Energizer Power Max P490S official Pictures. Energizer Power Max P490S is a Smartphone of energizer. The Energizer Power Max P490S Android Smartphone. Announced Jun 2018. Features 4.95″ Display MT6739WA Chipset Dual: 8 MP Primary Camera Dual: 5 MP Front Camera 4000 MAh Battery 16 GB Storage 2 GB RAM. Energizer Power Max P490S price starts.