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ive had a nexus one since the day it came put and since upgrading to froyo and now 2.2.1 my battery lifes been horrible. my normal settings are no wifi or bluetooth on. no sync. im running uv kernels and my battery life is still horrible. i recently sent my nexus to htc thinking it was a hardware problem. the new nexus dies just as fast. ive almost literally looked at every battery life thread and tried tips and still doesnt help. my phone doesnt last 8 hours let alone 24 hours. ive checked my battery use and the only thing over 10 percent is my display which im using auto brightness. any help would be so greatful because ive tried everything i know how to do
Did you replace your battery?
Time to replace your battery!!!
tsouza said:
Time to replace your battery!!!
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already replaced the battery before i got the new phone.
Dude same here. It's obvious the N1 is lacking in battery technology. What new phones are you considering?
that's definitely a dead battery, I've got my Nexus One since 2nd March and keep using it till now, still there is 92% of usable capacity.
Check the battery cal thread. We just finally hacked the nexus battery EEPROM chip and can tweak voltage etc. The changes got merged this week. So maybe some hope still...
well these things can definitely kill the battery extremely quickly if you use them a lot.
i personally don't have a problem with the battery life on mine on a normal work day because i only use it probably on average 5-10 min an hour for a 9 hour work day and by then i'm usually at 50-65% battery depending on how much i used my phone.
if you suspect that the phone is the problem and not the battery then try downloading currentwidget its a small widget that will tell you exactly how much power your phone is using in miliamps. it takes about 1 min for it to refresh so it does not work in real time but this is kind of nice because it allows you to see how much power its taking (or receiving if its on the charger) when its in idle
mine usually reads 3-5 mA when i unlock it so that is what its taking when its in sleep mode.
the most i've ever seen it take when draining the battery is about 465mA i would say that the average drain when i'm using it for browsing websites and using simple apps with the screen at half brightness is about 350-400ma or so
one thing is for sure though if you use an N1 heavily it can and will kill the battery in a matter of hours, if i play angry birds for example with my screen on half brightness after a few hours i'm at about 20-30% battery easily and the phone itself is very warm from the constant CPU use.
and btw the bad battery life is the combination of the AMOLED that takes massive power compared to an LCD and the 1st gen Snapdragon CPU clocked at 1ghz, battery life without the screen on and with minimal CPU use like streaming music for example or playing music with BT headphones i can go all day easily. it only drains like 5% an hour maybe a tad more but the difference is that the CPU is not working very hard and the screen is off completely.
AMOLED using more than LCD? What did you smoke mate? ^^
AMOLEDs have been made for low power consumption, especially for black colors...no way it uses more battery than my SLCD variant...
gravufo said:
AMOLED using more than LCD? What did you smoke mate? ^^
AMOLEDs have been made for low power consumption, especially for black colors...no way it uses more battery than my SLCD variant...
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they can take less power with the proper screens yes, they are dynamic in their power consumption like plasma's are in that how much power they use is directly related to what they are displaying and what the brightness (or contrast in the case of plasma's) is set at.
LCD's are predictable and constant with their power drain.
AMOLED's are capable of consuming more power than LCD's of the same size if given the right display material (mostly white, mostly brightly lit content)
considering that most of the websites and even some apps i use on my nexus have white backgrounds it explains why my screen pulls so much power when i'm using it
gravufo said:
AMOLED using more than LCD? What did you smoke mate? ^^
AMOLEDs have been made for low power consumption, especially for black colors...no way it uses more battery than my SLCD variant...
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There was a test done somewhere that showed that all the phones with AMOLED variants did the worst in battery life. Best battery? Droid x
true, white on white, amoled does use more battery...but meh...argh it killed my point xD
haha yeah you're right I guess Websites should have black background and green text, just like my terminal, gmail, etc. meh ^^
Frito11 said:
well these things can definitely kill the battery extremely quickly if you use them a lot.
i personally don't have a problem with the battery life on mine on a normal work day because i only use it probably on average 5-10 min an hour for a 9 hour work day and by then i'm usually at 50-65% battery depending on how much i used my phone.
if you suspect that the phone is the problem and not the battery then try downloading currentwidget its a small widget that will tell you exactly how much power your phone is using in miliamps. it takes about 1 min for it to refresh so it does not work in real time but this is kind of nice because it allows you to see how much power its taking (or receiving if its on the charger) when its in idle
mine usually reads 3-5 mA when i unlock it so that is what its taking when its in sleep mode.
the most i've ever seen it take when draining the battery is about 465mA i would say that the average drain when i'm using it for browsing websites and using simple apps with the screen at half brightness is about 350-400ma or so
one thing is for sure though if you use an N1 heavily it can and will kill the battery in a matter of hours, if i play angry birds for example with my screen on half brightness after a few hours i'm at about 20-30% battery easily and the phone itself is very warm from the constant CPU use.
