Smart Transport

BMW and Mini to give used car batteries a second life

BMW and Mini UK have partnered with Off Grid Energy that will see its used electric vehicle (EV) batteries used as mobile power and fast charging units.

The new partnership has already created the first prototype unit powered by lithium-ion battery modules extracted from a Mini Electric development vehicle.

It has a 40kWh capacity delivering a 7.2kW fast charge and will be used at BMW and MINI UK events over the next year.

Graeme Grieve, BMW Group UK chief executive, said the brand will have 25 electrified models on the road by 2023, half of them fully electric.

He said BMW Group wanted to find a sustainable way of continuing to use the batteries, even after they have put in “many years of service in our EVs”.

BMW and Mini EV batteries have a warranty of eight years or 100,000 miles.

After this period the battery could still retain up to 80% of its initial capacity.

However, BMW said it is inevitable that at some stage, the battery will no longer function at an optimum level for the car – although it can continue to serve a ‘secondary use’ purpose as a mobile power source.

As more battery modules become available over time, systems will be built with a capacity of up to 180kWh and able to provide multiple charges at rates of up to 50kW.

BMW said that when these units are used to displace conventional ways of generating temporary power, the battery modules will at least double the CO2 reduction achieved in their original use in the car, continuing their positive impact in reducing carbon emissions.

The BMW Group expects electrified cars to account for between 15-25% of the company’s global sales before 2025.

By 2021, a quarter of the vehicles sold by the company in Europe will be electrified – that figure is expected to rise to a third by 2025 and half by 2030.

Watch now: Connecting Policy To Solutions Virtual Conference 2021

Smart Transport Conference returned on June 8th & 9th, to facilitate pivotal discussions on the future of transport. 

The UK’s most senior public and private sector transport leaders discussed the impact of Covid-19, achieving the Government’s decarbonisation ambitions, the need for more efficient living and better health, and much more.

Keynote speakers included: 

Kwasi Kwarteng, secretary of state at the Department for Business, Energy and Industrial Strategy (BEIS), who spoke on BEIS's approach to decarbonising transport, particularly the electrification of the vehicle industry

Keith Williams, co-author of the Williams-Shapps Plan for Rail, who spoke on rail’s role in integrated transport, decarbonisation and innovation.

Rachel Maclean, parliamentary under-secretary of state at the Department for Transport, who discussed the future of transport and its pivotal role in a ‘green recovery’ from the pandemic.


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  • FreddieWatts - 30/03/2021 10:38

    This is such good news. It’s perfect timing as I’m planning to change mine with a new one from this BMW battery store online. Thanks again!

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