The high-voltage battery cabinet is composed of 3-8 battery packs connected in series. The voltage range is from 153.6V to 409.6V. Depending on the capacity of a single battery pack, the capacity of a single battery cabinet ranges from 7.5kwh to 20Kwh, 15kwh to 40kwh, and 30kwh to 80kwh. A single battery cabinet can support 1-3 phase inverters.A high-voitage series energy storage system formed by connecting battery packs in series. In addition, 1 to 15 battery canbinets can be directly connected in parallel, and the total capacity can achieve 7.5kwh to 300kwh,15kwh to 600kwh, 30kwh to 1200kwh. The high-voltage series system works with the battery combiner box, which can support 1 ~ 3 phase inverters