How to find out how long your Android smartphone really lasts
That is why here we'll show you a way to find out the actual number of days and hours that your phone will last you. Doing so is actually extremely simple, but it does take some time.
‘battery loggers’ that record every single change in your battery status, and can tell you the exact number of hours (or, hopefully, days) between charges. We have picked the Battery Log app, developed by Hwang Tae-rok, as it proved reliable and runs quietly in the background. It’s a free application, so all it takes is hitting the link below to download it from the Google Play Store directly to your device.
|Developer: Hwang Tae-rok||Download: Android|
|Category: Tools||Price: Free|
We said this is simple, but it takes some time, so the next thing you need to do is just keep using your smartphone like you normally do, with one exception. Try to use your device from fully charged to fully drained, without intermittent charging. You can do this once, or for more reliable data - use your phone like this for around a week (set a reminder to check the battery log after that). In the meantime, the battery logger will run in the background and gather valuable data.
After that week passes and your reminder goes off, you need to do some work, and that would be the final step. Open the Battery Log app, tap on “Log Info (List)” and look for the times when your phone battery was at its peak, and the times when it was at its lowest. You’ll end up with something like this:
12:01:15 100% 27.8C 4268mV Unplugged - That's the number you are looking for!
11:49:23 100% 27.7C 4333mV FULL
08:46:38 0% 20.6C 3440mV Use - That's the number you are looking for!
22:46:30 96% 17.7C 4270mV Unplugged - That's the number you are looking for!
You now have your precious real battery life use numbers! Just calculate the hours that your phone lasted from ‘Unplugged’ to ‘Plug (AC)’ or ‘0%’, and you have your battery life. In our case, we used the Samsung Galaxy Note 3 for exactly 28 hours and 59 seconds, or 1 full day and 4 hours on January 28th, and for 1 day 10 hours and 8 seconds on January 27th. That brings our average use to around 31 hours, or 1 day and 7 hours, so we - with our unique usage - can expect somewhere between a day and a day and a half of real use before we get to the charger.
And what about you, how long does your phone really last?
1. tech2 (Posts: 2061; Member since: 26 Oct 2012)
10. hurrycanger (Posts: 1123; Member since: 01 Dec 2013)
The files are no longer there. Did you delete or move them? -_-
11. tech2 (Posts: 2061; Member since: 26 Oct 2012)
Sorry, I don't know how did that happen. Anyways, it was
1 day 14 hours with 1% remaining.
The display time was 5 hours 46 minutes :)
13. hurrycanger (Posts: 1123; Member since: 01 Dec 2013)
That's impressive. Were you home the whole day that day or were you also driving around and were on 4G? Just curious.
14. tech2 (Posts: 2061; Member since: 26 Oct 2012)
Not on 4G but being weekend I was out and about most of the day. Importantly, I was running Juice Defender (similar to battery doctor), if you're familiar with it.
2. NokiaFTW (Posts: 2023; Member since: 24 Oct 2012)
Hey Victor, does this also work for tablets?
3. networkdood (Posts: 6267; Member since: 31 Mar 2010)
I went four days on one charge on my Nexus 5, once...using Bricked Hammerhead kernel.
5. jcoberg10 (Posts: 110; Member since: 30 Oct 2009)
in the battery settings of android it already provides this info.
6. E.S.1 (Posts: 289; Member since: 14 Sep 2013)
Or you can get the LG G2 and not worry about battery life.
8. pyradark (Posts: 772; Member since: 10 Jun 2012)
But g2 has no microsd
instead I can bring power bank!!
9. andynaija (Posts: 468; Member since: 08 Sep 2012)
What does a microSD have to do with anything?
12. kumarslvr (Posts: 2; Member since: 26 Mar 2013)
Battery is the last thing on my mind when travelling with my moto g, it charges faster and lasts really long.. I get at least 30% battery left when i plug it in to charger at night usually even under heavy usage, like using Spotify and YouTube while travelling... Its a breath of fresh air moving from my galaxy s2, which had terrible battery life, had to carry a spare battery everywhere
15. williamdroid (Posts: 125; Member since: 19 Jan 2014)
I can relate. My Galaxy S2 had horrible battery life. And after about a year it wouldn't last me a day. Had to buy an extended battery (@4100mah) to help me with the fone for another year till i upgraded. My Note 3 gets me through 2 days.