Lithium-Ion Battery Repair Technician (E-Bike Fleet)

WHIZZ • Jersey City, NJ

2d

About The Position

Whizz is seeking a Lithium-Ion Battery Repair Technician to maintain its fleet of rechargeable batteries. This hands-on role is suited to mechanically inclined individuals who enjoy working with electronics and want to develop their technical skills. The technician repairs lithium-ion battery packs at the pack and cell level, tests and documents repaired packs before returning them to service, and oversees safe handling of damaged batteries. The role also supports mechanics with battery-related bike issues and coordinates parts usage with the supply team.

Requirements

• At least 3 years of hands-on repair or rebuilding of lithium-ion battery packs, such as e-bike, e-scooter, power tool, EV module, or energy storage batteries.
• Cell-level skills including spot welding, soldering heavy-gauge wire, and cell sorting and matching.
• Solid understanding of BMS systems, including series/parallel configurations, balancing, protection functions, and common failure modes.
• Confidence using a multimeter, internal resistance meter, battery analyzer, or cycler, and ability to read wiring diagrams.
• Strict safety mindset, understanding how lithium-ion packs fail and when a pack should not be repaired.
• Accurate and disciplined record-keeping.

Nice To Haves

• Experience with UL 2271 / UL 2849 products or a manufacturer-authorized repair program.
• DOT hazmat training for shipping lithium batteries (49 CFR).
• IPC J-STD-001 soldering certification, OSHA 10, or NFPA 70E.

Responsibilities

• Repair battery packs at pack and cell level, including replacing BMS boards and failed cell groups with matched cells, spot-welding nickel strip, repairing connectors and wiring, and balancing packs.
• Run charge/discharge tests after every repair; verify balance and insulation, inspect enclosures and seals, and sign off packs before returning them to service.
• Maintain serial-number-level traceability, recording faults, parts used, test results, and repair decisions for every pack.
• Manage the quarantine area for damaged packs, follow safe storage and handling procedures, and maintain fire-response equipment and procedures.
• Support mechanics with battery-related bike issues and share parts usage information with the supply team.

Benefits

• Paid time off, including vacation, sick leave, and public holidays.
• 401(k) retirement plan.
• Health insurance (MEC Plan) with 100% covered preventive care and a $0 deductible.
• Collaborative work environment that values clear processes and practical use of automation tools.
• Commute support available after the probation period.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed