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Welcome to EFT-Systems GmbH. We are BYD's official partner for BYD Battery-Box, the Chinese World market leader. With the battery system Battery-Box in the basic versions: Battery-Box Pro 2.5-10.0 and Pro 13.8, Battery-Box LV and Battery-BOX HV you can deliver storage systems for a wide variety of applications.

The award-winning storage units offer the highest level of safety and efficiency. Due to the modular design, the capacity can be customized and expanded at any time. Thus, you always have with the battery box the optimal capacity.







Simple layout


Always the perfect battery: individually configured for every application.



Simple expansion


Thanks to its modular design, the Battery Box grows with your requirements over time.



Simply powerful


The right performance for all applications and situations. Emergency power or grid services.

More about the Battery Box