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As an installer or specialist partner for the BYD Batter-Box you will find a FAQ of frequently asked questions, access to documents, and technical support/troubleshooting in our Battery-Box Help Center:


EFTs Battery-Box Help Center





For the offical source of datasheets/manuals/compatibity lists, etc. Please visit:


BYD Battery-Box Homepage






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 (2019) and the new Battery-Box Premium HVS/HVM, LVS and LVL (2020) 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.

Battery Box LV
Battery Box Pro
Battery Box HV






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