Tesla announces that replacing the battery pack in the original Roadster will cost $29,000. This bumps the range up to 400 miles. In April, Musk said that the new Roadster battery would likely be ...

Tesla Motors has passed another milestone on the way to Job 1 for their Roadster. The battery pack (or Energy Storage System as Tesla likes to refer to it) has passed the UN and UL 1642 testing ...

Tesla famously build their battery packs from standard 18650 lithium-ion cells, but it’s safe to say that the pack in the Model S has little in common with your laptop battery. Fortunately for ...