Battery Tech

We are seeing amazing progress in screens (flexible), power (see CES) and UI (Jellybean) in android, but I don't see any news about battery. I think that the OEMs knows that this is a problem, but they don't have a solution. The majority of the wieght and the size and the USUABILITY is due to the battery.

I'm not talking about increasing the size of the battery or making the phone more battery efficient, but about the battery itself. Why hasn't there been any progress in the energy capacity of the battery? Is it because we simply can't or is it because there isn't enough attention to the subject?

The truth is as a regular consumer the phones right now are powerful and light and ppi is good enough for me. The only thing I would change is battery life.

Please share your thoughts below!