{"appears_in":[{"position":7,"ranking_slug":"best-power-banks-2026","ranking_title":"2026 年移动电源怎么选：先看 Wh、单口功率和 3C 标识，8 款从随身补电到双笔记本横向对比","score":8.3,"url":"https://buyranker.com/ranking/best-power-banks-2026"}],"brand":"Xiaomi 小米","buy_url":null,"canonical_url":"https://buyranker.com/product/xiaomi-50w-power-bank-20000","category":{"name":"移动电源","slug":"power-bank"},"cons":["50W 不适合高性能笔记本","机型发布时间较早","满载多口时总功率受限"],"description":"适合不需要 100W 笔记本快充的人；如果只给手机用，体积又会比 10K 级明显大。","id":"f42d722e9d9f708ac08bb8284148a1b8","image_url":null,"name":"Xiaomi 50W 移动电源 20000","official_url":"https://www.mi.com/tw/product/mi-50w-power-bank-20000/specs/","price":{"currency":"CNY","max":349,"min":249},"pros":["容量与价格平衡好","三口兼容旧线材","官方明确 Wh 与额定容量","支持低电流设备"],"release_year":2021,"slug":"xiaomi-50w-power-bank-20000","specs":{"接口":"1×USB-C + 2×USB-A","USB-C 输出":"最高 50W","最大输入":"45W","电芯容量":"20000mAh / 74Wh","自充时间":"约 4.5 小时（45W）","额定容量":"12000mAh（5V/4A）"},"summary":"参数不炫，但 74Wh、50W 与三口更贴近多数家庭的真实需求。"}