Aluminium-ion batteries look promising after the latest break through by Stanford University scientists.
If this makes it to the market it could be a game changer.

Their aluminium-ion battery can be:
- Charged very quickly (around one minute)
- Handle 7500 charge cycles with no loss of capacity
- Can be destroyed/damaged with no risk of fire

http://news.stanford.edu/news/2015/m...ry-033115.html