Broad battery guarantee should reduce concerns about e-cars

Broad battery guarantee should reduce concerns about e-cars-battery

With combustion engines, engine damage is usually the financial catastrophe, with electric cars, the power storage is the risk. If it gives up the ghost, there is a risk of enormous costs – in most cases it may even be a total loss. In order to take away this fear from customers, manufacturers of electric cars are to be obliged in future to guarantee a minimum shelf life for traction batteries.

The members of the “World Forum for the Harmonization of Vehicle Technical Regulations” of the UN Economic Commission for Europe (UNECE) have agreed on a draft for such a regulation, which is still non-binding for the time” citing various sources. Should the regulation come into force, car manufacturers would be obliged to replace batteries after 5 years or 100.000 kilometers to ensure at least 80 percent residual capacity – after 160.000 kilometers or 8 years still at least 70 percent.

According to the UNECE, the aim is to prevent the use of low-quality batteries with such specifications and to strengthen consumer confidence in the long term. For car manufacturers, the regulation would not pose too much of a challenge. The requirements are already met in most of the warranty conditions – in some cases even higher mileages are granted.

In one point, however, the regulation would go even further: consumers could in future be given a kind of right to information. Accurate information about the condition and remaining capacity of the battery should be made available free of charge, Andre Rijnders, chairman of the Working Group on Pollution and Energy (GRPE), is quoted as saying. Such information provided valuable information, especially for used e-cars.

In addition to the EU, the USA and China, Japan, Canada, South Korea and Great Britain are also supporting the push. In March of next year, the nations are to vote on the draft of a binding regulation, which the countries will then have to agree to and then probably have to transfer into national law from 2023. The UNECE expects e-cars to have a share of 10.4 to 19 percent in the overall global vehicle market by 2025. In 2020, the proportion was still 4.6 percent.

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6 thoughts on “Broad battery guarantee should reduce concerns about e-cars”

  1. nonetheless, the used car market for 5-10+ year olds is likely to collapse.. So buy with a grant and get rid of it again after 6 months in order to to the Scandinavian countries or kept after mining until scrapped.

  2. From my point of view, the most important thing about the draft is the obligation to provide information about the battery status.
    The problem is just .. how can i find out for sure? There are procedures in which you can approximately diagnose the SoH, but without official rules on this, every manufacturer does what he wants and cheats on you.
    It needs a method like WLTP range or consumption. Although this is not practical in all cases, it creates comparability.

  3. Don’t most manufacturers already have a guarantee of 70% residual capacity after 8 years/ 160.000km? So the EU wants to enshrine in law what is already being done anyway or how?

  4. “after 160.000 kilometers or 8 years still at least 70 percent.”

    That is the order of magnitude that is already granted today and is far too little. At 95% after 10 years you could slow start talking to each other. But actually I would 95% after 15 years and 500.Expect 000km.

    As it stands now, the way the guarantee is fulfilled is also a problem. Nobody needs to think about driving to the workshop with 69% SOH just before the guarantee expires and coming home with 100%. 1-2 modules are exchanged to bring the battery back to just over 70% and after the guarantee has expired, the next modules soon say goodbye.

    Another factor is the “SOH scam”. The BMS often does not output this correctly, but pretends a false 100% from additionally installed modules. If 120kWh is installed but only 100kWh can be used, I can of course still pretend 100% capacity up to a SOH loss of 20%.

  5. What should you do when a car manufacturer like Mercedes states in its sales brochure that the plug-in hybrid GLC 350 e has an electric range of 45 to 51 km with one battery charge and that in the fourth. Year of use is given by an electric range of 15 km. Wherein the complete charge still results in a measured value of 6.8 to 7.2 kWh.

  6. The legislative initiative goes in the right direction. 10 years 200.000 km and 80% residual capacity with a proof of evidence from the manufacturer and this is free for the customer. Too bad that there is no 30 years old car with places 800.000 km more. That was certainly most outstart.


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