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The capacity of batteries in electric cars in normal use should not fall below seventy per cent in the first eight years or 160,000 kilometres. Once a battery has reached the end of its life in a car for whatever reason, it has a second life - as a stationary store of electricity. They can be used, for example, by Škoda dealers as part of the charging stations at their showrooms or to power lighting and air conditioning in sales and service centres.
Used batteries from Enyaq iV cars - in this case from test prototypes, not production cars - are already used for energy storage in a public charging station in Prague's Chodov district. Its capacity is 300 kWh, which significantly reduces the demands on the distribution system. The partner in this project is Pražská energetika (PRE), which is testing the use of battery storage as an alternative way of strengthening the distribution network without building a new cable network. Up to twelve electric vehicles can be charged at the same time - ten with an output of 22 kW and two on an ultra-fast 150 kW station.
A pilot project to reuse batteries from electric vehicles has shown one interesting thing: their capacity in stationary storage only decreases by about two per cent per year. This extends the overall lifetime of the batteries to up to fifteen years, significantly reducing the carbon footprint.
Smart systems also store green electricity that is generated by, for example, a dealer's photovoltaic system and is not used at the time and would otherwise be surplus. Storing this electricity makes it available at any time, regardless of the weather or the current load on the local electricity grid.
When a car battery's second service life ends, it is recycled. The recovered raw materials are used to make new batteries.
Source: Škoda
