commit 5dc397e994f0da1d1d6ba4735f6c858582c2777a
Author: dvs-dvsxt <dvs6666@163.com>
Date:   Fri Aug 28 10:09:29 2026 +0800

    Initial commit: EyeOnPower v1.0.0

diff --git a/.gitignore b/.gitignore
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+# Python
+__pycache__/
+*.py[cod]
+*.egg-info/
+dist/
+build/
+.venv/
+venv/
+env/
+
+# PyInstaller
+*.spec
+
+# System files
+Thumbs.db
+.DS_Store
+desktop.ini
diff --git a/EyeOnPower.exe b/EyeOnPower.exe
new file mode 100644
index 0000000..c91ed9f
Binary files /dev/null and b/EyeOnPower.exe differ
diff --git a/EyeOnPower.py b/EyeOnPower.py
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+++ b/EyeOnPower.py
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+"""
+EyeOnPower | 电量守望者
+Windows 电池电量实时监测工具
+功能：屏幕右下角置顶显示电量百分比、充电状态、剩余续航时间、当前时间日期
+支持展开/折叠详细信息，支持切换置顶状态
+"""
+
+import sys
+import time
+import ctypes
+from ctypes import wintypes
+from PyQt5.QtWidgets import (QApplication, QMainWindow, QWidget, QVBoxLayout, 
+                             QLabel, QProgressBar, QGroupBox, QGridLayout,
+                             QScrollArea, QPushButton, QHBoxLayout, QFrame)
+from PyQt5.QtCore import QTimer, Qt
+from PyQt5.QtGui import QFont
+
+# 忽略 PyQt5 的 DeprecationWarning
+import warnings
+warnings.filterwarnings("ignore", category=DeprecationWarning)
+
+# 尝试导入 wmi
+try:
+    import wmi
+    WMI_AVAILABLE = True
+except ImportError:
+    WMI_AVAILABLE = False
+
+# ============== WinAPI 结构体 ==============
+AC_LINE_ONLINE = 1
+BATTERY_LIFE_UNKNOWN = 0xFFFFFFFF
+
+class SYSTEM_POWER_STATUS(ctypes.Structure):
+    _fields_ = [
+        ('ACLineStatus', ctypes.c_byte),
+        ('BatteryFlag', ctypes.c_byte),
+        ('BatteryLifePercent', ctypes.c_byte),
+        ('Reserved1', ctypes.c_byte),
+        ('BatteryLifeTime', wintypes.DWORD),
+        ('BatteryFullLifeTime', wintypes.DWORD),
+    ]
+
+def get_power_status():
+    """调用 GetSystemPowerStatus API（最稳定）"""
+    try:
+        kernel32 = ctypes.windll.kernel32
+        status = SYSTEM_POWER_STATUS()
+        if kernel32.GetSystemPowerStatus(ctypes.byref(status)):
+            return status
+    except Exception as e:
+        print(f"GetSystemPowerStatus 错误: {e}")
+    return None
+
+def safe_int(value, default=0):
+    """安全地转换为整数"""
+    try:
+        if value is None:
+            return default
+        if isinstance(value, (int, float)):
+            return int(value)
+        if isinstance(value, str):
+            if value.strip().isdigit():
+                return int(value)
+            return default
+        return default
+    except:
+        return default
+
+def safe_str(value, default="未知"):
+    """安全地转换为字符串"""
+    try:
+        if value is None:
+            return default
+        if isinstance(value, str) and value.strip():
+            return value.strip()
+        if value:
+            return str(value)
+        return default
+    except:
+        return default
+
+def format_remaining_time(seconds):
+    """格式化剩余时间 - 过大则显示未知"""
+    try:
+        secs = safe_int(seconds, 0)
+        if secs <= 0 or secs == BATTERY_LIFE_UNKNOWN or secs > 864000:
+            return "未知"
+        
+        hours = secs // 3600
+        minutes = (secs % 3600) // 60
+        if hours > 0:
+            return f"{hours}小时 {minutes}分钟"
+        else:
+            return f"{minutes}分钟"
+    except:
+        return "未知"
+
+def get_current_datetime():
+    """获取当前日期时间字符串"""
+    now = time.localtime()
+    weekdays = ["周一", "周二", "周三", "周四", "周五", "周六", "周日"]
+    return f"{now.tm_year}-{now.tm_mon:02d}-{now.tm_mday:02d} {weekdays[now.tm_wday]} {now.tm_hour:02d}:{now.tm_min:02d}:{now.tm_sec:02d}"
+
+class EyeOnPower(QMainWindow):
+    """电量守望者主窗口"""
+    
+    def __init__(self):
+        super().__init__()
