Energizer Hardcase H620S official Pictures. Energizer Hardcase H620S is a Smartphone of energizer. The Energizer Hardcase H620S Android Smartphone. Announced Dec 2020. Features 6.2″ Display, MT6762 Helio P22 Chipset, 5000 MAh Battery, 64 GB Storage, 4 GB RAM. Energizer Hardcase H620S price starts.