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Battery Intern Jobs in California (NOW HIRING)

Enovix Corporation

R&D Intern

Fremont, CA · On-site

$40 - $45/hr

Battery R&D Internship Enovix is seeking an R&D Intern to support the design, fabrication, testing, and analysis of lithium-ion batteries with silicon-based anodes. This role is well suited for a PhD ...

Enovix Corporation

R&D Intern

Fremont, CA

$40 - $45/hr

Battery R&D Internship Enovix is seeking an R&D Intern to support the design, fabrication, testing, and analysis of lithium-ion batteries with silicon-based anodes. This role is well suited for a PhD ...

Enovix

R&D Intern

Fremont, CA · On-site

$40 - $45/hr

Battery R&D Internship Enovix is seeking an R&D Intern to support the design, fabrication, testing, and analysis of lithium-ion batteries with silicon-based anodes. This role is well suited for a PhD ...

Estes Energy

2026 Fall Engineering Intern

San Francisco, CA · On-site

$19.75 - $25.50/hr

We work on transforming advanced materials into battery systems for industrial and commercial ... As an Engineering Intern, you'll own a meaningful slice of a live project, work shoulder-to ...

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Battery Intern information

What is a battery intern?

Battery Interns are students or recent graduates who work in the battery technology field, typically as part of a temporary internship program. They assist experienced engineers and scientists in areas such as battery design, testing, development, and research. Their responsibilities often include conducting experiments, analyzing data, preparing reports, and supporting ongoing projects related to batteries for electric vehicles, consumer electronics, or renewable energy systems. This role provides valuable hands-on experience and exposure to the latest advancements in battery technology.

What types of projects and collaborations can a battery intern expect during their internship?

As a Battery Intern, you will typically work on hands-on projects such as assembling, testing, and analyzing battery cells or modules under the guidance of experienced engineers. Interns often collaborate closely with R&D teams, lab technicians, and sometimes cross-functional groups like quality assurance or manufacturing. You may be tasked with collecting and interpreting performance data, assisting in troubleshooting issues, and contributing to research documentation. These experiences are designed to give you a comprehensive understanding of battery technologies and real-world problem-solving within a supportive team environment.

What are the key skills and qualifications needed to thrive as a battery intern, and why are they important?

To thrive as a Battery Intern, you need a solid grounding in chemistry, materials science, or electrical engineering, usually demonstrated by current enrollment in a relevant degree program. Familiarity with laboratory equipment, data analysis software (such as MATLAB or Python), and basic electrochemical testing methods is often required. Strong problem-solving skills, attention to detail, and the ability to work collaboratively are important soft skills in this role. These skills and qualifications are crucial to ensure safe, accurate experimentation and effective contribution to battery research and development projects.

What is the difference between Battery Intern vs Battery Technician?

AspectBattery InternBattery Technician
Required CredentialsTypically pursuing or recent graduate of related field; no formal certification requiredHigh school diploma or equivalent; certifications like ASE or manufacturer-specific training often preferred
Work EnvironmentInternship setting, often in labs or controlled environments, supervised by experienced staffHands-on work in repair shops, manufacturing plants, or field service locations
Job ResponsibilitiesAssisting with research, testing, and data collection; learning industry practicesDiagnosing, repairing, and maintaining batteries; performing safety checks

In summary, a Battery Intern is typically a student or recent graduate gaining industry experience, while a Battery Technician is a trained professional performing hands-on battery maintenance and repair. Interns focus on learning and supporting, whereas technicians handle operational tasks in the field or workshop.

What are the most commonly searched types of Battery jobs in California?

The most popular types of Battery jobs in California are:

What cities in California are hiring for Battery Intern jobs?

Cities in California with the most Battery Intern job openings:

Battery Intern jobs near you
Infographic showing various Battery Intern job openings in California as of August 2026, with employment types broken down into 27% Internship, 54% Full Time, 15% Part Time, and 4% Temporary. Highlights an 100% In-person job distribution.

R&D Intern

Enovix Corporation

Fremont, CA • On-site

$40 - $45/hr

Full-time

Re-posted 6 days ago

Job description

Battery R&D Internship
Enovix is seeking an R&D Intern to support the design, fabrication, testing, and analysis of lithium-ion batteries with silicon-based anodes. This role is well suited for a PhD student or graduate researcher with strong experience in electrochemistry, battery materials, cell testing, and failure analysis.
The ideal candidate will bring deep technical expertise in battery materials and electrochemistry, a hands-on approach to experimentation, and enthusiasm for addressing complex challenges in silicon anode commercialization.
The intern should be comfortable working across fundamental science, experimental execution, and product-focused battery development. The intern will collaborate closely with scientists, engineers, and technical leadership to support the development of high-performance lithium-ion cells.
Key Responsibilities
The intern will contribute to one or more of the following areas:
  • Design and evaluate silicon-based anode materials, composites, binders, conductive additives, and electrode formulations.
  • Fabricate electrodes and coin, pouch, or other test cells for electrochemical evaluation.
  • Perform battery testing, including formation, cycling, rate capability, fast-charge testing, impedance measurements, and diagnostics.
  • Analyze capacity retention, coulombic efficiency, impedance growth, swelling, and other key performance metrics.
  • Investigate silicon anode degradation mechanisms, including volume expansion, SEI evolution, particle fracture, lithium inventory loss, and electrode-level failure modes.
  • Use materials characterization techniques such as SEM, TEM, XRD, XPS, Raman, FTIR, BET, TGA, or related methods, as applicable.
  • Develop clear, data-driven recommendations to guide silicon anode material and cell design.
  • Document experimental procedures, results, and conclusions in technical reports and presentations.
  • Work cross-functionally with materials, cell engineering, process development, and product teams.

Required Qualifications
  • Currently enrolled in a PhD program at a leading university, national laboratory, or research institute with a strong focus on batteries, electrochemistry, materials science, chemical engineering, mechanical engineering, or a related field.
  • Research experience in lithium-ion batteries, preferably silicon-carbon or other advanced anode systems.
  • Strong understanding of lithium-ion battery fundamentals, including electrode design, interfacial chemistry, SEI formation, transport limitations, and cell degradation.
  • Hands-on experience with battery cell assembly and electrochemical testing.
  • Ability to analyze complex experimental data and translate results into actionable technical insights.

Preferred Qualifications
  • Direct experience with silicon anode materials, silicon-carbon composites, pre
  • lithiation, binder systems, electrolyte additives, or high-loading electrode design.
  • Familiarity with advanced diagnostic methods such as EIS, GITT, dQ/dV analysis, post-mortem analysis, gas analysis, or mechanical swelling measurements.
  • Experience using Python, MATLAB, JMP, Origin, or similar tools for data analysis.
  • Publications, patents, or conference presentations related to lithium-ion batteries or advanced anode materials.
  • Experience working in industry, a national laboratory, or a collaborative applied research environment.

What You Will Gain
  • Hands-on experience developing next-generation silicon anode lithium-ion battery technology.
  • Exposure to startup-style R&D, rapid experimentation, and practical cell development.
  • Opportunity to work closely with experienced battery scientists and engineers.
  • Experience translating academic research into commercially relevant battery technology.

This is a paid internship that will be onsite at our Fremont, CA office, with an expected duration of 3-6 months. The hourly pay range is $40-$45, depending on experience, qualifications, and other job-related factors.

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