Sail Solar 261KWH liquid‑cooled outdoor cabinet is a complete high‑voltage battery system tailored for commercial and industrial energy storage system applications. The cabinet integrates four auxiliary systems – BMS, liquid‑cooling thermal management, fire protection, and power distribution – into a closed‑loop safety operation framework. It supports flexible upgrades and can be adapted to other high‑voltage storage systems in our product line, enabling cost‑effective scaling from 261kWh upwards.