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Are EV battery factory jobs in Japan really the fastest-growing factory role? There is no single official ranking, but the signs are strong: carmakers are building more hybrid and electric vehicles, battery makers such as Toyota Battery and Panasonic Energy sit at the centre of that shift, and recent listings for EV parts assembly pay noticeably more per hour than many general factory jobs. For workers, this means battery and EV parts plants are among the most interesting places to look in 2026, especially for people with electrical, electronics or careful assembly skills.
The work is spread across several regions. Toyota Battery, a wholly owned Toyota subsidiary renamed from Primearth EV Energy in October 2024, makes hybrid vehicle nickel-metal hydride and lithium-ion batteries plus battery management systems at three plants in Kosai, Shizuoka and a plant in Ohira, Miyagi that has operated since 2010. Panasonic Energy has an office in Kaizuka, Osaka. In Ota, Gunma, near Subaru’s plants, agencies advertise EV parts assembly at ¥2,000–¥2,500 per hour, which is roughly double Gunma’s FY2025 minimum wage of ¥1,063.
For foreign nationals, battery and EV parts production is manufacturing work that may potentially fit the Specified Skilled Worker (SSW) field Industrial Products Manufacturing, which covers automobile and parts manufacturing and electronic components, depending on exact duties and occupational classification. Battery chemists and engineers with degrees are usually considered under the Engineer/Specialist in Humanities/International Services status. Many of the best-paid EV listings are agency (dispatch) jobs, which SSW holders cannot take, so the route matters as much as the pay.
EV Battery Factory Jobs 2026 – Quick Overview
| Job Title | EV Parts Assembler, Battery Cell Operator, Pack Assembler, Test Operator |
| Country | Japan |
| Location | Kosai (Shizuoka), Ohira (Miyagi), Ota (Gunma), Kaizuka (Osaka) and other auto regions |
| Employers | Toyota Battery, Panasonic Energy, EV parts suppliers and staffing agencies |
| Industry | EV and hybrid battery, automotive electrical parts |
| Indicative Salary | ¥230,000 – ¥360,000 per month depending on role and contract |
| Experienced Salary | ¥290,000 – ¥480,000 base for mid-career battery staff (Toyota Battery example) |
| Education | 10th/12th pass for assembly; ITI or diploma for technical roles; degree for engineers |
| Experience | Not always required for assembly; preferred for operators and technicians |
| Japanese | N4 for line roles; N3–N2 for technical and office roles |
| Work Type | Dispatch, contract and full-time |
| Work Schedule | Day shift or rotating shifts |
| Accommodation | Offered by some agencies; varies by employer |
| Overtime | Depends on production volume; paid at premium rates |
What Does an EV Battery Factory Worker Do?
An EV battery factory worker produces, assembles or tests the battery cells, modules, packs and electrical parts that power hybrid and electric cars.
- Sets up materials for electrode and cell production machines
- Monitors automated lines in humidity-controlled rooms
- Stacks or places cells into module frames
- Connects bus bars, sensors and harnesses inside packs
- Installs battery management system boards and cooling plates
- Uses insulated tools when working near live components
- Runs voltage, resistance and insulation tests
- Reads test results on screens and separates failed units
- Labels and scans units for full traceability
- Assembles EV electrical parts such as wiring and connectors
- Packs batteries using approved, safe shipping methods
- Participates in daily safety and quality meetings
Types of EV Battery Factory Jobs
Electrode and Cell Production Operator
These operators run the coating, pressing, cutting and cell assembly machines at the start of the battery process, where cleanliness and moisture control are critical.
Formation and Testing Operator
After assembly, cells are charged and checked over time; operators load test racks and track data.
Module and Pack Assembler
Assemblers join cells into modules and packs, add electronics and cooling parts and close the housing.
EV Parts Assembler
Supplier plants assemble EV-related components, and recent Ota, Gunma listings for this work show some of the highest hourly pay in factory recruitment.
Battery Equipment Maintenance Technician
Technicians maintain automated machines, robots and test equipment, a good fit for ITI electricians and electronics mechanics.
Battery Engineer and Mid-Career Specialist
Toyota Battery recruits mid-career staff for engineering, purchasing and related roles, usually requiring experience and strong Japanese.
