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Cell Signal Some backgrounds as explained by ce4 on the question Does 'poor' reception deplete the battery quicker?: The transceiver circuit is engineered with power saving in mind and will reduce sending power as much as possible if the reception is good. This also reduces the SAR value which is a measurement for exposure of the human body to radiation. ...


71

That recommendation from the seller was true for old batteries, and it seems they still keep saying that to customers! Nowadays, batteries are often Lithium-Ion or Lithium-Polymer and such batteries (as I have read many times and based on my own experience) would be stronger if you charge them often. The first time charging and "wait-until-full-discharge-...


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How can I tell I'm affected? This is probably the first question to those not familiar with this topic. With Gingerbread (Android 2.3) and above, you've got a service aboard helping you to figure out: battery statistics. Though manufacturers tend to place it at different points, it's mostly found in Settings → About the phone → Battery or similar, ...


33

There are so many things one can do I don't wanna repeat here: Remove bad apps, reduce brightness of your dis… ahem, said: not repeat, OK. But if you think about what you could turn off/down and what effect it offers: There's a nice table to be found at the German technology site Heise, titled Energiesparplan (Google Translate Version here). They slightly ...


30

Enabling USB debugging essentially starts up the adb daemon on your device, which allows it to communicate with adb on another device to enable debugging commands. It's used when developing and debugging applications, and allows you (primarily) to: Transfer data between a computer and your device (both ways) Read log data easily from logcat Debug ...


27

Li-ion does not need to be fully charged, as is the case with lead acid, nor is it desirable to do so. In fact, it is better not to fully charge, because high voltages stresses the battery. Choosing a lower voltage threshold, or eliminating the saturation charge altogether, prolongs battery life but this reduces the runtime. Since the consumer ...


21

Every mobile battery has an inbuilt thermistor, (which is a transducer which varies its resistance with respect to its temperature) with which the charging circuit constantly measures the battery temperature. It can even prevent charging the battery if the temperature reaches dangerous level and by controlling its temperature, the life of battery is ...


18

For easier reference: Source: XDA


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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

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

I assume that you mean on the graph you get if you go to Settings -> About Phone -> Battery Use and tap the graph at the top? I have a signal strength line there, under the battery level graph that has many colours in it that's labelled "Phone Signal" on my device. (full size) The reason it's there is that your signal strength can have a big effect on your ...


17

Modern phones use Li-ion and Li-poly batteries. So the battery life is not affected by whether you charge them at 0% or 90%. It only has a long term effect. Batteries degrade with every charge cycle. A cycle is usually a recharge from below 50%. So charging while the battery capacity is still relatively high has a long term effect of less degradation. ...


17

Yes, it does cost you more power. The transceiver circuit is engineered with power saving in mind and will reduce sending power as much as possible if the reception is good. This also reduces the SAR value which is a measurement for exposure of the human body to radiation. If the reception is bad sending signal strength has to be adjusted accordingly. ...


16

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 ...


15

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 ...


14

Cell signal To add to ce4's answer: You can check that for yourself. If you take a look at your battery stats (they are always at a little different place in the system menu: Sometimes in the main menu, other times under phone info), it lists the apps which used most of your battery. One of the highest consumers in there is most likely your display -- and ...


13

What drains... my special. Here some data samples, based on a Motorola Droid: +--------------------+----------+ | Mode | Energy | +--------------------+----------+ | Bluetooth receive | 751 mW | | Bluetooth send | 487 mW | | Bluetooth standby | 2,8 mW | +--------------------+----------+ So if you use BT quite regularly (e.g. to ...


13

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 ...


12

I usually get by the day by carrying a USB charger since I always have my laptop or other computers around me. Some people get through by buying a second battery pack or a thick extended battery. Any apps that syncs every 15 minutes is battery sucker, since it prevents the phone from sleeping. Syncing every hour or so shouldn't affect battery by much. If ...


12

If you look at this video from the Google I/O conference and the slides you can see that they show how much WiFi, the CPU, screen, GPS, accelerometer etc. use in a device. Here is the video and the slides. A quick summary in case the links go down: This shows the amount of battery used by the components in milliamps (mA). Another unit needed is milliamp ...


12

once or twice a month a full battery drain and then a 100% charge helps increase the battery life That is incorrect, a full discharge is never beneficial to LiON battery capacity. The battery life of a LiON battery is dependant mostly on temperature, discharge rate, and age. In fact, low charge state actually is harmful to LiON battery capacity; although ...


12

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 ...


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 ...


11

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”: ...


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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 ...


10

Full discharges put a strain on the battery. This topic might be of some help to you (the first answer specifically).


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The only way rooting can gain you battery time is if you can uninstall an app that's using a lot of power, and which you can't uninstall without rooting (i.e. it's something that shipped with the device). I don't know what is on your device, but judging from what I've seen on my Droid 3, there's not likely to be any noticeable change in battery life. On the ...


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

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 ...


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