Battery drain even with screen brightness down

[andre_scb]

Hello.
First sry about my english and let me just say im new in the forum and this is my first android phone .
I know smartphones battery is a huge problem nowadays and i think my battery is draining a little bit fast as should be, so i want your opinion.

btw sry but my phone is in Portuguese but i think you can understand by looking at icons.
So my screen is taking 38% battery and i have brightness all way down, is this normal?
aditional info:
Location: off
GPS: off
Bluetooth: off
wiffi: only turn on when rly need(youtube, surfing internet etc)
mobile data: off
sync: only gmail google+ and contacts
Power saving mode: on
and i have also Juice defender
Thx for your patience.

 

[exninja]

Looks pretty dang good to me! Which phone is that? It sleeps really well. Yeah, that's pretty standard battery usage for the screen, even with the brightness down. In general, esp compared to my Nexus 5, if you've still got 40% battery left after two days then you're doing well. Having that good signal all the time helps, too.

 

[andre_scb]

Looks pretty dang good to me! Which phone is that? It sleeps really well. Yeah, that's pretty standard battery usage for the screen, even with the brightness down. In general, esp compared to my Nexus 5, if you've still got 40% battery left after two days then you're doing well. Having that good signal all the time helps, too.

Hello and thank you for the fast reply
my phone is the brand new Vodafone Smart 4 Turbo.
I asked about screen because i have seen the same graphic in others forums and their screen was taking 13%!!!! and i thought something was wrong with my phone

 

[andre_scb]

Btw what means that colours in mobile network signal? i have half bar with 1 colour and other half with other.

 

[Hadron]

Green = strong signal. Grey = not so good.

But while generally weaker signal = more drain, most of your drain is coming from when the phone is in use.

 

[andre_scb]

Green = strong signal. Grey = not so good.

But while generally weaker signal = more drain, most of your drain is coming from when the phone is in use.

well yesterday i changed network from 4G to 2G because my 3G/4G signal is weak, that may explain why half bar is grey and other is green but it seems that my battery drains faster when bar is green(2G) than grey

 

[John Bean]

I asked about screen because i have seen the same graphic in others forums and their screen was taking 13%!!!! and i thought something was wrong with my phone

The numbers don't mean what you think they do.

For example, if you turn on the phone but don't use it the screen will be using most of the power, so the percentage it shows will be high. If you use a lot of power-hungry apps the screen will show a lower number - but only because it's a percentage of the total. The actual power used by the screen is unchanged but the percentage could be almost anything, depending on how the phone is being used.

Your usage appears to be quite light so I'd expect the screen to be the highest percentage of the overall power, so nothing at all to worry about

 

[andre_scb]

The numbers don't mean what you think they do.

For example, if you turn on the phone but don't use it the screen will be using most of the power, so the percentage it shows will be high. If you use a lot of power-hungry apps the screen will show a lower number - but only because it's a percentage of the total. The actual power used by the screen is unchanged but the percentage could be almost anything, depending on how the phone is being used.

Your usage appears to be quite light so I'd expect the screen to be the highest percentage of the overall power, so nothing at all to worry about

Thank you its my first smartphone, so i was used to my battery last very long.
yes thats what happen, i usualy turn on phone to see sms and write some and i turn off screen

 

[andre_scb]

just curious, how much your battery usually last? heavy use and normal use.

 

[itsallgood]

6654412[/URL]]just curious, how much your battery usually last? heavy use and normal use.

Hello and welcome to the Android Forums. Looking at your stats, your battery drain is quite good. To answer your question, I'm a moderate to heavy user with about 3 hrs on screen time and can get up to 15 hrs. usage on a single charge w around 40% battery left. (If I don't play any 3D gaming.) I do stream about an 1 hrs. worth of music though.

 

[andre_scb]

Well, did you just say little bit of fast ?? I don't think that's fast instead of it I would say your battery is performing really well out there ! You are active for more than a day and I guess just by looking at the screenshot I would say you can last a day more with it !

Well my battery its still 19% from that screenshot(3days 12hr 24s).
Like i said, its my first smartphone, i was used to my battery last 5days or more.
The battery its not the best(1800 mAh) but its running KitKat version so i guess its well optimized

 

[John Bean]

It's not at all clear to me why you would want/need a single charge to last more than a day in normal circumstances; even when there is no mains electricity there are lots of portable charging options that can keep you going for weeks, recharging daily.

I've never been in a situation when I couldn't recharge my phone daily. When I go to bed the phone goes on charge as my bedside clock

 

[andre_scb]

It's not at all clear to me why you would want/need a single charge to last more than a day in normal circumstances; even when there is no mains electricity there are lots of portable charging options that can keep you going for weeks, recharging daily.

I've never been in a situation when I couldn't recharge my phone daily. When I go to bed the phone goes on charge as my bedside clock

i thought that recharging battery every day or many times a day would effect battery life time.
or doesn't apply to smartphones?

 

[John Bean]

Nothing much to do with whether it's a smartphone, all to do with the battery chemistry.

All modern phones (and lots of other things) use Lithium Ion batteries, which liked to be charged little and often and can actually be damaged by excessive discharge - known as "deep discharge". They don't like being overcharged either but the phone itself will prevent this from happening, no matter how long it is left plugged in.

So for best Li-Ion battery life recharge it often and don't allow the charge level to get too low - which is the exact opposite advice given for many older rechargeable battery types.

 

[andre_scb]

Nothing much to do with whether it's a smartphone, all to do with the battery chemistry.