EV Battery Factory Salary 2026
| Position | Indicative Monthly Salary |
| EV Parts Assembler (dispatch, Ota, Gunma) | ¥340,000 – ¥425,000 (hourly ¥2,000 – ¥2,500) |
| Toyota Battery Mid-Career Staff (Kosai) | ¥290,000 – ¥480,000 |
| Airbag Production Operator (dispatch, Gunma) | ¥224,000 – ¥297,500 (hourly ¥1,400 – ¥1,750) |
| Auto Parts Assembly Worker (full-time, Gunma) | ¥199,000 – ¥257,000 |
| Truck Plant Contract Worker (Hino Nitta plant) | ¥220,500 – ¥231,000 base |
The comparison shows why EV work stands out: in the same Gunma area, EV parts assembly listings pay a higher hourly rate than airbag or general parts assembly. All figures are from recent listings, and hourly roles depend on hours actually worked, so always confirm base pay, overtime and deductions.
EV Battery Factory Jobs for Foreign Workers
The SSW field Industrial Products Manufacturing expanded from 10 to 17 business categories in June 2026, and its eligible industries include automobile and parts manufacturing and electronic components and devices. Battery production may potentially fall within these industries, but you should not assume every vacancy qualifies; the employer’s registered industry and the actual tasks decide.
SSW holders in this field must be hired directly by an eligible manufacturer that belongs to JAIM, the industry organisation that represents employers on the government council. Dispatch work is not allowed, so the high-paying agency EV listings are generally open only to people already holding unrestricted statuses such as permanent resident or spouse of a Japanese national.
The overall SSW (i) cap for manufacturing is 199,500 workers through March 2029, which shows that the government expects continued demand in the sector. Even so, no battery maker we researched has a verified programme to recruit factory workers from overseas. Never pay an unlicensed agent, and remember that a job advertisement is not a visa guarantee.
Japanese Language Requirement
Batteries store a lot of energy, so following spoken and written safety instructions is essential from the first day.
- Understand warning signs and emergency instructions
- Read test results and pass/fail labels on screens
- Follow work standards written in simple Japanese with diagrams
- Report overheating, damage or unusual smells immediately
- JLPT N4 is usually the minimum for line roles; N2 for engineering
For SSW (i), applicants need JFT-Basic or JLPT N4 or above, along with the manufacturing skills evaluation test or national trade skills test grade 3.
Eligibility
- 18 years or older
- Valid residence status for the job type, or a direct SSW offer
- Comfort working in controlled, enclosed production areas
- Steady hands and attention to detail
- Ability to tell wire and label colours apart where checks require it
- Ability to follow electrical safety rules strictly
- Readiness for shift work
- Pass the employer’s medical check
Education Qualification
EV battery work spans simple assembly to advanced engineering, so qualifications depend on the level you target.
- Assembly and packing: 10th or 12th pass
- Test operators: 12th pass with science, or diploma
- Maintenance: ITI electrician, electronics mechanic or mechatronics
- Engineers: degree in electrical, chemical, materials or mechanical engineering, or chemistry
Daily Work of an EV Battery Factory Worker
Here is how a typical shift may look for a module and pack assembler:
- Clock in, change into anti-static clothing, and remove metal items such as rings and watches.
- Join the team meeting to review the day’s pack count and any quality alerts from customers.
- Check your insulated tools and torque wrench calibration labels.
- Receive tested cells or modules from the previous process and verify their barcodes.
- Place modules into the pack tray and fasten them to specified torque values.
- Connect bus bars and sensor wiring in the correct order shown on the work standard.
- Install the control board and cooling components, then close the cover.
- Move the pack to the testing station and record the insulation and voltage results.
- Send any failed unit to the rework area with a defect tag.
- Clean the area, return tools to shadow boards and update the shift record.
Electrical and fire safety training is mandatory in battery plants, and workers must never handle damaged cells without following the correct procedure.
Working Hours
- Typically 8-hour shifts, 5 days per week
- Day-only roles exist, especially in parts assembly
- Cell production lines often run around the clock with rotating shifts
- Night and overtime premiums increase monthly pay
- Production may increase when new EV or hybrid models launch
Confirm your shift pattern before signing, as it affects both lifestyle and income.
Accommodation
- Some agencies provide furnished apartments near plants
- Direct employers may offer housing support instead of dorms
- Rural plant locations often require a bicycle, car or company bus
- Shared housing can lower costs for new arrivals
- Rent in regional towns is usually lower than in big cities
Make sure you know what is deducted for rent, utilities and furniture each month.