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that sounds jsut like my phone. 5 to 10 minutes of use an hour and im at 60 percent. that cant be normal! angry birds for 10 minutes is like 8 percent battery loss. like i said i got a new battery for my old nexus one then noticed that the "issue" still existed so i got a new nexus one and my phone still dies rapidly. why is it that some nexus ones are better. i hear people say they get excellent battery life and to me on a brand new nexus one with a uv kernel my battery life is still horrible?
It's normal there is nothing wrong with your nexus one they suck battery if you use them heavily
Sent from my Nexus One using XDA App
With all the fuss surrounding the Nexus launch the one thing that us concerning me in particular is the potentially poor battery life a number of reviewers seem to be be getting at the minute. Whilst I am not expecting ground breaking numbers it would be nice to have a fairly significant increase over the (on the whole pretty poor) battery life of the galaxy nexus.
A new screen shot from over on Android Central however has me fairly optimistic. The admin over their has posted a screen shot where his battery is down to around 15% with approx 3 hours screen time. What's interesting to me is that the screen percentage is only taking up 25% of the overall battery. Now in my experience with changing ROMs/kernels is that screen is usually the largest figure on the charge by a more significant figure than this and most importantly their is very little which can be done to bring it down. As such I am fairly confident that it must be either aspects (android os/kernel/radio) bringing the total battery life down and if these can be lowered by optimising the software (which Google are most likely doing for the ota), we should start to see dramatically increased battery life...
Thoughts?
Sent from my Xoom using Tapatalk 2
i saw in an ars technica (idk how to spell the website on the top of my head) that in their nexus 4 review, battery lasted them throughout the day, and it had extra power left to last through the night with push email and IMs on. also throughout the day, they were sending tweets, sending emails, etc. some heavy load. but once it got to video playback, it went down on the faster side. i didnt think its too bad on video playback, since that screen must need more power, especially since its not an AMOLED type screen. its LCD, so it will require some extra power
Please post your thoughts in one of the existing battery life or review/speculation/opinion threads.
Thanks
Closed
So I would have gotten a Note Pro or a Tab Pro, but those reviews were generally pretty pessimistic about the battery life. The reviews for the new Tab S are a lot more positive about battery. What explains the difference? Just curious.
jjfad said:
So I would have gotten a Note Pro or a Tab Pro, but those reviews were generally pretty pessimistic about the battery life. The reviews for the new Tab S are a lot more positive about battery. What explains the difference? Just curious.
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So, I can answer this at least in reference to the 8.4.
The battery capacity is slightly larger 4900mAh vs 4800mAh. But beyond this, it really depends on how the tablet is used. In amoled screens, pixels are individually lit. That means no power is required for black pixels because the individual LEDs are just off. In the case of the Tab Pro's screen, the LCD has a backlight that covers the entire screen, so basically the same amount of illumination is given to dark pixels as light, which is the reason why the contrast is reduced vs the amoled screen.
A (simplification of a) trade-off here is that at a certain ratio of light to dark pixels, it uses more energy to power an amoled screen vs a backlit LCD at the same brightness. So generally, if you're watching a dark movie using apps with dark backgrounds energy consumption will be lower. The opposite can be said about viewing images with bright vibrant colors. It's really hard to gauge what the net gain or loss is under a normal use scenario, but it seems that we may be able to presume that it is at least slightly more efficient based upon the initial reviews.
I've read some reviews that indicate 12+ hours of use at 50% brightness. My guess is that these things used in the real world would get battery life somewhere between 7 and 9 hours. I have an older Samsung Galaxy Tab 7.7 (AMOLED) and that's roughly what I get.
Wow. Thanks for the explanation. One of the reviews I read where there was a divergent test (web surfing rundown vs video rundown) and the Tab S did *way* better on the video rundown .
So far: 10.5 model, 32GB, initial charge, low brightness (25% or less), lots of video streaming, video downloading, lots of screen use, lots of surfing, lots of wi-fi use, I'm at 8 hours use time with 33% charge remaining.
We would all like infinite battery life but in "real world use", I think this is pretty decent battery life.
TonyBigs said:
So far: 10.5 model, 32GB, initial charge, low brightness (25% or less), lots of video streaming, video downloading, lots of screen use, lots of surfing, lots of wi-fi use, I'm at 8 hours use time with 33% charge remaining.
