Smart EV battery design could extend lifespan by over 20% by bypassing weak cells

Researchers at Chalmers University of Technology proposed a battery architecture that uses electronic switches to bypass aging cells instead of letting them limit the whole pack. Simulations show an 80-kWh battery could delay replacement by about 14 months, extending lifespan by more than 20%.

• Electronics disconnect weak cells while keeping healthy ones operating
• An 80-kWh pack delayed replacement by roughly 14 months in modeling
• Benefits grow with battery voltage, favoring trucks and long-range cars
• Findings rely on simulations, not long-term road testing