The new age of Smartphone Battery
rajinfo 
In a recent Mobile World Congress in Barcelona showcased the a smartphone battery that can be used several weeks without any recharge. It only needs recharging after several days or weeks.
E Ink, the manufacturer of electronic paper displays prototypes of two phones, which runs on Android os showcased that the smartphone battery that can be used several weeks without any recharge. The battery life on the prototypes was said to last up to a month or several weeks of normal use.
Russian manufacturer Yota also show cased off its dual-screen smartphone, which it claims will have a much longer battery life. There will be no drain in their phone’s battery during sleep mode. The phone draws battery power only when it is redrawing the screen.