+        self.battery_info = {}
+        self.wmi_error = None
+        self.detailed_visible = False  # 详细信息是否可见
+        self.is_topmost = True  # 默认置顶状态
+        
+        # 获取 WMI 信息
+        if WMI_AVAILABLE:
+            try:
+                wmi_conn = wmi.WMI()
+                self.get_wmi_battery_info(wmi_conn)
+            except Exception as e:
+                self.wmi_error = f"WMI 初始化失败: {str(e)}"
+                print(self.wmi_error)
+        else:
+            self.wmi_error = "wmi 模块未安装 (pip install wmi)"
+        
+        self.init_ui()
+        
+        # 设置定时器，每秒更新一次
+        self.timer = QTimer()
+        self.timer.timeout.connect(self.update_battery_info)
+        self.timer.start(1000)
+        self.update_battery_info()
+    
+    def get_wmi_battery_info(self, wmi_conn):
+        """通过 WMI 获取电池详细信息"""
+        try:
+            batteries = wmi_conn.Win32_Battery()
+            for battery in batteries:
+                # 电池状态
+                self.battery_info['battery_status'] = safe_int(getattr(battery, 'BatteryStatus', None), 0)
+                
+                # 化学类型
+                chem = getattr(battery, 'Chemistry', None)
+                chem_int = safe_int(chem, 0)
+                chemistry_map = {1: "其他", 2: "未知", 3: "铅酸", 4: "镍镉", 5: "镍氢", 
+                                 6: "锂离子", 7: "锌空气", 8: "锂聚合物"}
+                self.battery_info['chemistry'] = chemistry_map.get(chem_int, f"类型{chem_int}" if chem_int > 0 else "未知")
+                
+                # 容量信息
+                self.battery_info['design_capacity'] = safe_int(getattr(battery, 'DesignCapacity', 0), 0)
+                self.battery_info['full_capacity'] = safe_int(getattr(battery, 'FullChargeCapacity', 0), 0)
+                self.battery_info['design_voltage'] = safe_int(getattr(battery, 'DesignVoltage', 0), 0)
+                
+                # 预估信息
+                est_charge = getattr(battery, 'EstimatedChargeRemaining', None)
+                self.battery_info['estimated_charge'] = safe_int(est_charge, None) if est_charge is not None else None
+                
+                est_time = getattr(battery, 'EstimatedRunTime', None)
+                self.battery_info['estimated_run_time'] = safe_int(est_time, None) if est_time is not None else None
+                
+                time_to_full = getattr(battery, 'TimeToFullCharge', None)
+                self.battery_info['time_to_full'] = safe_int(time_to_full, None) if time_to_full is not None else None
+                
+                # 基本信息
+                self.battery_info['name'] = safe_str(getattr(battery, 'Name', None), "未知")
+                self.battery_info['manufacturer'] = safe_str(getattr(battery, 'Manufacturer', None), "未知")
+                self.battery_info['serial'] = safe_str(getattr(battery, 'SerialNumber', None), "未知")
+                self.battery_info['device_id'] = safe_str(getattr(battery, 'DeviceID', None), "未知")
+                self.battery_info['smart_version'] = safe_str(getattr(battery, 'SmartBatteryVersion', None), "未知")
+                
+                break
+                
+            if not self.battery_info:
+                self.wmi_error = "未检测到电池"
+                
+        except Exception as e:
+            self.wmi_error = f"WMI 获取失败: {str(e)}"
+            print(self.wmi_error)
+    
+    def toggle_topmost(self):
+        """切换窗口置顶状态"""
+        if self.is_topmost:
+            # 取消置顶：从窗口标志中移除置顶属性
+            self.setWindowFlags(self.windowFlags() & ~Qt.WindowStaysOnTopHint)
+            self.topmost_btn.setText("📌 置顶 (关)")
+            self.topmost_btn.setStyleSheet("""
+                QPushButton {
+                    padding: 6px 10px;
+                    background-color: #95a5a6;
