I haven't noticed a significant increase in battery life, but I've been fooling with my tablets internals since it started charging extreamly slow/discharging while charging awhile back. I switched its micro USB port with another from a broken screen N7 and both of them magically fast charge now (that is about 2 hours from 35% to 100%). I had tried all the other fixes known to man like cleaning contacts and reseating the ribbon cables. worked for a short while but switching one micro USB port with the other made both tablets fully functional charging wise once again.