Buying a micromax thinking that it would work smoothly and for a longtime than you are wrong as the cell phone hangs, battery gets discharge, and it would require to change the cell phone than to handle it. I think so its just a wastage of money in relation to micromax. As micromax says that battery is like an inverter but I would say its just opposite. the battery gets discharges so early that you have to everytime put your phone on charger. i would recommend to see other brand before putting your money on fire by purchasing it.