+                    color: white;
+                    border: none;
+                    border-radius: 4px;
+                }
+                QPushButton:hover {
+                    background-color: #7f8c8d;
+                }
+            """)
+            self.is_topmost = False
+        else:
+            # 设置置顶：添加置顶属性
+            self.setWindowFlags(self.windowFlags() | Qt.WindowStaysOnTopHint)
+            self.topmost_btn.setText("📌 置顶 (开)")
+            self.topmost_btn.setStyleSheet("""
+                QPushButton {
+                    padding: 6px 10px;
+                    background-color: #27ae60;
+                    color: white;
+                    border: none;
+                    border-radius: 4px;
+                }
+                QPushButton:hover {
+                    background-color: #2ecc71;
+                }
+            """)
+            self.is_topmost = True
+        
+        # 关键：修改窗口标志后必须重新 show() 才会生效
+        self.show()
+    
+    def init_ui(self):
+        """初始化用户界面"""
+        self.setWindowTitle("EyeOnPower - 电量守望者")
+        
+        # 初始小窗口大小
+        self.setFixedSize(340, 270)
+        
+        # 默认设置窗口置顶标志
+        self.setWindowFlags(self.windowFlags() | Qt.WindowStaysOnTopHint)
+        
+        # 获取屏幕尺寸，计算右下角位置
+        screen = QApplication.primaryScreen().geometry()
+        x = screen.width() - self.width() - 20  # 距离右边20像素
+        y = screen.height() - self.height() - 50  # 距离底部50像素（避开任务栏）
+        self.move(x, y)
+        
+        # 创建中央窗口部件
+        central = QWidget()
+        central.setStyleSheet("background: #ecf0f1;")
+        self.setCentralWidget(central)
+        
+        # 主布局
+        self.main_layout = QVBoxLayout(central)
+        self.main_layout.setSpacing(8)
+        self.main_layout.setContentsMargins(10, 10, 10, 10)
+        
+        # ========== 标题栏（包含标题按钮和置顶按钮） ==========
+        title_layout = QHBoxLayout()
+        
+        # 标题按钮（用于展开/折叠详细信息）
+        self.title_button = QPushButton("👁️ 电量守望者  ▼")
+        self.title_button.setFont(QFont("Microsoft YaHei", 10, QFont.Bold))
+        self.title_button.setStyleSheet("""
+            QPushButton {
+                text-align: left;
+                padding: 5px;
+                background-color: #34495e;
+                color: white;
+                border: none;
+                border-radius: 4px;
+                font-weight: bold;
+            }
+            QPushButton:hover {
+                background-color: #2c3e50;
+            }
+        """)
+        self.title_button.clicked.connect(self.toggle_detailed_info)
+        title_layout.addWidget(self.title_button)
+        
+        # 置顶切换按钮
+        self.topmost_btn = QPushButton("📌 置顶 (开)")
+        self.topmost_btn.setFont(QFont("Microsoft YaHei", 8))
+        self.topmost_btn.setStyleSheet("""
+            QPushButton {
+                padding: 5px 8px;
+                background-color: #27ae60;
+                color: white;
+                border: none;
+                border-radius: 4px;
+            }
+            QPushButton:hover {
+                background-color: #2ecc71;
+            }
+        """)
+        self.topmost_btn.clicked.connect(self.toggle_topmost)
+        title_layout.addWidget(self.topmost_btn)
+        
+        self.main_layout.addLayout(title_layout)
+        
+        # ========== 日期时间区域 ==========
+        datetime_frame = QFrame()
+        datetime_frame.setStyleSheet("""
+            QFrame {
+                background-color: #2c3e50;
+                border-radius: 4px;
+                padding: 5px;
+            }
+        """)
+        datetime_layout = QHBoxLayout(datetime_frame)
+        datetime_layout.setContentsMargins(8, 4, 8, 4)
