Not an expert, but [1] states that current Lion batteries are at 260 Wh/Kg, with 400 Wh/Kg chemistry approaching commercial viability. [1]: https://arxiv.org/f

Not an expert, but [1] states that current Lion batteries are at 260 Wh/Kg, with 400 Wh/Kg chemistry approaching commercial viability. [1]: https://arxiv.org/ftp/arxiv/papers/1803/1803.04317.pdf https://arxiv.org/ftp/arxiv/papers/1803/1803.04317.pdf