We would all like infinite battery life but in "real world use", I think this is pretty decent battery life.
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How can you enjoy that at 25% brightness. That kind of defeats the purpose of having a phenomenal display.
xRevilatioNx said:
How can you enjoy that at 25% brightness. That kind of defeats the purpose of having a phenomenal display.
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I enjoy it easily. A phenomenal display does not require "flame thrower brightness". Quite the opposite. I wasn't outside in the blazing sun. Additionally, I've never used monitors, TVs, tablets or phone at 100% or even 50% brightness -- it's just too bright for me, so why waste the battery power? I think people have become acclimated to jacking up the brightness because of poor LCD display black levels and viewing angles. Manufacturers like to cheat with contrast ratios by boosting the backlight because low black levels are so much more difficult and expensive to produce.
Lol 25% brightness? Seriously? Do you use a flashlight?
I'm running about 80% brightness and have had the tablet off battery for about 3 1/2 hours and actually using it for about 2 1/2 hours. I'm now at 48% battery. So real world use at realistic brightness? 6 to 7 hours.
* Caveat. I am confident this will improve a bit as the battery gets broken in.
So far the battery life is bad at best. Third day using this and it's not getting better. 2 hours and 29 minutes of use this morning and I'm down 29%. That's putrid. Normal Web browsing and the tapatalk app. I need root in the worst way. The lag is also pretty bad. I'm not even using touch wiz (Google Now Launcher). If it wasn't for this beautiful screen and weight of this tablet it would be going back.
Sent from my SM-T700 using Tapatalk
I have found that turning the wifi to "only when plugged in" doubles my battery time. I just traded in the 8.4 pro for the 10.5 S and discovered this fact while using the Pro for the last week. I just picked up my 10.5 S tab and have been good battery time since turning the wifi off all the time.
Are you talking about the"keep WiFi on during sleep" setting? I'll try that but it seems like a bug then as that should only apply when charging in sleep.
Sent from my SM-T700 using Tapatalk
Battery life is exactly what people should expect with an AMOLED display. They're poor on whites and excellent on blacks. Whether that's good or bad depends on what ratio of each people view.
http://www.anandtech.com/show/8197/samsung-galaxy-tab-s-review-105-84inch/3
Face it guys. These devices never get anywhere near advertised battery life.
sillyphillie said:
So far the battery life is bad at best. Third day using this and it's not getting better. 2 hours and 29 minutes of use this morning and I'm down 29%. That's putrid. Normal Web browsing and the tapatalk app. I need root in the worst way. The lag is also pretty bad. I'm not even using touch wiz (Google Now Launcher). If it wasn't for this beautiful screen and weight of this tablet it would be going back.
Sent from my SM-T700 using Tapatalk
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Sounds like you have a bad egg. I'm using Nova Launcher too. And it blazing fast! No lag at all. Maybe a small hiccup when downloading files but barely noticeable. Your batter drain is alarming. I'd send yours back cuz that's OBVIOUSLY not normal..
Not when you're 80% brightness. The most I use indoors in 30%. I'll crank it up to show off, or when I'm outdoors.
Sent from my SM-T700 using XDA Premium 4 mobile app
mitchellvii said:
Face it guys. These devices never get anywhere near advertised battery life.
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That's true. But why did all the reviews say it was excellent. Not one bad review. Crazy.
I've found the drain to be about 10% per hour on my 8.4". I'm usually using it set to 25% brightness, which seems to be ideal for any conditions in which you are out of sunlight. The people who are using it at brightness levels of over 50% are the ones who need their eyes checked.
Megalith said:
I've found the drain to be about 10% per hour on my 8.4". I'm usually using it set to 25% brightness, which seems to be ideal for any conditions in which you are out of sunlight. The people who are using it at brightness levels of over 50% are the ones who need their eyes checked.
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I agree on this one, I have the brightness set at 50 % and the display is so bright inside buildings that there is no need to go higher. I don't know what everyone is complaining about, but my battery drain is about 8 - 10 % per hr, normal use, web browsing, video, facebook etc.. I have 8.4 model.
I just like a super bright screen. Can't imagine running this at 25% brightness. What a waste.
mitchellvii said:
I just like a super bright screen. Can't imagine running this at 25% brightness. What a waste.
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Waste of what? If anything above 25% is too bright for someone (eyestrain, preference) then the waste would be increased battery drain.
If burn-in is any cause for concern, keeping the brightness low for the first 50 or so hours of use may reduce the chances of burn-in for the life of the tablet.
More is not necessarily better.
Let's wait to see how the Snapdragon 805 performs, hope it will be even better.
