Role Summary:

Own the complete electrical architecture of lithium-ion battery packs for electric two-wheelers cell configuration, BMS selection and integration, power and signal distribution, protection and safety delivering packs that meet performance, safety, reliability and regulatory targets. Works as a peer specialist alongside the Mechanical Architect and the Powertrain Integration Engineer.

Key Responsibilities:

- Electrical Architecture: Define pack electrical architecture series/parallel cell configuration, voltage/capacity sizing, busbar and interconnect design, current paths, contactor/fuse/pre-charge topology.

- BMS Selection &
- Integration:

Specify, evaluate and integrate the BMS cell monitoring, balancing strategy, SOC/SOH algorithm alignment, protection thresholds, communication (CAN/UART/RS485) and functional safety behaviour.

- Cell Characterisation: Lead cell evaluation and benchmarking capacity, IR, cycle life, thermal behaviour and define acceptance criteria for incoming cells.

- Protection &

- Safety:

Design short-circuit, over-current, over/under-voltage and over-temperature protection; define fusing strategy, isolation, creepage/clearance and HV safety compliance.

- Wiring &

- Interconnects:

Design cell-tap harnesses, sense lines, thermistor placement, busbars and connector selection (including fast-charge interfaces); manage voltage drop, EMI/EMC and reliability.

- Charger &

- Vehicle Interface:

Define charging protocol and interlocks with charger and vehicle ECU/display in collaboration with the Integration Engineer; support CAN matrix definition and diagnostics.

- Validation &

- Homologation:





Define and execute the electrical DVP charge/discharge performance, protection verification, environmental and abuse testing per AIS-156; support ARAI/ICAT certification.

- Supplier Interface: Evaluate cell, BMS and electrical component suppliers (India/China) technically; support the sourcing team in techno-commercial decisions.

Qualifications &

- Experience:

- B.E./B.Tech in Electrical / Electronics Engineering.

- 5+ years in battery pack electrical design, BMS integration or battery systems engineering; at least 2 packs taken to production, preferably EV 2W/3W.

- Strong knowledge of lithium-ion cell chemistries (NMC/LFP), their electrical behaviour and safety characteristics.

- Hands-on experience with BMS platforms (off-the-shelf and custom), CAN tools (CANalyzer/PCAN), and lab equipment (cyclers, DAQ, oscilloscopes).

- Working knowledge of AIS-156
- ISO 26262 awareness and EMC basics.

- Experience evaluating and working with Chinese cell/BMS suppliers is an advantage.

Skills &

- Competencies:

- Circuit design and schematic capture; busbar sizing and thermal-electrical trade-offs.

- DFMEA, DVP&R;, root-cause analysis (8D) and engineering change management.

- Data-driven approach to cell testing and field failure analysis.

- Explicit documentation and supplier-facing technical communication.

Key Performance Indicators:

- Pack electrical performance vs. spec (range, charge time, efficiency).

- Protection and safety validation first-pass rate.

- Field reliability electrical/BMS-related failure PPM.

- AIS-156 certification without major design iterations.

📌 Battery Designer - Electrical Architect (Pune)
🏢 EMOTORAD
📍 Pune