Energizer Energy 400 official Pictures. Energizer Energy 400 is a Smartphone of energizer. The Energizer Energy 400 Android Smartphone. Announced Jan 2015. Features 4.0″ Display, MT6572 Chipset, 8 MP Primary Camera, 1.3 MP Front Camera, 2400 MAh Battery, 4 GB Storage, 512 MB RAM. Energizer Energy 400 price starts.