Battery Status API

// Get battery status (if supported)
async function checkBattery() {
  if ('getBattery' in navigator) {
    try {
      const battery = await navigator.getBattery();
      
      // Battery level (0 to 1)
      const level = Math.floor(battery.level * 100);
      console.log('Battery Level:', level + '%');
      
      // Charging status
      console.log('Charging:', battery.charging);
      
      // Time until fully charged (seconds)
      console.log('Charging Time:', battery.chargingTime);
      
      // Time until battery empty (seconds)
      console.log('Discharge Time:', battery.dischargingTime);
      
    } catch (error) {
      console.error('Battery API error:', error);
    }
  } else {
    console.log('Battery API not supported');
  }
}

checkBattery();

// 🎯 Note: Removed from Chrome/Edge for privacy reasons

// Monitor battery changes
async function monitorBattery() {
  if ('getBattery' in navigator) {
    const battery = await navigator.getBattery();
    
    // Listen for level changes
    battery.addEventListener('levelchange', () => {
      const level = Math.floor(battery.level * 100);
      console.log('Battery level changed:', level + '%');
      
      // Show warning if low
      if (level < 20 && !battery.charging) {
        alert('Low battery! Consider saving your work.');
      }
    });
    
    // Listen for charging status
    battery.addEventListener('chargingchange', () => {
      if (battery.charging) {
        console.log('Device is charging');
      } else {
        console.log('Device is not charging');
      }
    });
    
    // Charging time changed
    battery.addEventListener('chargingtimechange', () => {
      console.log('Charging time:', battery.chargingTime);
    });
    
    // Discharge time changed
    battery.addEventListener('dischargingtimechange', () => {
      console.log('Discharge time:', battery.dischargingTime);
    });
  }
}

monitorBattery();

// 🎯 Could adjust app features based on battery