BMW has announced its inaugural iX5 – the first all-electric version of the German brand’s X5 large SUV – will be fitted with the largest battery ever offered in a BMW when it arrives in Northern Hemisphere showrooms in 2027.

The luxury car market leader confirmed the iX5 will include a 144kWh ‘Gen6’ lithium-ion battery in the M60 model grade in North America, and a 141kWh version in Europe – the largest battery yet fitted to a BMW electric vehicle (EV).

The new pack eclipses the size of the largest battery fitted to the current electric Porsche Cayenne, which is 113kWh, and the 90.5kWh battery in the Mercedes-Benz EQE SUV sold in Australia.

While BMW did not reveal the iX5’s range on a single charge, the brand’s similarly sized iX electric SUV currently sold in Australia uses a 108.8kWh battery and offers up to 616km of WLTP range.

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The new iX5’s power output has been confirmed at 425kW, only 30kW shy of the most potent M60 version of the existing iX, alongside detailed outputs for other models across the new-generation X5/iX5 lineup.

The new ‘G65’ X5 and iX5 will adopt ‘Neue Klasse’ tech from the smaller iX3 unveiled last year – due in Australia this month – and the upcoming i3 electric sedan, which includes a flagship M3 variant.

BMW will offer the M3 in both internal-combustion and battery-electric forms, having ruled out a plug-in hybrid (PHEV), as it continues to offer a broad range of powertrains across its model lineup.

That philosophy sees BMW offering five powertrain types across the X5/iX5 range. All will be built at the company’s Spartanburg plant in the US, with petrol, diesel and electric variants sharing the same underpinnings.