VTCBATT Powerwall ESS Energy Storage Battery Series has an IP67 waterproof & dustproof case, which uses the best surface materials of thick bake paint steel. It has the best hardness, reliability, and corrosion resistance in the powerwall ESS market. All has the most advanced ESS energy storage system and the most innovative design in the market.VTCBATT Powerwall ESS LiFePO4 battery is the perfect wall-mounted home energy storage battery, which has the characteristics of small floor space, lightweight, convenient installation, less calorie-generating and long cycle life.