A123 Systems
Worldwide leader in complete lithium-ion energy storage solutions
586 employees · est. 2001 · Novi, United States
VARTA AG
We define the future of battery technology to empower a more independent life.
1085 employees · est. 1887 · Ellwangen, Germany
VARTA AG is the older company (2001 vs 1887); VARTA AG is the larger of the two.
Side-by-Side Comparison
| Metric | A123 Systems | VARTA AG |
|---|---|---|
| Founded | ||
| Founded | 2001 | 1887 older |
| Headquarters | ||
| Headquarters | Novi, United States | Ellwangen, Germany |
| Employees | ||
| Employees | 586 | 1085 larger |
| Industry | ||
| Industry | Energy, Manufacturing, Renewable Energy | Energy, Manufacturing, Energy Storage |
| Funding Stage | ||
| Funding Stage | Post Ipo Equity | Late Stage |
| Total Funding | ||
| Total Funding | $507.86M | $344.15M |
| Funding Rounds | ||
| Funding Rounds | 10 | 4 |
| Services | ||
| Services | Not tracked yet | Energy solutions, Battery manufacturing, Custom battery solutions, AI-optimized energy management, Research & Development in battery technology |
| Target Customers | ||
| Target Customers | Not tracked yet | Consumers, Industrial clients, Homeowners, Installers, Children for hearing health products |
| Taxonomy | ||
| Taxonomy | Lithium-ion Batteries, Energy Storage Solutions, Nanophosphate Technology, Battery Systems Management, Operational Excellence, Global Manufacturing Facilities, Engineering Breakthroughs, Commercialization, Battery Integration, Electric Vehicles, Innovative Technologies, Market Demand | Battery Technology, Lithium-Ion Solutions, Microbatteries, Energy Storage Systems, Customer-Specific Battery Solutions, Innovation Leader, Lithium-Ion Coin Power, Battery Packs, Hearing Aid Batteries, Household Batteries, Chargers, Portable Power Banks, Energy Storage Devices, Research And Development, Manufacturing Facilities |
| Website | ||
| Website | a123systems.com | varta-ag.com |
About A123 Systems
A123 Systems is a renowned company that specializes in the development and manufacturing of advanced Nanophosphate® lithium iron phosphate batteries and energy storage systems. Founded in 2001, the company's proprietary Nanophosphate technology, initially developed at the Massachusetts Institute of...
About VARTA AG
VARTA AG, founded in 1887 and headquartered in Germany, is a leading player in the Energy, Manufacturing, and Energy Storage sectors. The company operates primarily through its "Lithium-Ion Solutions & Microbatteries" and "Household Batteries" business segments. The "Lithium-Ion Solutions & Microba...
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Funding, hiring, leadership and stack changes at A123 Systems and VARTA AG — by email.
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Compiled from the BounceWatch company index. We last looked at A123 Systems on 12 Sep 2024, and VARTA AG on 12 Jun 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