All modern phones (and lots of other things) use Lithium Ion batteries, which liked to be charged little and often and can actually be damaged by excessive discharge - known as "deep discharge". They don't like being overcharged either but the phone itself will prevent this from happening, no matter how long it is left plugged in.

So for best Li-Ion battery life recharge it often and don't allow the charge level to get too low - which is the exact opposite advice given for many older rechargeable battery types.

Mine uses Li-Poly battery...whatever that means

 

[John Bean]

"Lithium Ion" is a broad category that includes "Lithium Polymer". The same charging guidelines apply to yours

"Charging Li‑ion polymer, also referred as Li-polymer, is very similar to a regular lithium-ion battery and no changes in algorithm are necessary. Most users won

 

[andre_scb]

"Lithium Ion" is a broad category that includes "Lithium Polymer". The same charging guidelines apply to yours

"Charging Li‑ion polymer, also referred as Li-polymer, is very similar to a regular lithium-ion battery and no changes in algorithm are necessary. Most users won’t even know if their battery is Li‑ion or Li‑polymer. The word “polymer” has been used as promotional hype and does not reflect special attributes other than to know that the battery is built in a different way to a standard Li-ion." - From Charging Lithium-Ion Batteries - Battery University

ok, i dont know if this is relevant or not but i only charged my phone twice since i got it, i have read somewhere in the internet that only after 1 month the battery reach max performance, is this true?

 

[John Bean]

No, it's not true.

What is true is that the battery may not reach optimum performance until it's been charged a couple of times to allow the charging algorithm in the phone to calibrate itself to the the battery's actual capacity. Until it knows how much charge is required it will deliberately undercharge for safety reasons.

There is no specific time period involved. If you've done two (full) charge cycles I'm pretty confident that the battery will now be performing as well as it ever will

 

[Dpadre]

That Screen shot looks like the battery is doing good!!!

From what I understand from listening to my tech shows is that new Lithium ion batteries are made to perform a certain amount of charges, say 500 cycles for an example. So if you only use half the battery to 50% before you stick it on the charger, then it’s only a half of a cycle. There is no reason to discharge the battery 100% unless you just don’t have an option to get to charge it on a long day away. They also say that battery technology allows you to keep your battery on the charger even if it’s 100% charged, it won’t affect the life of the battery either. So, use your battery in whatever manner that fits your lifestyle and don’t fret. Battery technology allows for both running it down 100% and leaving it charged overnight without it exploding, but I wouldn’t suggest putting it under a pillow. I put mine on a charger whenever I possibly can, and when the time comes, you can simply buy a new battery pretty cheap, just make sure you get it from a good supplier made for your phone and it’s battery specs. Hope this helps =)


You may want to go through some of your apps, like email and the weather and only have it check hourly or only when you want it too upon requesting it by opening an app. FaceBook is another. Go through your apps and get to know them and how often they go and look for information in the background. Turn on power saving mode and adjust your screen brightness down. There are lots of little things you will find that affect a batteries life

 

[andre_scb]

That Screen shot looks like the battery is doing good!!!

From what I understand from listening to my tech shows is that new Lithium ion batteries are made to perform a certain amount of charges, say 500 cycles for an example. So if you only use half the battery to 50% before you stick it on the charger, then it

 

[andre_scb]

Well, did you just say draining fast ?? I would say your battery is giving you a perfect Android Smartphone experience what makes me say thing is because you still have 40% of the battery power left to use of that is going to keep you switch on uptil next morning are maximum next afternoon this means you are getting a great backup from your device i.e lasting for two days. And I don't think you can expect much more from a smartphone

thank you,it lasted this long:

i just realize that, i have seen soo much graphs from other people and they dont last even 1 day!!!!
well i dont know what kind voodo they did to my phone since is only a 1800 mAh battery and uses a quad-core processor, maybe the KitKat version is well optimized

 

[Dpadre]

how i do this?

In each app, there should be settings. I got to looking at a few of mine. One weather app has it as refresh interval. In my Gmail under settings then clicking on my email address, there is an option to turn off sync. So to get my mail, I pull down when inside my inbox. I'd have to know what apps you have to fully help. I've noticed some, like The Weather Channel, I could not find a setting for refresh. Anyways, most generally inside the apps under settings. This also helps cut down on data if you are on a fixed data plan.

I have also got to say, one of my biggest battery killers is having location turned on. GPS is a killer, when I use maps in my car, I have to plug my phone in or it will die fast.

If I remember, I once used an app from the chip makers of Snapdragon Qualcomm called Snapdragen Battery Guru. It takes a few days to learn your behaviors and will automatically make changes that will optimize your battery life. Check it out

 

[andre_scb]

In each app, there should be settings. I got to looking at a few of mine. One weather app has it as refresh interval. In my Gmail under settings then clicking on my email address, there is an option to turn off sync. So to get my mail, I pull down when inside my inbox. I'd have to know what apps you have to fully help. I've noticed some, like The Weather Channel, I could not find a setting for refresh. Anyways, most generally inside the apps under settings. This also helps cut down on data if you are on a fixed data plan.

I have also got to say, one of my biggest battery killers is having location turned on. GPS is a killer, when I use maps in my car, I have to plug my phone in or it will die fast.

If I remember, I once used an app from the chip makers of Snapdragon Qualcomm called Snapdragen Battery Guru. It takes a few days to learn your behaviors and will automatically make changes that will optimize your battery life. Check it out

i know this app but when i started using it my battery was draning faster because the app, maybe because was learning but i uninstalled.
And the app need location services and wifi activated.