About the role#
This is a full-time, paid internship for the Fall 2027 term. You will support the development and manufacturing of advanced lithium-ion battery systems, working alongside engineering, quality, and manufacturing teams to improve product performance, reliability, and scalability.
What you'll do#
- Support the design, validation, and release of lithium-ion battery modules and pack components.
- Conduct performance and validation testing, as well as failure analysis of battery cells and systems.
- Analyze test data using Excel, MATLAB, or Python to identify trends and recommend improvements.
- Collaborate with manufacturing engineering to resolve production issues and implement process improvements.
- Create and maintain engineering documentation including bills of materials (BOMs), drawings, test plans, and reports.
- Participate in root cause analysis (RCA), corrective action initiatives, and prototype builds.
- Assist in DFMEA, PFMEA, and design reviews while ensuring compliance with safety and regulatory standards.
What you'll need#
- Currently pursuing a Bachelor’s or Master’s degree in Mechanical Engineering, Electrical Engineering, or a related field.
- Strong analytical and problem-solving skills.
- Basic understanding of lithium-ion battery fundamentals, including electrochemistry, thermal management, and BMS concepts.
- Proficiency in Microsoft Excel and strong written and verbal communication skills.
- Experience with data analysis tools like MATLAB or Python is preferred.
- Familiarity with CAD software such as SolidWorks or NX is a plus.
Location & details#
- Location: Ann Arbor, Michigan.
- Modality: On-site.
- Term: Fall 2027.
- Sponsorship: Not provided.
How to get in at East Penn Manufacturing Co.
Intern Insider's per-company playbook.
Securing an internship at East Penn Manufacturing Co. requires staying ahead of the competition. Because early applicants are often reviewed before the candidate pool becomes unmanageable, using Intern Insider helps by sending an instant alert the moment a role is published. This allows you to submit your materials among the first candidates.
Once you have identified an open position, you should try to connect with the people managing the hiring process. Intern Insider surfaces the recruiters behind the company's roles, which allows you to reach out directly. Asking a specific question about the role or inquiring about a referral can materially improve your response rates compared to a standard application.



