[ad_1] Recurrent, a Seattle-based startup, aims to do for electric vehicle batteries what odometers do for fuel-powered cars: Show the wear and tear on the battery and its future value. The used car market is more than twice the size of the new car market, and electric vehicles are fast becoming a part of it. That presents a new problem when it comes to valuing these cars, which run entirely on batteries. Consumers have fundamentally different questions about used electric vehicles, especially when it comes to the battery life. The…