I am doing a network call every 15 seconds in my app, and if the users device battery percent is lower than 20%, than I would like to do the call every 30 seconds instead. How do I get the user's devices current battery level? Is it possible? Any help would be appreciated.

I am doing a network call every 15 seconds in my app, and if the users device battery percent is lower than 20%, than I would like to do the call every 30 seconds instead. How do I get the user's devices current battery level? Is it possible? Any help would be appreciated.

• javascript
• battery

• Man i don't know whether its done till now or not but I am inspired by the way you are going and considering things. Really appreciate. – geminiousgoel Commented Jun 10, 2017 at 9:35
• I don't want to use up the users battery – KingCoder11 Commented Jun 10, 2017 at 9:35
• up vote from my side. +1 and put it under my favorite. – geminiousgoel Commented Jun 10, 2017 at 9:36
• Thanks, I am still searching on it – KingCoder11 Commented Jun 10, 2017 at 9:36
• I think I found something here, but the battery api isnt supported on many modern browsers, like opera: sitepoint./html5-battery-status-api – KingCoder11 Commented Jun 10, 2017 at 9:40

1 Answer 1

Take a look at the Battery Status API. It doesn't work in all browsers, but it's a start.

For browsers that support it, something like this should work:

navigator.getBattery().then(function(battery) {
  battery.addEventListener('levelchange', function() {    
    // Do stuff when the level changes, you can get it
    // from battery.level
    document.write((battery.level*100)+"%");
  })
  document.write((battery.level*100)+"%");
});