Full-Time

Quality Control Lab Technician

Posted on 9/15/2025

Celgard

Celgard

201-500 employees

High-performance membranes for energy storage

No salary listed

Concord, NC, USA

In Person

Concord is part of the greater Charlotte, NC metro area.

Category
Lab & Research (2)
,
Required Skills
Word/Pages/Docs
Excel/Numbers/Sheets
Requirements
  • High School Diploma or equivalent required
  • 1+ years of 'hands on' experience in a laboratory environment or previous Celgard operations experience required; may consider relevant advanced education and coursework in lieu of experience
  • Proficient in MS Office applications (i.e. MS Office, Excel, Word, Outlook) required
  • Good math skills and understanding of unit conversions (English/Metric) required
  • Prior experience documenting test results/observations required
Responsibilities
  • Perform standard and/or non-routine QC tests including physical and chemical testing
  • Maintain calibration status of equipment
  • Maintain accurate records of data and observations (paper and electronic records)
  • Prepare and verify accuracy of data certificates for product shipments (COA). Maintain QC document control (test procedures, calibration procedures, forms, etc.)
  • Collaborate and demonstrate good communication with team members both within the department and cross-functionally; participate on cross-functional teams; lead meetings
  • Communicates via telephone and e-mail in a friendly and professional manner
  • Participate in employee involvement activities and ISO 9000 / TS16949 initiatives.
  • Practice excellent safety and environmentally sound habits; plan safety into all work activities.
  • Maintain a clean and organized work environment that meets facility standards; participate in 5S activities; keep the quality lab organized and 'tour ready' at all times
  • Present to small groups and participate in customer and visitor tours of the lab and facility
  • Train others (new and current employees) as needed.
  • Maintain a professional and productive relationship with management & co-workers.
  • Utilize KPI's (key performance indicators) to gauge performance, identify areas for improvement, and implement corrective actions.
  • Collaborate with plant personnel from other departments to meet objectives.
  • Participate on cross-functional teams to drive and support continuous improvement initiatives.
  • Work in a high performance, team-centered work environment to support overall plant goals.
  • Utilize Lean Manufacturing Principles to ensure continual improvement.
Desired Qualifications
  • Quality Control Lab performing chemical and physical testing for the release of manufactured products preferred
  • Previous lab experience in an analytical or R&D environment preferred
  • Hands on experience working with polymer resins preferred
  • Experience with an ISO certified system is a plus; Experience as an internal auditor in an ISO certified quality system is a plus
  • Knowledge of basic statistical concepts desired
  • Knowledgeable of requirements needed for a certified environmental system preferred

Celgard makes and sells high-performance membrane materials and thin separators used inside batteries, as well as fabrics for outdoor apparel and medical PPE. The membranes sit between battery electrodes to prevent contact while allowing ions to pass, enabling safe and efficient operation in lithium-ion and other chemistries. The company stands out through its Asahi Kasei Group affiliation and strategic alliances (such as with Æsir Technologies) to pursue new battery chemistries, while expanding manufacturing capacity. Its goal is to provide reliable membranes and protective fabrics at scale to support safer, longer-lasting energy storage and protective textiles, and to drive industry growth through collaborations.

Company Size

201-500

Company Stage

N/A

Total Funding

N/A

Headquarters

Charlotte, North Carolina

Founded

N/A

Simplify Jobs

Simplify's Take

What believers are saying

  • Charlotte plant expansion adds 100 jobs, boosts LIB separator capacity for EVs.
  • Asahi Kasei invests in Hipore wet-process coating lines at Charlotte site.
  • Proven separators serve CATL, Panasonic in high-performance EV, ESS applications.

What critics are saying

  • CATL's in-house separators capture 39% EV market, cut Celgard revenue 10-15% by 2027.
  • SK Innovation, Toray wet-process tech displaces dry-process, erodes share in 12 months.
  • Solid-state batteries from Toyota, QuantumScape eliminate separators by 2028.

What makes Celgard unique

  • Celgard specializes in solvent-free dry-process microporous membranes for lithium-ion batteries.
  • Global facilities in USA, China anchor manufacturing for EV battery separators.
  • Strategic alliances with Æsir, Lithion, C4V target Ni-Zn, LFP, BM-LMP batteries.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

401(k) Company Match

Paid Vacation

Paid Sick Leave

Paid Holidays

Company News

Yahoo Finance
Jan 29th, 2024
Celgard and Æsir Technologies Forge Strategic Alliance to Drive Industry Innovation in Nickel-Zinc, Zinc-Air and Lithium-Zinc Batteries

Together, Celgard and Æsir will collaborate on joint research projects to further develop high-technology next-generation Nickel-Zinc (Ni-Zn), Zinc-Air (Zn-Air), Lithium-Zinc (Li-Zn) and Sodium-Zinc (Na-Zn) batteries used primarily in aviation, data centers, telecom, energy infrastructure and electric vehicle (EV) charging applications.

Plant Services
Nov 30th, 2023
Celgard expands North Carolina manufacturing plant to support electric vehicle supply chain

Celgard, LLC has announced plans to expand its manufacturing facility in Charlotte, North Carolina, generating 100 new jobs in the process.

PR Newswire
Oct 31st, 2023
Celgard Charlotte Manufacturing Facility To Expand Battery Separator Capacity And Create New Jobs

Celgard to expand facilities, workforce and product portfolio to better serve the EV battery separator supply chain. Post thisThe Biden-Harris Administration and the U.S. Department of Energy (DOE) have identified the domestic U.S. battery market as a critical supply chain focus area for the nation. Investments in Celgard's Charlotte plant will allow the company to expand existing infrastructure to quickly meet demand of the lithium-ion battery (LIB) separator supply chain and domestic customers.Celgard manufactures dry-process membrane separator also used in vehicle electrification. The company already has a skilled employee base capable of applying technical coatings to base film shipped from Hipore™ sister locations and completing finishing steps required to meet customer specifications

Tamarindo
Jun 13th, 2023
Celgard & Lithion Battery form battery storage alliance | Tamarindo

US-headquartered Celgard, a subsidiary of Polypore International, has formed a strategic alliance with Lithion Battery, whereby the two companies will undertake joint development of battery separators for lithium-ion cells for energy storage systems and microgrids.

PR Newswire Asia
Jun 7th, 2023
Celgard Takes Another Step In Energy Storage Growth As It Forms Strategic Alliance With Lithion Battery For Next-Generation Battery Cells

CHARLOTTE, N.C., June 7, 2023 /PRNewswire/ -- Celgard, LLC (Celgard), a subsidiary of Polypore International, LP (Polypore), is pleased to announce a newly formed strategic alliance with Lithion Battery, Inc. (Lithion), whereby the two companies will undertake joint development of battery separators for next generation lithium-ion cells with Lithium Iron Phosphate (LFP) cathode material. Through this collaborative effort, the companies will meet the ever-growing demand of supplying consistent power to those in need with energy storage systems (ESS) for uses such as micro-grid power applications. The cells could also be deployed in medical tools and military and industrial markets, where Celgard has been providing separator solutions for decades.

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