+        
+        self.datetime_label = QLabel(get_current_datetime())
+        self.datetime_label.setFont(QFont("Microsoft YaHei", 9))
+        self.datetime_label.setStyleSheet("color: #ecf0f1;")
+        self.datetime_label.setAlignment(Qt.AlignCenter)
+        datetime_layout.addWidget(self.datetime_label)
+        
+        self.main_layout.addWidget(datetime_frame)
+        
+        # ========== 关键信息区域（始终显示） ==========
+        key_group = QGroupBox("📊 电量实时监控")
+        key_group.setStyleSheet("""
+            QGroupBox { 
+                font-weight: bold; 
+                border: 2px solid #3498db; 
+                border-radius: 6px; 
+                margin-top: 8px;
+                font-size: 11px;
+            }
+            QGroupBox::title { 
+                subcontrol-origin: margin; 
+                left: 10px; 
+                padding: 0 5px; 
+                color: #3498db;
+            }
+        """)
+        key_layout = QGridLayout()
+        key_layout.setSpacing(6)
+        
+        # 电量百分比（大字体）
+        self.percent_label = QLabel("--%")
+        self.percent_label.setFont(QFont("Arial", 32, QFont.Bold))
+        self.percent_label.setStyleSheet("color: #2ecc71;")
+        key_layout.addWidget(self.percent_label, 0, 0, 1, 2)
+        
+        # 进度条
+        self.progress = QProgressBar()
+        self.progress.setRange(0, 100)
+        self.progress.setFixedHeight(18)
+        key_layout.addWidget(self.progress, 1, 0, 1, 2)
+        
+        # 电源状态
+        key_layout.addWidget(QLabel("电源状态:"), 2, 0)
+        self.power_status = QLabel("--")
+        self.power_status.setStyleSheet("color: #3498db; font-weight: bold;")
+        key_layout.addWidget(self.power_status, 2, 1)
+        
+        # 剩余时间
+        key_layout.addWidget(QLabel("剩余时间:"), 3, 0)
+        self.remaining_time = QLabel("--")
+        key_layout.addWidget(self.remaining_time, 3, 1)
+        
+        key_group.setLayout(key_layout)
+        self.main_layout.addWidget(key_group)
+        
+        # ========== 详细信息区域（初始隐藏） ==========
+        self.detailed_group = QGroupBox("🔧 电池详细信息")
+        self.detailed_group.setVisible(False)
+        self.detailed_group.setStyleSheet("""
+            QGroupBox { 
+                font-weight: bold; 
+                border: 2px solid #27ae60; 
+                border-radius: 6px; 
+                margin-top: 8px;
+                background-color: #f8f9fa;
+                font-size: 10px;
+            }
+            QGroupBox::title { 
+                subcontrol-origin: margin; 
+                left: 10px; 
+                padding: 0 5px; 
+                color: #27ae60; 
+            }
+            QLabel { 
+                padding: 2px;
+                font-size: 10px;
+            }
+        """)
+        
+        # 使用 QScrollArea 使详细信息可滚动
+        detail_scroll = QScrollArea()
+        detail_scroll.setWidgetResizable(True)
+        detail_scroll.setStyleSheet("QScrollArea { border: none; background: transparent; }")
+        
+        detail_content = QWidget()
+        detail_layout = QGridLayout(detail_content)
+        detail_layout.setSpacing(4)
+        detail_layout.setContentsMargins(6, 6, 6, 6)
+        
+        # 添加所有详细信息
+        row = 0
+        
+        # 制造商
+        detail_layout.addWidget(QLabel("制造商:"), row, 0)
+        self.detail_manufacturer = QLabel("未知")
+        detail_layout.addWidget(self.detail_manufacturer, row, 1)
+        row += 1
+        
+        # 电池名称
+        detail_layout.addWidget(QLabel("电池名称:"), row, 0)
+        self.detail_name = QLabel("未知")
+        detail_layout.addWidget(self.detail_name, row, 1)
+        row += 1
+        
+        # 化学类型
+        detail_layout.addWidget(QLabel("化学类型:"), row, 0)
