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Active balancing technology for robust and long-lasting batteries

September 2019


Active balancing technology for robust and long-lasting batteries

  • World Alliance Member
  • Featured Solution
  • Labelled Solution
Label Date September 12, 2019
From France
Maturity stage TRL 9 / CRI 3-4 - Commercial Scale Up / Multiple commercial Applications

The battery is protected from ageing and the BMS performs continuous battery diagnostics. The strongest cells in the battery support the weakest ones so that the energy is redistributed among the cells during both charge and discharge. As a result, the cell batteries are balanced and their lifespan is prolonged by at least 30%. MetaCard can also manage battery packs which have been reassembled with cells with different ages or second life cells. The solution can be used in various areas such as residential energy storage, electric vehicles, nomadic energy (motor-home, boats) or backup power in uninterruptible power supply (UPS).

The Environmental Benefits

  • Reduces battery waste by 20%.
  • Reduces the energy required to charge a battery by at least 0.5% at every charge.

The Financial Benefits

  • Total cost of ownership is lowered by 17%.
  • Reduces lead-acid needed by 20% for equivalent performance and less charge time.

Target client profile

Activity Region

  • Headquarters
  • Activity

Company Profile


Enerstone supports the energy transition by increasing the lifespan of Lithium-ion batteries, therefore providing an alternative to their obsolescence.

Headquarters 38240 Meylan, France
Type Startup or self-employed
View company profile

Networking Partner


Réseau PEXE, the French Cleantech network, is the leading network of French cleantech clusters. Its main objective is to structure and promote the cleantech industry to accelerate the development of its 5000 SMEs.

Solutions Associated 24
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Cleantech Open France

The Cleantech Open France is looking for the best clean technology ideas from around the country. This is the largest cleantech accelerator program in France and it belongs to the largest international network of cleantech startups, the Cleantech Open founded in California, which has a presence in more than 20 countries worldwide.

Solutions Associated 38
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EuroQuity is the web service created by Bpifrance in partnership with KfW to put growth companies in contact with development partners and with investors in particular.

Solutions Associated 32
View partner profile


Contact the Solution Provider Add to Favorites

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Enerstone has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.