How many employees work at A123 Systems?

A123 Systems LLC has 612 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is -4.1%.

Data source: Revelio Labs Coverage: Global workforce Latest update: December 2025

About A123 Systems

A123 Systems, LLC develops and manufactures advanced Nanophosphate® lithium iron phosphate batteries and energy storage systems that deliver high power, maximize usable energy, and provide long life, all with excellent safety performance. Founded in 2001, A123's proprietary Nanophosphate technology is built on novel nanoscale materials initially developed at the Massachusetts Institute of Technology. Today, A123 Systems is headquartered in Livonia, MI and employs more than 2,000 people worldwide. A123 Systems is a TS-16949 and ISO9001 certified supplier of advanced lithium ion cells and systems designed to help customers quickly and cost-effectively take engineering breakthroughs from conception to commercialization. Why A123? Game-changing Technology From breakthrough Nanophosphate chemistry to innovations in battery systems management and complete system design, A123 Systems provides game-changing energy storage solutions that deliver a new combination of high power, excellent safety and long life. Complete Solutions A123 Systems partners with customers to provide complete energy storage solutions that enable the rapid development and delivery of innovative products that meet demand in both existing and emerging markets. Commitment to Operational Excellence At A123, we are dedicated to operational excellence from design and development to production and delivery. Our vertically integrated, state-of-the-art global manufacturing facilities produce high-quality electrodes, cells and battery systems to meet evolving customer requirements for innovative technologies. Field Proven With battery systems operating in vehicles ranging from passenger cars to commercial transit buses around the world, our experienced engineering teams have the expertise to integrate advanced battery systems that deliver premium performance in the field.

As of December 2025

A123 Systems
workforce metrics

Headcount

612

Avg. Salary

$78.8k

Tenure

5.8yr

Growth Rate

-4.1%

Hiring Rate

Attrition Rate

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Employee Headcount

Interactive chart of A123 Systems annual worldwide employee count from 2023 to 2025.

  • A123 Systems total number of employees in 2025 was 611, a 4.1% decline from 2024.
  • A123 Systems total number of employees in 2024 was 637, a 1.3% decline from 2023.
  • A123 Systems total number of employees in 2023 was 645, a 1.2% increase from 2022.

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Employee Geographic Breakdown

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Employee Role Breakdown

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Employee Compensation

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Active Job Postings

Interactive chart of A123 Systems annual active job postings from 2023 to 2025.

  • A123 Systems active job postings in 2025 was 23, a 35.9% increase from 2024.
  • A123 Systems active job postings in 2024 was 16, a 93.3% decline from 2023.
  • A123 Systems active job postings in 2023 was 44, a 29.1% decline from 2022.

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Employee Sentiment

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