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5 key questions about batteries.


Batteries are in the center of both electric and hybrid vehicles.

Theyre everywhere you look: in gaming consoles, in these devices youre scanning this text on, and yes, also in cars. Were discussing batteries. Theyre one of many the different parts of electric and hybrid vehicles, so users want in focusing on how they work. To handle some typically common questions, a specialist from SEAT S.A.s pioneering battery research and development lab, Test Center Energy, answers five key questions about batteries.

What exactly are batteries manufactured from?

The technology we used in the Volkswagen Group is lithium-ion based, specifically with the chemical combination nickel, manganese and cobalt (NMC)explains Francesc Sabat, head of the Test Center Energy (TCE). These elements form cells, which will be the minimum energy self storage that facilitate charging.The cells are grouped into modules and arranged in packs that, alongside the control electronics, the coolant system, and the casings, create the entire battery that’s prepared to be assembled in the automobileadds Francesc.

Whats the difference between a power and a hybrid battery?

The solution is based on their energy storage capacity.Within an electric vehicle, because it doesnt have a combustion engine as in a hybrid, the battery will need more capacity to visit exactly the same distancesays the engineer. Which means that it requires more cells:The battery of a hybrid has around 100 cells, while that of a power vehicle has around 300.

Just how long does it last?

This will depend on what people drive their car: the frequency useful, the temperatures its subjected to and the amount of charge cyclesFrancesc replies. And he adds:Regarding our vehicles, we are able to ensure at the least 160,000 kilometres or 8 years of guaranteed service life because of the intensive tests we subject the batteries to.The testing includes extreme climatic conditions and modes useful that continuously push the batteries with their limits.

How do their life be extended?

The main element is to keep carefully the vehicle in the perfect condition:Its advisable to minimise the amount of quick charges, because this prevents the battery temperature from rising too muchhe explains.Keeping its charge level between 40% and 80% also helps extend the batterys life beyond the minimum warranty criteriathe SEAT S.A. engineer adds.

Do they will have another life?

Many drivers remain not really acquainted with the intricacies of batteries.

Once electric vehicles reach 160,000 km or after 8 years, the battery still performs to around 80% of its capacity.Which means that we might experience a shorter range in everyday usage of the car and for that reason, in the length we are able to travel with it following a chargesays Francesc.Nonetheless it doesnt imply that the battery is not any longer useful, as this 80% capacity may be used in other applications that want less power, such as for example static energy storage.This new function means that an individual battery could be reused to increase its life.


  • 1,500 square metres
  • 1.3 megawatts of testing capacity
  • 6,000 complete tests each year
  • 17,500 hours of tests and simulations
  • 5 test benches
  • 5 climatic chambers with a temperature selection of 80C
  • Operating 24 hours each day, 7 days weekly



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