[adestefan]

There's a lot of work to make sure this is actually a safe thing to use. I know lithium ion batteries are pretty dangerous, but you need to be damn sure this is as safe or safer. How does it hold up to heat, cold, punctures, short circuits, etc? What about degradation over time?

Also, there's a lot engineering that needs to happen about how to integrate the proper charging circuits. Plus all the work that needs to go into actual mass manufacturing.

In all there's a shit ton of work for any product to actually make it to a mass market.