EV’s with small battery packs outperform EV’s with larger battery packs

Car manufacturers around the world have believed in one theory when it comes to installing a battery pack in an electric vehicle (EV) – The Bigger The Better. The bigger the battery of your electric car, the more power it will be generating and the more it will run around on a single full charge.

But along with this, larger battery packs are heavier, takes more time to charge, consumes more oil and emits more pollutants. Researchers at Carnegie Mellon University have proof to believe that bigger the better theory does not work in case of electric cars.

Carnegie Mellon University believes that hybrid and plug-in electric vehicles which are installed with smaller batteries, outperform counterparts which are installed with larger battery packs when it comes to oil consumption and emissions.

Mr Jeremy J Michalek, Associate Professor, Mechanical Engineering, CMU, said, “Current government policy provides larger subsidies for vehicles with larger battery packs, assuming that larger is better. While larger battery packs allow plug-in vehicles to drive longer distances on electric power instead of gasoline, they are also expensive and heavy, they are underutilized when the battery capacity is larger than needed for a typical trip, they require more charging infrastructure and they produce more emissions during manufacturing.”

Mr Mikhail Chester, Co-Author of the Report adds, “It’s possible that in the future plug-in vehicles with large battery packs might offer the largest benefits at competitive costs if the right factors fall into place, including sufficiently low cost batteries, high gasoline prices, low emission electricity and long battery life. But such a future is not certain, and in the near term, HEVs and plug-in vehicles with small battery packs provide more emissions benefits and oil displacement benefits per dollar spent.”