"With all these tests, we could say that those planning to buy the Samsung Galaxy Note 4 with its monster 3,220mAh battery should be relatively pleased. The Note 4 lasted almost 12 hours on the video test at 100% brightness, a bit more when brightness was lowered to standard viewing settings. This places the new model in the top 5 devices with longest battery life in this test. The Note 4 also lasted 7 hours on the WiFi test at max brightness, and a full 1.5 hours longer on standard brightness – again placing the device in the top tier of devices that last longer on this test. On the graphics render loop, the Note 4 lasted 3 and a half hours – this drops the Note 4 to the middle of the pack or better, still a relatively good place for it to be"
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Source: AndroidCommunity
Actually the "standard" brightness should be lower, about 150 cd/m2 or even lower when viewing indoor.
And when watching video I think no way I do not turn on power save (even with web browsing), so the result still can be different.
hung2900 said:
I do not turn on power save (even with web browsing), so the result still can be different.
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Regarding battery, the results will always be different because we all spend different amounts of time on different tasks. This kind of tests is just to give us an idea and compare with other devices doing the same. ☺
I found myself seeking threads in these forums about different ROM's and SOT obtained. The results were way different between different users, some claim to get 2.5h SOT some 5h SOT under normal circumstances.
Under normal circumstances I never get more than 3h and I suspected that my worn battery (598 charge cycles according to "Charge Cycle Battery Stats" app) was far from the original 3000mAh.(Thats a manufacturer stat obtained in perfect conditions, real world must be around 2800mAh)
I needed to measure the capacity left in mAh,so I bought a USB ammeter power meter (Keweisi white digits, but you don't need it, I'll explain later).
Using the Power meter, to measure properly you need to avoid thermal loss and power loss when charging:
- Note 5 completely discharged at 1 or 2% battery left.
- Disconnect the Fast charge option in Android.
- From start to finish keep the note 5 Switched off.
- Use an USB low power charger, mine was charging at 0.8A
Results: 1800mah that's far from the 2800mAh(3000mAh) when new.
(Same test I'm getting 2200mAh out of the original 2800mAh on my old Galasy S5 Neo.)
You don't need USB ammeter, Android has a builtin ammeter calculator(estimation).
Today I depleted the battery (2% left) of my note 5 again (Rom based on Android 7.0) and under battery usage I added all the "Computed Power Usage" in mAh giving the next results:
mAh
557 Cell standby (I worked underground today)
333 Screen 2h53m (30% brightness and auto brightness on)
271 Device Idle
221 chrome
203 Android OS
43 Google Play Serv.
39 Androyd System
27 Youtube
20 Yahoo Mail
20 Wi fi
17 com.android.systemui
Total: 1751mAh
This result shows that the phone itself makes a good estimation of mAh juice available in you battery.
As an anecdote I run the same test that Jerryrigeverything in YT with his Note 5(6 month of use): Playing a 2k video in 100% brightness( auto brightness off) with sound and in Flight Mode(not even wifi). He gets 6h20m, I surprisingly get 6h. But those test are only worth to compare Note 5's
Conclusions(my own and humble): Surprising degradation of my battery, specially compared with the results obtained in my S5 Neo. According to "battery university" (a good scientific source of information about Lithium-Ion) I might have shorten the life of my battery abusing of the fast charge mode.
monkeyisland3G said:
I found myself seeking threads in these forums about different ROM's and SOT obtained. The results were way different between different users, some claim to get 2.5h SOT some 5h SOT under normal circumstances.
Under normal circumstances I never get more than 3h and I suspected that my worn battery (598 charge cycles according to "Charge Cycle Battery Stats" app) was far from the original 3000mAh.(Thats a manufacturer stat obtained in perfect conditions, real world must be around 2800mAh)
I needed to measure the capacity left in mAh,so I bought a USB ammeter power meter (Keweisi white digits, but you don't need it, I'll explain later).
Using the Power meter, to measure properly you need to avoid thermal loss and power loss when charging:
- Note 5 completely discharged at 1 or 2% battery left.
- Disconnect the Fast charge option in Android.
- From start to finish keep the note 5 Switched off.
- Use an USB low power charger, mine was charging at 0.8A
Results: 1800mah that's far from the 2800mAh(3000mAh) when new.
(Same test I'm getting 2200mAh out of the original 2800mAh on my old Galasy S5 Neo.)
You don't need USB ammeter, Android has a builtin ammeter calculator(estimation).
