energ is from the compuage , its quality is very poor as per my observations with few customers,cheap buid quality(inside/outside),also low quality relicell battery also bundled with the same.
Its a local assembled product with a generic circuit design commonly used in DIY kits.
please keep away from energ, invest on amaron,su kam,microtek,apc,xenon etc.also look for local onsite support for the same.