardsEnsure testing as per standards like:IEC / UL / BIS relevant to BESSSupport certification processes and documentation4. Data Analysis & ReportingAnalyze test data and identify performance gapsPrepare detailed test reports and failure analysisSuggest corrective actions and design improvements5. Troubleshooting & Root Cause AnalysisDiagnose issues in battery systems, wiring, control logicWork closely with design, quality, and production teams6.

Test Infrastructure SetupDefine and set up test benches, load banks, cyclersSupport automation of testing where applicableQualificationsB.E / B.Tech / Diploma in Electrical / Electronics / Mechatronics3–8 years experience in BESS, EV, battery, or power electronics testingRequired SkillsStrong understanding of: Lithium-ion batteries & BMSPower electronics & invertersHands-on with: Battery cyclers, HV testing equipmentData acquisition systemsKnowledge of:CAN tools, Modbus toolsSafety practices for high voltage systems

## Qualifications

Bachelor of Engineering (BE); General Diploma

## At a glance
- Posted by the employer: Oct 7, 2026
- First seen by OpenNash: Oct 12, 2026
- Last checked: Oct 19, 2026
- Listed for: 12 days
- Location: India>Tamil Nadu>Coimbatore Campus[Apply on Larsen & Toubro’s careers site →](https://larsentoubrocareers.peoplestrong.com/job/detail/LNT_TE-B_1882314)

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