Today I depleted the battery (2% left) of my note 5 again (Rom based on Android 7.0) and under battery usage I added all the "Computed Power Usage" in mAh giving the next results:
mAh
557Cell standby(I worked underground today)
333Screen 2h53m (30% brightness and auto brightness on)
271Device Idle
221chrome
203Android OS
43Google Play Serv.
39Androyd System
27Youtube
20Yahoo Mail
20Wi fi
17com.android.systemui
Total: 1751mAh
This result shows that the phone itself makes a good estimation of mAh juice available in you battery.
As an anecdote I run the same test that Jerryrigeverything in YT with his Note 5(6 month of use): Playing a 2k video in 100% brightness( auto brightness off) with sound and in Flight Mode(not even wifi). He gets 6h20m, I surprisingly get 6h. But those test are only worth to compare Note 5's
Conclusions(my own and humble): Surprising degradation of my battery, specially compared with the results obtained in my S5 Neo. According to "battery university" (a good scientific source of information about Lithium-Ion) I might have shorten the life of my battery abusing of the fast charge mode.
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Same here, the problem is that is quiet impossible to find a genuine battery for replacement. All those on amazon and ebay are crap.
memeliv said:
Same here, the problem is that is quiet impossible to find a genuine battery for replacement. All those on amazon and ebay are crap.
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That's the next step, find a good provider and compare capacities.
What I know so far is that there's 2 different battery models:
EB-BN920ABE The most common, but most reviews complain about being 4 or 5 mm shorter, ...less volume less capacity.
EB-BN920ABA Difficult to find, It seems the original replacement according to this picture:
https://ae01.alicdn.com/kf/UTB8YQ_yanzIXKJkSafVq6yWgXXa0.jpg The original is the right side one.
I found a Canadian provider who seems serious (free of fantasy marketing) who also ships worldwide, it looks like the original, (or a extremely good copy) I'm going to take the risk and try it:
https://www.ebay.co.uk/itm/OEM-EB-BN920ABA-3000mAh-Replacement-Battery-for-Samsung-Galaxy-Note-5-N920-N920A/401346669803?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
I'll post results in about 6 weeks....
monkeyisland3G said:
That's the next step, find a good provider and compare capacities.
What I know so far is that there's 2 different battery models:
EB-BN920ABE The most common, but most reviews complain about being 4 or 5 mm shorter, ...less volume less capacity.
EB-BN920ABA Difficult to find, It seems the original replacement according to this picture:
https://ae01.alicdn.com/kf/UTB8YQ_yanzIXKJkSafVq6yWgXXa0.jpg The original is the right side one.
I found a Canadian provider who seems serious (free of fantasy marketing) who also ships worldwide, it looks like the original, (or a extremely good copy) I'm going to take the risk and try it:
https://www.ebay.co.uk/itm/OEM-EB-BN920ABA-3000mAh-Replacement-Battery-for-Samsung-Galaxy-Note-5-N920-N920A/401346669803?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
I'll post results in about 6 weeks....
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Click to collapse
How did it go? Those eBay batteries tend to be pretty bad in my experience.
Finally someone else is concerned about note 5 battery capacity, i replaced mine with an original one in feb 2018 from a nearby samsung service center for $40, i used Accubattery app to measure and compare the battery capacity of the old vs the new battery.
After two years of usage and fast charging enabled in all of charge sessions, the old battery was giving me 76% (2291 mAh) of the original capacity, while the new one is giving me 89% (2675 mAh) right now, the weird thing is that it was giving me 90% right when i purchased it, i dont know if this is normal or not.
As for SOT, the old battery was giving me 2.5 hours on average, with an average of 17 hours of total usage, the new one gives me 3.5 to 4 hours with an average of 20 hours of total usage (disconnect at 100% from charger and drained to 1% or 2%)
Hope you find this post helpful
monkeyisland3G said:
That's the next step, find a good provider and compare capacities.
What I know so far is that there's 2 different battery models:
EB-BN920ABE The most common, but most reviews complain about being 4 or 5 mm shorter, ...less volume less capacity.
EB-BN920ABA Difficult to find, It seems the original replacement according to this picture:
https://ae01.alicdn.com/kf/UTB8YQ_yanzIXKJkSafVq6yWgXXa0.jpg The original is the right side one.
I found a Canadian provider who seems serious (free of fantasy marketing) who also ships worldwide, it looks like the original, (or a extremely good copy) I'm going to take the risk and try it:
https://www.ebay.co.uk/itm/OEM-EB-B...e=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649
I'll post results in about 6 weeks....
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Click to collapse
I'm in the same boat as you. My battery life blows and I am looking for a decent replacement so I don't have to buy a new phone. How did that one work out for you?