Energizer Hard Case G5 official Pictures. Energizer Hard Case G5 is a Smartphone of energizer. The Energizer Hard Case G5 Android Smartphone. Announced Jun 2021. Features 6.3″ Display MT6853 Dimensity 800U Chipset 5000 MAh Battery 128 GB Storage 6 GB RAM Corning Gorilla Glass 5. Energizer Hard Case G5 price starts.