Battery Application Engineer – LV Battery & ESS

Battery Application Engineer – LV Battery & ESSDepartment: R&D

Reports to:

R&D Manager

Location:

Ann Arbor

Employment Type:

Full-Time Travel: 25–35% domestic travel

About the Role We are seeking a hands-on and proactive Battery Application Engineer to support customer applications and serve as a technical bridge between our U.S. customer-facing teams and China-based R&D teams.

This position combines battery testing, system integration, technical troubleshooting, customer support, and product development. The ideal candidate will have a strong technical foundation in battery systems, practical problem-solving skills, and the ability to communicate complex technical information clearly to customers and cross-functional engineering teams.

The Battery Application Engineer will play an important role in supporting customer projects, resolving technical issues, validating products, evaluating competitive technologies, and providing application feedback to support product improvements.

Key Responsibilities Review customer specifications and application requirements, assess product suitability, and translate customer needs into clear technical requirements for internal R&D teams.

Develop and execute battery test plans based on customer and product requirements.

Analyze test data and prepare technical reports to support product validation and customer evaluations.

Troubleshoot battery and system-level issues, including charging behavior, discharge performance, BMS protection events, communication faults, and electrical interface compatibility.

Provide remote and on-site technical support for battery installation, commissioning, configuration, and system integration.

Manage customer technical support cases, document issues, track open items, and coordinate internal resources to drive timely resolution.

Support the preparation, delivery, installation, and evaluation of customer samples while communicating technical status and project timelines.

Conduct product demonstrations and technical training for customers, partners, and internal teams.

Participate in product definition, design reviews, testing, and validation activities, providing feedback from an application and customer perspective.

Conduct technical benchmarking and competitive product evaluations, including performance testing, teardown analysis, and specification comparisons.

Create and maintain technical documentation, including product specifications, application notes, installation guides, test reports, and troubleshooting guides.

Follow established electrical, battery, and workplace safety procedures during testing, handling, installation, and field support activities.

Travel to customer sites, company facilities, and other locations as required.

Required Qualifications Bachelor’s degree in Electrical Engineering, Mechanical Engineering, Materials Science, Automotive Engineering, or a related technical discipline.
3–5 years of relevant engineering experience in battery applications, testing, system integration, product development, or technical support.

Experience with lead-acid and/or lithium-ion battery systems, including battery performance, charging characteristics, and application requirements.

Strong hands-on experience with electrical testing, troubleshooting, and technical problem-solving.

Experience using test equipment such as:

Battery cyclers

Programmable power supplies

Electronic loads

Digital multimeters

Oscilloscopes

Data acquisition systems

Ability to read and interpret technical specifications, electrical schematics, wiring diagrams, and connector pinouts.

Ability to analyze technical data and communicate findings through clear reports and presentations.

Strong written and verbal communication skills in English.

Strong organizational skills with the ability to manage multiple customer issues and project priorities.

Ability to work independently while collaborating effectively with cross-functional teams, international engineering teams, and customers.

Willingness and ability to travel 25–35% domestically.

Health & Safety Qualifications The successful candidate must have a working knowledge of:

Electrical safety practices and battery handling procedures.

Workplace hazard identification and appropriate PPE requirements.

Emergency response procedures for electrical incidents, battery failures, and chemical exposure.

Lithium-ion battery hazards, including thermal runaway, overheating, and fire prevention, where applicable.

Safe practices for battery testing, charging, installation,…