28

Yes, it's possible if your device is rooted running Advanced Charging Controller-Acc Magisk module and device kernel supports (see currently known list at the end of answer) Battery Idle Mode: To activate this feature at a user defined battery level. And/Or Custom Charging Voltage Limits: Activates this feature at a user defined voltage level. This ...


20

In the comments to linked answer, it was brought out that batteries are not allowed to stay at 100% charge since it is harmful to the battery and the battery % rapidly drops to around 90% as explained in this XDA post. This is a precaution implemented by OEMs ( though not sure if all OEM's do that) Related to this is battery longevity on terms of Voltage per ...


19

Fast answer: Nes. Yo. Well, it all depends... on how you use your device. Detailed answer Self-Experiment I just did a self-experiment to find out. Until now, I had all my devices fixed to 2G -- as that should "save juice", like the question suggests. So for 4 days now, I have 3G enabled. Surprisingly: No difference which could not be explained by ...


18

For easier reference: Source: XDA


18

Of course your device requires power to run – whether you've set it for charging or not. Question is: Does it use more power than it gets by charging? Which depends on multiple factors: Your "power source". USB only charges with 500 mA (USB2) resp. 900 mA (USB3), A/C with up to 2 A. Your devices power consumption. Depending on what it's doing. Display ...


17

It's a scam. Android app cannot access physical battery directly. The battery file is just an interface for Android with value provided by the battery's sensor. Again, a sensor only reads data; it cannot write/modify anything. An article on Android Police explained this very well, Battery not working correctly? Well, just defrag it! It's all so obvious now. ...


17

There now is a hardware+app solution for that, it's called Chargie. https://chargie.org Basically, Chargie is a Bluetooth switch that is linked to an app on your phone. You set the desired level of charging, the app runs in the background and stops the charge at the percentage you set. *disclosure: I am the CEO of Lighty Electronics, we have developed ...


15

There's usually a wrong conception on how these "numbers" should be interpreted. For example, your screenshot shows "Screen: 3%". So what does that mean? a. the screen ate 3% of your battery, thus reducing it e.g. from 100% to 97% b. the screen was responsible for the overall discharging by 3% – in this case, it "ate 1.8% juice" Hint: it's not a) – so your ...


14

Short Answer From battery health point of view, Qualcomm Quick Charge 3.0 is comparatively better than Qualcomm Quick Charge 2.0, since power used for charging is better controlled, resulting in lesser heat Quick review of concepts (optional read) Essential concepts are summarised here in bullet form. Some of these have been elaborated in How does Fast ...


12

Fast Charging can be achieved in two ways Hardware based Charging Qualcomm- Qualcomm Quick Charge 2.0 and Qualcomm quick Charge 3.0. Also see Fast Charging by Qualcomm 3.0- impact on battery?. This is the most popular, adopted by OEMs under various brand names Type C USB Charging- USB Type C Charging explained. Also see Android phone “charging slowly”: ...


12

Okay.. Got it :) The first thing to note is on Honor 6, my previous device , there was a single file I could play around with to stop charging automatically On Moto X play, there are two distinct files - one for disconnecting the charger and other for removing charging symbol ( In other words, you could stop charging and still have the charger connected ...


11

Those battery saver apps probably work by killing tasks, lowering brightness, disabling data or internet connection, and several other things. Those little things will definitely save battery one way or another. Why doesn't Android do it by default? I don't know; you'd have to ask the Android developers that. If Android did what battery saver apps do, they'...


11

If you look at my previous answer to a similar question you can see that by Google's testing utilising WiFi will use more battery than using GPS. This seems broadly in line with the figures given in an answer mentioned in the comments. However as Izzy mentions these are ballpark figures and actual consumption is dependant upon what exactly the phone is ...


10

Tests done to arrive at the answer posted below were correct but the interpretation of results was erroneous on my part. This was validated by two sources including Battery University and based on the correct interpretation and additional inputs a separate answer has been posted. This also helps in readability and understanding Power is consumed by the ...


10

Many ways - all of course, need root. Without root, it's not possible and you can only be notified either by automation or using an app as suggested in Chang's answer Battery Charge Limit from Play Store. If it doesn't work directly, look for help in the XDA app thread. It doesn't trip safety net if you are using Magisk. I use this app currently (Bonus, ...


