4:54 AM
1/6/2015 · The whiz kids at Tesla say they have made some significant advances with the battery pack for its allelectric Roadster, and those improvements in the Roadster 3.0 upgrade will yield a whopping range of 400 miles on a single charge. While the original battery churned out about 53 kWh, the new pack – still at the same size – produces 70 kWh.
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