Tesla Roadster battery pack replacement will cost $29,000

In August 2014, Tesla CEO Elon Musk talked about “a fairly exciting upgrade” (i.e., an improved battery pack) to the company’s first car, the Lotus-based Roadster. Today, we can finally put a price tag on what it’ll cost you to give your aging all-electric sports car around 35-percent more energy capacity and around 40-percent more range.