9

Here are the real expert answers from Electrical Engineering, our sister site: Effects of smartphones always connected to AC power? Not directly related, but also a nice read: Tricking the charging circuit considered harmful TL;DR: The charging circuit is safely engineered to be connected to the charging circuit 24/7.


9

Turning the tablet off at night will most likely extend its life, but this defeats the purpose of having a tablet, since a key feature of the tablet is instant power-on from standby. Generally, there are two things that drain the battery of any device: the display (when it's turned on), and any wireless communications (3G, WiFi, etc). If you really want to ...


9

The first thing to remember is that when an app runs, it doesn't actually do computation for the whole time it's running: most of the time it's idle, waiting for data to arrive over the network, or while you're looking at it on the screen. Only very badly-written apps and games keep the CPU active the whole time they're running: this runs the battery down ...


9

No. Bad cellphone coverage decreases battery life because the phone has to transmit with more power to be able to communicate back to the cell tower. It's like when you can barely hear someone hollering at you: you shout louder too to make sure they can hear you. But GPS is a one-way signal: the phone only receives it, it doesn't transmit anything. It doesn'...


9

When you plug your phone into a PC, or other device that communicates with the phone, the phone uses a USB "Data mode", so to speak. In this mode, there is a 500ma maximum draw from the USB port. When you plug your phone into a regular AC wall charger, there is no data connection. The phone then uses whatever amperage is supported by both the phone and ...


9

This is possible on Android, at least on Lollipop. The feature is dependent on the Bluetooth headset sending the battery level in the right format. If the headset supports it, you will see an option in the settings screen for the Bluetooth device. The option will be right above the check-boxes for Call and Media audio. If you don't see this option, then the ...


9

can I have access somewhere and see what Google is collecting about my own usage and my own battery performance? Yes. Click on My activity to see what information is collected by Google regarding your app activities (if you didn't disable it). The data is just about how many times and when you used an app (unless Google chose not to reveal all the data ...


8

It seems like others have had this problem as well: http://www.reddit.com/r/GalaxyNexus/comments/19y0a9/galaxy_nexus_screen_turn_on_durring_lock_screen/ http://productforums.google.com/forum/#!topic/mobile/PA5JZH-Oj4o http://code.google.com/p/android/issues/detail?id=39625 It is a bug in Android 4.2, specifically with the Samsung Galaxy Nexus. I imagine ...


7

The Mediaserver process scans your device for media files to add to your library. However, the 2012/12/12 (perhaps some more) gapps version is broken and gets stuck in an infinite loop on unfamiliar files on your phone. This directly translates to battery drain and is bad for the lifetime of your battery and other phone components. When running your phone ...


7

Killing all running apps didn't solve the problem, nor did disabling the automatic sync for Google account items like videos/photos (which I heard suggested for a similar battery issue). What did work was simply rebooting the device by holding the power button and picking shut down. After rebooting Mediaserver no longer appears to use much of my battery in ...


7

Google+ Instant Upload offers a setting to allow uploads only when the charger is connected. Facebook's instant photo upload does not offer such an option. The Gallery is linked to your Google Account and thus to Picasaweb. However, there's no option within the Gallery app to restrict data transfer only when the charger is connected. Carbonite recently ...


7

Turn off 3G when I've got WIFI on. I only need the mobile networks for phone calls when I've got wifi so I would prefer not to have 3G on. 3G and mobile data are two separate things. When wifi is enabled, mobile data no longer goes through the cellular connection, but it does remain connected to the 3G network (otherwise it couldn't receive calls or SMS/MMS)...


7

Performance has nothing to do with battery voltage. The reason is that the flash memory is "worn" and therefore slower and less responsive. My Nexus 7 (1st generation) is also very slow now and I have almost no apps on it. You can read more here: Why Android Phones Slow Down Over Time, part "No Solid-State Drive TRIM" No Solid-State Drive TRIM The ...


7

Firstly one needs to understand C-rate or charge rate. Quoting from the linked article C-rate is a measure that governs at what current a battery is charged and discharged. At 1C, a battery rated 1,000mAh charges at a current of 1,000mAh. In an ideal world the battery would be fully charged in 60 minutes. At 1C, the same battery discharges at 1,000mA. Li-...


7

Discharging is the opposite of charging. When you charge some electric component, such as a battery, you are storing potential electric energy in it. When you discharge that battery, you are reversing the charging process and using the potential electric energy to drive other electric components. Don't be scared, most of the time you are discharging your ...


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