German manufacturer Varta, one of the most historic names in the European battery industry with over 130 years of experience, has initiated insolvency proceedings for its Varta Microbattery division after losing the contract to supply microbatteries used in Apple’s AirPods. Although the cancellation of this agreement is a severe blow to the company, the crisis had been developing for several years and is the result of a combination of high debt, multimillion-dollar investments, rising costs, and increasing competition from Asian manufacturers.
The key points of Varta’s insolvency in 20 seconds
- Varta Microbattery has filed for insolvency after losing a major contract with Apple.
- The company had already been experiencing a deep financial crisis since 2024, with high debt and ongoing restructuring efforts.
- The loss of the AirPods business adds to pressure from Asian manufacturers and rising production costs.
- The company plans to close a plant and cut around 350 jobs while seeking to sustain part of its operations.
This news marks a new chapter in the challenging situation of a company that for decades was one of Europe’s leading battery producers. Varta became a strategic supplier to Apple thanks to its rechargeable microbatteries, but dependence on a small number of large clients eventually became one of its main risks.
Even before losing the Apple contract, the company had begun restructuring to reduce debt, which was around 500 million euros, and to restore viability amid a business heavily impacted by inflation, raw material costs, and a slowdown in the consumer electronics market.
Apple changes supplier at a particularly delicate time
According to some sources, Apple stopped purchasing certain microbatteries for AirPods from Varta and turned to a Chinese supplier. This decision directly affected the Varta Microbattery division, which specializes in small-format batteries for wireless devices.
The shift comes at an especially difficult time for the German company. Demand for wireless earbuds remains high, but Apple, like other major electronics manufacturers, is diversifying its supplier base to reduce risks, ensure supply security, and improve bargaining power.
For companies with a broad customer base, losing a key contract is challenging. However, when a significant portion of revenue depends on a single client, the impact can be much greater.
In Varta’s case, the loss of the contract coincided with a severely deteriorated financial situation and further accelerated a crisis that had been unfolding for several years.
A crisis that began long before
Attributing the insolvency solely to Apple would oversimplify a far more complex situation.
Varta had already acknowledged financial difficulties over recent years. The company faced high debt, declining profitability, and major investments aimed at expanding production capacity and developing new generations of batteries, especially for automotive and energy storage applications.
In 2024, it initiated a financial restructuring under German legislation StaRUG, designed to avoid traditional insolvency through debt renegotiation and attracting new investors.
Among the investors were Porsche AG and Montana Tech Components, who agreed to recapitalize the company to maintain parts of its operations.
Despite this, some divisions continued to incur losses. The end of the Apple contract particularly impacted Microbattery, which has now applied for specific insolvency proceedings.
The risk of relying on a single major customer
Varta’s case highlights one of the greatest risks facing the tech industry: dependence on a small number of customers.
Major electronics giants like Apple, Samsung, or Microsoft make substantial purchases and can modify their supply chains when better economic conditions, increased production capacity, or alternative suppliers arise.
For specialized suppliers, losing one such contract can mean the sudden loss of a significant portion of revenue.
This situation also underscores the considerable bargaining power companies like Apple hold over their suppliers. Thanks to high production volumes and a global network of manufacturers, they can swiftly shift orders, while suppliers may take years to find new clients with similar volumes.
Europe’s declining role in the battery industry compared to Asia
Beyond the specific case of Apple, Varta is also facing a structural shift in the market.
Asian manufacturers, particularly Chinese and South Korean companies, have significantly increased their production capacity over the past decade. Firms like ATL, EVE Energy, LG Energy Solution, Samsung SDI, and Sunwoda have expanded their presence in both consumer electronics and electric vehicles.
Their larger industrial scale allows them to compete at lower costs and respond quickly to large international contracts.
Simultaneously, developing new battery technologies requires increasingly large investments in R&D, new production lines, and specialized machinery. Smaller companies find it more and more difficult to fund this growth, especially in an environment of high interest rates.
A restructuring that could extend beyond a single plant
Varta has confirmed that the division involved will continue functioning during the insolvency process, aiming to maintain operations and find solutions to preserve part of the business.
Initial measures include closing one plant and cutting approximately 350 jobs, though the final impact depends on the outcome of the restructuring.
The group still employs nearly 3,000 people and operates in other segments related to energy solutions and industrial batteries.
The primary goal now is to stabilize the company, reduce costs, and develop a business model less dependent on a single client.
Varta’s story illustrates how even a company with over a century of experience can face severe challenges when multiple factors converge: ill-timed investments, a highly competitive environment, elevated financing costs, and the loss of one of its main contracts. Apple served as a catalyst for Varta Microbattery’s crisis, but the financial difficulties began much earlier and stem from a deeper issue than the loss of a single deal.
Frequently Asked Questions
Why did Varta Microbattery file for insolvency?
The loss of the Apple contract hastened the division’s crisis, but the company was already burdened with high debt, several years of losses, and an ongoing restructuring process.
Was Apple the only customer of Varta?
Apple was among its most important clients for AirPods microbatteries, but the Varta group operates across other battery market segments.
What will happen to the workers?
The company has announced the closure of one plant and the elimination of around 350 jobs as part of restructuring efforts, though the final impact will depend on how the insolvency process unfolds.
Will Varta disappear?
Not necessarily. Insolvency affects the Microbattery division and aims to facilitate a reorganization. The group continues to operate in other areas while seeking to ensure its long-term viability.

