Battery Test Engineer

Do you have a passion for sustainable energy? Are you entrepreneurial, eager to have an impact, and in search of a worthy problem to solve? As Battery Test Engineer at RePurpose Energy, you will collaborate with a team of best-in-class engineers to accelerate the clean energy transition.


About RePurpose Energy

The mission of RePurpose Energy is to give electric vehicle batteries a “second life” in lower-cost, more sustainable energy storage systems for the renewable energy industry. Since its founding in 2018, the company has won several competitions, grants, investments, and accolades. These milestones and the team’s proprietary processes for testing, reassembling, and operating used batteries in large-scale energy storage systems have positioned RePurpose Energy as the clear leader in a rapidly growing market with vast potential. 


Job Description

The Battery Test Engineer will collaborate with a small team of engineers to perform various types of lithium-ion battery inspection, disassembly, testing, analysis, and reassembly. The ideal candidate is a detail-oriented and motivated problem-solver with strong written communication skills. Furthermore, the candidate must be able to prioritize and execute tasks effectively and independently in a fast-paced, startup environment. These capabilities will enable the Battery Test Engineer to successfully design, plan, execute, and document battery tests with autonomy.


Job Functions:

  • Disassemble, test, and reassemble lithium-ion battery packs

  • Evaluate packs and cells for damage; assess technical specifications; document findings

  • Support development of battery test plans and advancement of battery test methodologies

  • Set up and perform battery cell tests

  • Record, process, analyze, and report on cell test data

  • Ensure ongoing compliance with health and safety standards

  • Efficiently and effectively document test results and methodologies


Required Experience & Characteristics:

  • Master’s or Ph.D. degree in engineering (e.g. chemical, electrical, mechanical, materials science, etc.) or other technical discipline is preferred. Alternatively, a bachelor’s degree in the same fields and 2+ years of professional or academic research experience with lithium ion batteries are also sufficient.

  • Deep understanding of lithium ion battery operation, characterization, and degradation

  • Familiarity with at least one of the following: electrochemical impedance spectroscopy (EIS), hybrid pulse power characterization (HPPC), ultrasonic battery testing, other techniques for detailed characterization of battery health, accelerated battery aging, battery failure analysis

  • Ability and willingness to switch frequently between desk work (e.g. coding, documenting, and analyzing data) and hands-on work in a machine-shop environment (e.g. battery disassembly, testing, and reassembly)

  • Strong written communication skills

  • Ability and willingness to work with high-voltage battery packs while adhering to safety procedures


Desired Experience & Characteristics:

  • 2+ years of experience with operation of battery test equipment (e.g. Arbin, Chroma, Bitrode, etc.) for cell characterization

  • Familiarity with neural network design and training

  • Familiarity with battery management system (BMS) programming and/or installation

  • Familiarity with design and/or manufacturing of battery packs and/or energy storage systems

  • Familiarity with CANbus communications protocols

  • Proficiency with Matlab, Python, C, Solidworks, and/or Fusion 360

  • Up-to-date understanding of safety codes and standards for used battery testing (e.g. UL #1974) and energy storage systems (e.g. UL #1973 and #9540)

Disclaimer: While performing job functions, the employee is regularly required to stand, walk, bend, talk, hear, and concentrate intensely for extended periods. The employee must frequently lift and/or move up to 25 pounds and occasionally lift and/or move up to 50 pounds. The employee’s working environment may occasionally be loud. The employee will be required to adhere to safety procedures, including but not limited to the use of personal protective equipment (e.g. face covering, safety glasses, hard hat, and hearing protection).

How to Apply

If you are interested in becoming a Battery Test Engineer at RePurpose Energy, please email a resume and a request for a written application to We look forward to hearing from you!