Energizer Energy E520 LTE official Pictures. Energizer Energy E520 LTE is a Smartphone of energizer. The Energizer Energy E520 LTE Android Smartphone. Announced Sep 2017. Features 5.2″ Display, MT6737 Chipset, 13 MP Primary Camera, 5 MP Front Camera, 4000 MAh Battery, 16 GB Storage, 2 GB RAM, MIL-STD-810G Compliant, Corning Gorilla Glass 3. Energizer Energy E520 LTE price starts.