Benefits
- Higher hourly pay in EV-related listings than many general factory jobs
- Health insurance, pension and employment insurance
- Night shift and overtime premiums
- Paid leave under Japanese labour law
- Technical training in high-voltage safety and testing
- Bonuses for direct employees at many companies
- Skills that are useful across the automotive and energy storage industries
Actual benefits depend on whether you are employed directly or through an agency, and on your contract.
Career Growth
Assembler → Test Operator → Process Leader → Supervisor
- Learning testing and data review leads toward quality roles
- Electrical skills can lead to maintenance and automation work
- Experience in battery plants is transferable as more manufacturers electrify
- SSW workers in electrical and electronic assembly may aim for SSW (ii) where available
- Degree holders can grow into process or product engineering
Skills That Can Improve Your Chances
- Basic electrical knowledge: voltage, current, insulation and polarity
- Use of multimeters and insulation testers
- Torque wrench and fastening experience
- Wiring harness or connector assembly experience
- Understanding of electrostatic discharge (ESD) precautions
- Calm, rule-based response to alarms
- Barcode systems and simple data entry
- JLPT N4 or higher
- ITI electrician or electronics mechanic certificate
- Reliable attendance and teamwork
Documents Required
- Valid passport
- CV or Japanese-style rirekisho
- Education and ITI/diploma certificates
- Experience certificates, especially electrical or electronics work
- JLPT or JFT-Basic result
- SSW skills test or trade skills test result if applicable
- Photographs
- Residence card for applicants in Japan
Requirements change by employer and visa type, so follow the official list you are given.
How to Apply Online
Step 1: Prepare Your CV
Write a focused CV that highlights electrical, electronics or assembly experience.
Step 2: Describe Your Skills
Give examples of testing, wiring, torque work or safety practices you have used.
Step 3: Gather Certificates
Prepare education, ITI, language and experience certificates in scanned form.
Step 4: Check the Job Category
Check whether the job is direct or dispatch and whether it matches an SSW manufacturing category.
Step 5: Complete Required Tests
Pass the manufacturing SSW test and JFT-Basic or JLPT N4 if you are applying under SSW.
Step 6: Attend the Interview
Apply through Toyota Battery or Panasonic Energy official career pages or licensed agencies and prepare for questions on safety and precision.
Step 7: Review the Contract
Read hourly or monthly pay, overtime rules, shifts, housing costs and contract length carefully.
Step 8: Complete Immigration Procedures
The direct employer applies for your Certificate of Eligibility, and you then apply for the visa abroad.
EV Battery Factory Jobs 2026 – FAQs
Why is EV battery work growing in Japan?
Carmakers are adding hybrid and electric models, so demand for battery production and EV parts has increased.
Do EV battery jobs pay more than other factory jobs?
Recent Gunma listings show EV parts assembly at ¥2,000–¥2,500 per hour, higher than nearby airbag or general parts roles.
What is Toyota Battery?
It is Toyota’s wholly owned battery subsidiary, formerly Primearth EV Energy, with plants in Kosai, Shizuoka and Miyagi.
Is high-voltage work dangerous for beginners?
Beginners usually start on low-risk tasks after safety training, and high-voltage work is restricted to trained staff.
Can SSW holders take agency EV jobs?
No, the manufacturing SSW field requires direct employment, so dispatch roles do not fit.
Is ITI electrician training useful?
Yes, it is highly relevant for testing and maintenance roles in battery plants.
Will these jobs last?
Demand depends on vehicle sales and company plans, so no job is permanent, but battery skills are widely transferable.
Is this a guaranteed job offer?
No. This article provides information only, and hiring depends on the employer and immigration approval.
Final Words
EV battery and parts plants combine automotive manufacturing with electrical skills, and that mix is why the role is attracting so much attention and higher pay in some listings. Build basic electrical knowledge, reach at least JLPT N4, understand the difference between direct and dispatch work, and apply only through official pages or licensed agencies. Never pay anyone for a promised battery factory job.
Disclaimer: All salary figures mentioned in this article are indicative estimates based on published job listings and industry data and may vary by employer, location, experience, and contract terms. They do not represent a guaranteed salary, job offer, or visa approval. This website is not affiliated with Toyota Battery, Panasonic Energy or any other company mentioned.