+        self.detail_chemistry = QLabel("未知")
+        detail_layout.addWidget(self.detail_chemistry, row, 1)
+        row += 1
+        
+        # 设计容量
+        detail_layout.addWidget(QLabel("设计容量:"), row, 0)
+        self.detail_design_cap = QLabel("未知")
+        detail_layout.addWidget(self.detail_design_cap, row, 1)
+        row += 1
+        
+        # 当前满充容量
+        detail_layout.addWidget(QLabel("当前满充容量:"), row, 0)
+        self.detail_full_cap = QLabel("未知")
+        detail_layout.addWidget(self.detail_full_cap, row, 1)
+        row += 1
+        
+        # 电池健康度
+        detail_layout.addWidget(QLabel("电池健康度:"), row, 0)
+        self.detail_health = QLabel("未知")
+        self.detail_health.setStyleSheet("font-weight: bold;")
+        detail_layout.addWidget(self.detail_health, row, 1)
+        row += 1
+        
+        # 设计电压
+        detail_layout.addWidget(QLabel("设计电压:"), row, 0)
+        self.detail_voltage = QLabel("未知")
+        detail_layout.addWidget(self.detail_voltage, row, 1)
+        row += 1
+        
+        # 预估剩余电量
+        detail_layout.addWidget(QLabel("预估剩余电量:"), row, 0)
+        self.detail_estimated = QLabel("未知")
+        detail_layout.addWidget(self.detail_estimated, row, 1)
+        row += 1
+        
+        # 序列号
+        detail_layout.addWidget(QLabel("序列号:"), row, 0)
+        self.detail_serial = QLabel("未知")
+        detail_layout.addWidget(self.detail_serial, row, 1)
+        row += 1
+        
+        # 设备ID
+        detail_layout.addWidget(QLabel("设备ID:"), row, 0)
+        self.detail_device_id = QLabel("未知")
+        detail_layout.addWidget(self.detail_device_id, row, 1)
+        row += 1
+        
+        # 数据来源
+        detail_layout.addWidget(QLabel("数据来源:"), row, 0)
+        self.detail_source = QLabel("Win32 API + WMI")
+        self.detail_source.setStyleSheet("color: #2ecc71; font-weight: bold;")
+        detail_layout.addWidget(self.detail_source, row, 1)
+        row += 1
+        
+        # WMI 错误提示
+        if self.wmi_error:
+            error_label = QLabel(f"⚠️ {self.wmi_error}")
+            error_label.setStyleSheet("color: #e74c3c; font-size: 9px;")
+            detail_layout.addWidget(error_label, row, 0, 1, 2)
+        
+        detail_content.setLayout(detail_layout)
+        detail_scroll.setWidget(detail_content)
+        
+        detail_group_layout = QVBoxLayout()
+        detail_group_layout.addWidget(detail_scroll)
+        self.detailed_group.setLayout(detail_group_layout)
+        
+        self.main_layout.addWidget(self.detailed_group)
+        
+        # 添加弹性空间
+        self.main_layout.addStretch()
+    
+    def toggle_detailed_info(self):
+        """切换详细信息显示"""
+        self.detailed_visible = not self.detailed_visible
+        self.detailed_group.setVisible(self.detailed_visible)
+        
+        # 获取当前屏幕尺寸
+        screen = QApplication.primaryScreen().geometry()
+        
+        # 更新按钮文字和窗口大小
+        if self.detailed_visible:
+            self.title_button.setText("👁️ 电量守望者  ▲")
+            self.setFixedSize(380, 550)
+        else:
+            self.title_button.setText("👁️ 电量守望者  ▼")
+            self.setFixedSize(340, 270)
+        
+        # 重新计算右下角位置
+        x = screen.width() - self.width() - 20
+        y = screen.height() - self.height() - 50
+        self.move(x, y)
+    
+    def update_battery_info(self):
+        """更新所有电池信息"""
+        try:
+            # 更新时间日期
+            self.datetime_label.setText(get_current_datetime())
+            
+            # ===== Win32 API（关键信息） =====
+            status = get_power_status()
+            if status:
+                percent = status.BatteryLifePercent
+                if percent != 255:
+                    self.percent_label.setText(f"{percent}%")
