{
  "id": "mh-cd42-lithium-battery-boost-protection-indicator-board",
  "name": "Mh Cd42 Lithium Battery Boost Protection Indicator Board",
  "name_zh": "MH-CD42 鋰電池充放電一體模組 (5V2A)",
  "category": "power/charger",
  "summary_zh": "MH-CD42 鋰電池充放電一體模組能夠同時充電和放電，並為鋰電池提供保護功能，能夠連接任何類型的3.7V鋰電池，就可以提供一個5V輸出，電流高達2.1A。\n板上帶有一個4級LED指示燈，在充電時，四級電池指示燈會有一個LED燈閃爍，意味著電池不到25%的電量。一段時間後，2個LED燈會亮起，第一個會停止閃爍。這意味著您的電池已充滿25%至49%。當所有4個LED燈都點亮且不閃爍時，你的電池就充滿了。在放電模式下，同樣的定義也適用，但情況相反。",
  "specs": {
    "dimensions_mm": {
      "l": 25,
      "w": 20,
      "h": 4
    },
    "weight_g": 4
  },
  "pins": [
    {
      "name": "VIN",
      "type": "power",
      "description": "Charging input, DC 4.5V–5.5V (5V recommended)"
    },
    {
      "name": "GND",
      "type": "ground",
      "description": "Charging input negative"
    },
    {
      "name": "GND",
      "type": "ground",
      "description": "Li-ion battery negative"
    },
    {
      "name": "BAT",
      "type": "power",
      "description": "Li-ion battery positive"
    },
    {
      "name": "GND",
      "type": "ground",
      "description": "Output negative"
    },
    {
      "name": "VOUT",
      "type": "power",
      "description": "Output positive, 5V output"
    },
    {
      "name": "KEY",
      "type": "input",
      "description": "Output enable trigger, active-low pulse"
    }
  ],
  "attributes": {
    "充電芯片": "IP5306",
    "充電電壓": "DC 4.5V-5.5V (建議5V)",
    "充電電流": "0-2.1A",
    "充電靜態電流": "100uA",
    "滿電壓": "4.2V+-1%。",
    "放電電流": "0-3.5A",
    "放電靜態電流": "50uA",
    "放電效率": "96%。",
    "最大輸出電壓": "5V",
    "輸出電流": "0-2.1A",
    "環境溫度": "-20°C至+85°C",
    "電池保護功能": "過電流保護(OCP)、過電壓保護(OVP)、短路保護(SCP)、過溫保護(OTP)",
    "充電和放電功率": "水平4間隔指示"
  },
  "assets": {
    "dimensions": {
      "files": [
        "dimensions.jpeg"
      ],
      "license": "CC-BY-4.0",
      "source": "original"
    },
    "pinout": {
      "files": [
        "pinout.jpeg"
      ],
      "license": "CC-BY-4.0",
      "source": "original"
    },
    "wiring": {
      "files": [
        "wiring.jpeg"
      ],
      "license": "CC-BY-4.0",
      "source": "original"
    },
    "photos": {
      "files": [
        "photos/01.jpeg",
        "photos/02.jpeg",
        "photos/03.jpeg",
        "photos/04.jpeg",
        "photos/05.jpeg"
      ],
      "license": "CC-BY-4.0",
      "source": "original"
    }
  },
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  ],
  "product_id": "52054",
  "updated_at": "2026-09-12"
}