This page was machine-translated from German. German original version
Battery knowledge
General knowledge about batteries and cells – explained clearly and supported by sources from professional associations, public authorities, research institutions and cell manufacturers.
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Basics
How a cell works, what “10S4P” means, why all cells are always replaced and what the BMS does.
OpenCare and safety
Storing and charging correctly, recognising warning signs and knowing what to do in an emergency.
OpenBattery calculator
Calculate the configuration, decode the rating plate and estimate how much a capacity upgrade can achieve.
OpenCell formats
Common cylindrical cells compared true to scale – with dimensions, nominal voltage and capacity according to manufacturer data.
OpenBattery examples
24 e-bike and power tool batteries with configuration and cells – filterable by manufacturer, model and cell type.
OpenGlossary
Technical terms from Ah to cycle, explained briefly and clearly.
OpenThe content is provided for general information and does not replace an inspection of your battery. All sources
Show us your battery
A photo of the battery and its rating plate and a short description of the fault are enough for an initial assessment.