Role Summary

Responsible 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 & Validation

Develop and execute test plans for: Battery packs (Li-ion, LFP, etc.)BMS (Battery Management System)PCS (Power Conversion System)Complete BESS containers

Perform electrical, thermal, functional, and safety testing

Conduct FAT (Factory Acceptance Test) and SAT (Site Acceptance Test)2.

System Integration Testing

Validate interfaces between battery, BMS, PCS, EMS, and SCADATest communication protocols (CAN, Modbus, Ethernet)Perform charge-discharge cycle testing and efficiency validation3.

Compliance & Standards

Ensure testing as per standards like:IEC / UL / BIS relevant to BESSSupport certification processes and documentation4.

Data Analysis & Reporting

Analyze test data and identify performance gaps





Prepare detailed test reports and failure analysis

Suggest corrective actions and design improvements5.

Troubleshooting & Root Cause Analysis

Diagnose issues in battery systems, wiring, control logic

Work closely with design, quality, and production teams6.

Test Infrastructure Setup

Define and set up test benches, load banks, cyclers

Support automation of testing where / B.

Tech / Diploma in Electrical / Electronics / Mechatronics3–8 years experience in BESS, EV, battery, or power electronics testing

Required Skills

Robust understanding of: Lithium-ion batteries & BMSPower electronics & inverters

Hands-on with: Battery cyclers, HV testing equipment

Data acquisition systems

Knowledge of:CAN tools, Modbus tools

Safety practices for high voltage systems

📌 Test Engineer - BESS (India)
🏢 Larsen and Toubro
📍 India