+                    self.progress.setValue(percent)
+                    if percent <= 20:
+                        self.progress.setStyleSheet("QProgressBar::chunk { background: #e74c3c; border-radius: 4px; }")
+                    elif percent <= 50:
+                        self.progress.setStyleSheet("QProgressBar::chunk { background: #f39c12; border-radius: 4px; }")
+                    else:
+                        self.progress.setStyleSheet("QProgressBar::chunk { background: #2ecc71; border-radius: 4px; }")
+                else:
+                    self.percent_label.setText("未知")
+                
+                acline = status.ACLineStatus
+                battery_flag = status.BatteryFlag
+                
+                if acline == 1:
+                    self.power_status.setText("🔌 交流电供电")
+                    self.remaining_time.setText("正在充电")
+                else:
+                    if battery_flag & 2:
+                        self.power_status.setText("⚡ 正在充电")
+                    elif battery_flag & 4:
+                        self.power_status.setText("✅ 完全充满")
+                    elif battery_flag & 8:
+                        self.power_status.setText("⚠️ 电量低")
+                    else:
+                        self.power_status.setText("🔋 使用电池")
+                    time_text = format_remaining_time(status.BatteryLifeTime)
+                    self.remaining_time.setText(time_text)
+            
+            # ===== 更新详细信息（如果可见） =====
+            if self.detailed_visible and self.battery_info and not self.wmi_error:
+                self.detail_manufacturer.setText(self.battery_info.get('manufacturer', '未知'))
+                self.detail_name.setText(self.battery_info.get('name', '未知'))
+                self.detail_chemistry.setText(self.battery_info.get('chemistry', '未知'))
+                
+                # 设计容量
+                design = self.battery_info.get('design_capacity', 0)
+                if design and design > 0:
+                    self.detail_design_cap.setText(f"{design} mWh ({design/1000:.1f} Wh)")
+                else:
+                    self.detail_design_cap.setText("未知")
+                
+                # 满充容量
+                full = self.battery_info.get('full_capacity', 0)
+                if full and full > 0:
+                    self.detail_full_cap.setText(f"{full} mWh ({full/1000:.1f} Wh)")
+                else:
+                    self.detail_full_cap.setText("未知")
+                
+                # 电池健康度
+                design_val = self.battery_info.get('design_capacity', 0)
+                full_val = self.battery_info.get('full_capacity', 0)
+                if design_val and design_val > 0 and full_val and full_val > 0:
+                    health = (full_val / design_val) * 100
+                    if health > 100:
+                        health = 100
+                    self.detail_health.setText(f"{health:.1f}%")
+                    if health >= 80:
+                        self.detail_health.setStyleSheet("color: #2ecc71; font-weight: bold;")
+                    elif health >= 60:
+                        self.detail_health.setStyleSheet("color: #f39c12; font-weight: bold;")
+                    else:
+                        self.detail_health.setStyleSheet("color: #e74c3c; font-weight: bold;")
+                else:
+                    self.detail_health.setText("未知")
+                
+                # 设计电压
+                voltage = self.battery_info.get('design_voltage', 0)
+                if voltage and voltage > 0:
+                    self.detail_voltage.setText(f"{voltage} mV ({voltage/1000:.2f} V)")
+                else:
+                    self.detail_voltage.setText("未知")
