Battery monitor and it's expectations on Passport
I haven't yet seen a thread clarifying or discussing the battery monitor app on specifically on Passport yet. Only threads asking or saying what's going on with my battery life.
So here's a little bit about the app.....
First off, battery monitor should only be used as a very general tool to determine the amount of time life on a battery. It can not be used as an accurate tool to determine ones battery time left.
I know a little miss leading to put such an app onto a device, unfortunately with this app it's true.
Reason behind that is, it's output is based on device usage versus percentage of battery left with a few other variables. And the formula that figures the percentage seems to have a small window of time with very little give in variables.
For example, someone can have 100% charged battery. For the first 30 mins of that charge. You could browse the web, listen to so music, and text some friends. Then check the time left on the app and it's going to read low, let's say 6 hours left. Set the phone down for three hours then come back and check the time left on the battery. You'll notice that the time has increased from the 6 hours left to a higher time of 12 hours for example, that's if you don't have battery draining apps running in the background.
The same works in reverse,
Have 100% battery and don't use the phone for the day.
For example, after 12 hours of standby you may notice you have 24 hours left in the monitor app. But start some heavy use on the phone, for about 30 minutes, and for example, you'll see that 24 hours you had prior to the heavy use now dropped to 6 hours left.
Now some say, "I've only used the phone for 30 mins and my monitor is reading 10% or 20%".
That percentage is from the point in time that the app started to keep record of usage.
So let's say you turn on the phone, use it to read some news articles for 2 hours. The monitor is on, but reading the articles doesn't use many other resources of the phone because once you have the pages loaded they are there on the screen. Once your done reading, you close the articles and set the phone aside. Come back 30 minutes later and check the monitor app.
You will see the monitor is still one of the highest battery draining items on the phone because the time the monitor was used is still higher than the 30 minutes down time it had.
Now if you turn off the monitor and wait 6 hours after those 2 hours of article reading you'll notice the percentage to be much lower on the monitor percentage. That's because the run time is now less than the down time. So it appears in the app that the monitor is not a battery draining cause.
If any one remembers or ever had an Android, they might recall that Androids use to have the same problem with most of their battery monitoring apps. And had many discussions on how to get a more reliable monitoring app. It seems on Passport the same is happening.
"I reject your reality and substitute my own!" from Adam Savage