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Battery Engineer Interview Questions
184 battery engineer interview questions shared by candidates
- What's the equation that relates energy and power? - What is SoC? - What factors affect the battery life?
The hiring manager asked me about double-layer capacitor and lithium plating modeling. Two things here: (1) He confused a Helmholtz capacitor with a Stern model and (2) No one models a capacitor for a battery model. Some people think because they've done a PhD that they actually know what they are talking about I also had one of the interviewers ask me about impedance modeling. For example, she had questions about what parameters that you'd need to model the impedance response of a lithium-ion cell. She did not know what she was talking about, almost like she was trying to catch me making up things. In fact, I have two major publications on impedance in the Journal of the Electrochemical Society. My experience is that the organization is full of people who think that they know things that they actually don't know. I am so glad I took another opportunity. On a side note, the salary range for a PhD battery modeler with more than 2 years of experience is $150K to $175K.
How did you test battery in your previous company?
Questions about job-related tasks like how would you approach a specific task.
The recruiter asked about binary to hexadecimal conversions, about RC circuit, embedded systems and toolchain process
Tell me how to explain SOC in layman language.
(HireVue) Describe a time when you worked on a controversial design issue. What role did you play? What was the outcome?
(HireVue) Describe a time when you/your team were about to miss (or did miss) a deliverable to the program team. What creative things did you do to recover? What role did you play? What was the outcome?
Describe a time when you had to resolve a safety related issue.
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