McLaren has a battery upgrade for the P1 hypercar

The McLaren P1 launched almost a decade ago was a pioneer when it came to using electrification in high-performance applications. Remember when hybrid technology was synonymous with the Toyota Prius? One of the holy trinity of hybrid hypercars, together with the Ferrari LaFerrari and Porsche 918 Spyder, the P1 combined a powerful V-8 with an …