Samsung will become a new battery supplier to BMW in Europe, while LG will supply batteries to BMW's US production in the future.
BMW has previously used batteries from China's CATL and EVE Energy in its European production.
The new subcontractors will be awarded contracts ahead of BMW's investment in increased production of what it calls sixth-generation high-voltage batteries, which will power electric versions of SUV models such as the iX3.
Last week, BMW - which produces batteries in Germany, China, Hungary, Mexico and the US - announced that it is accelerating the phase-out of older battery models.
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