+                
+                # 预估剩余电量
+                est_charge = self.battery_info.get('estimated_charge')
+                if est_charge is not None and est_charge > 0:
+                    self.detail_estimated.setText(f"{est_charge}%")
+                else:
+                    self.detail_estimated.setText("未知")
+                
+                self.detail_serial.setText(self.battery_info.get('serial', '未知'))
+                self.detail_device_id.setText(self.battery_info.get('device_id', '未知'))
+            
+        except Exception as e:
+            print(f"更新出错: {e}")
+    
+    def closeEvent(self, event):
+        """关闭事件"""
+        self.timer.stop()
+        event.accept()
+
+
+def main():
+    """程序入口"""
+    app = QApplication(sys.argv)
+    app.setStyle('Fusion')
+    app.setFont(QFont("Microsoft YaHei", 9))
+    
+    window = EyeOnPower()
+    window.show()
+    
+    sys.exit(app.exec_())
+
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..fddd2dd
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 DVS (dvs-dvsxt)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0e8809f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,82 @@
+# 🪫 EyeOnPower — Battery Monitor
+
+> A real-time **Windows battery level monitor** that displays battery percentage, charging status, remaining time, and current date/time in a always-on-top corner widget.
+
+**EyeOnPower** is a lightweight desktop widget that sits in the bottom-right corner of your screen, showing your battery level at a glance. It supports expanding/collapsing detailed battery info, and toggling window always-on-top.
+
+---
+
+## ✨ Features
+
+| Feature | Description |
+|---------|-------------|
+| 🔋 **Real-time Battery %** | Live battery percentage display with large font & progress bar |
+| 🔌 **Charging Status** | AC power / charging / fully charged / low battery indicators |
+| ⏱️ **Remaining Time** | Estimated remaining battery life (hours & minutes) |
+| 📅 **Date & Time** | Current date, weekday, and time always visible |
+| 🔍 **Detailed Info** | Expandable battery details (manufacturer, capacity, health, voltage, serial...) |
+| 📌 **Always-on-Top** | Toggleable window pinning |
+| 🔗 **Dual Data Source** | Win32 API (`GetSystemPowerStatus`) + WMI (`Win32_Battery`) |
+
+### Detailed Battery Info (expandable)
+- Manufacturer / Battery name
+- Chemistry type (Li-ion, Li-polymer, etc.)
+- Design capacity & full charge capacity (mWh / Wh)
+- **Battery health %** (full/design capacity ratio, color-coded)
+- Design voltage (mV / V)
+- Estimated charge remaining
+- Serial & Device ID
+
+---
+
+## 🚀 Quick Start
+
+### Prerequisites
+- Windows (laptop / notebook with battery)
+- Python 3.7+
+
+### Install & Run from Source
+
+```bash
+# Install dependencies
+pip install PyQt5 wmi
+
+# Run
+python EyeOnPower.py
+```
+
+### Run the Compiled EXE
+Just double-click `EyeOnPower.exe` — no Python required.
+
+---
+
+## 🎮 Usage
+
+- **Title bar button** (`👁️ 电量守望者`): expand / collapse detailed battery info
+- **Pin button** (`📌 置顶`): toggle always-on-top
+- Widget automatically stays in the bottom-right corner
+
+---
+
+## 📦 Project Structure
+
+```
+EyeOnPower/
+├── EyeOnPower.py    # Main program (PyQt5 battery monitor)
+├── EyeOnPower.exe   # Compiled executable (no Python needed)
+└── README.md        # This document
+```
+
+---
+
+## 📄 License
+
+This project is licensed under the **MIT License**. See [LICENSE](LICENSE) for details.
+
+---
+
+## 🙏 Note
+
+> ✓ The widget is **always-on-top** by default, so it stays visible above other windows.
+> ✓ Low battery warning: progress bar turns **red** at ≤20%, **orange** at ≤50%, green otherwise.
+> ✓ Battery health is color-coded: **green** ≥80%, **orange** ≥60%, **red** below.