yashsingh1/xdaforums huggingface dataset:
[Galaxy S I9000 General] zerozoneice:
yes true, the purpose of the test i did was to see how long can it last with minimal AUTOMATIC usage of data/sync etc.

next test is to fully charge it again, turn on 3G data (shows as "H" by the way) and background sync ON. With the same usage pattern i'm curious how long it lasts this time :)

of course i agree that running it in this "handicapped" mode is not what the phone was made for :D

(damn i forgot to activate one important setting: airplane mode, hahahahahha :D)

but several things are for sure:

1) i DID turn on the display very often :) like every 10 minutes or so to check something but i always turn it back off after that.

2) i never used the music player / maps / layar / any dumbas$ bundled Samsung apps / etc

3) apps i use 99% are: phone / contacts / sms / mail / internet / weather / calendar / camera (photos&video).
[Galaxy S I9000 General] zerozoneice:
charged 23h ago to 100%, same usage pattern as last time but with less voice calling. Turned on Wifi and Datasync and 3G data on where no wifi available.

I get these results:

23h 8min since unplugged

===================

Display 56% (43m usage time)

Cell Standby 20% (23h 8m time on, 0% time without signal)

Voice calls 10% (12m)

Phone idle 9% (22h 25m time on)

Wifi 5% (3h 21m time on)

Battery now down to 29% after 23h :(
[Galaxy S I9000 General] NISMOFO:
I am using an app called Screen Filter to dim my screen. Can anyone tell me if this actually helps save abttery? I think where the iPhone also conserves battery is with how dim the screen is compared to my captivates's blindingly bright screen. I dim my screen down to 30% or 40% usually depending on the time of day.
[Galaxy S I9000 General] zurchpet:
Yes. Dimming the Super AMOLED (actually any OLED) does save battery.
[Galaxy S I9000 General] fulcrum1971:
When i was on stock 2.2 the battery performance was great. Just about 1% or so on standby with everything on per couple of hours. Used to last me the entire day with heavy to moderate use. Mostly web surfing with and without wifi, a few calls and a few msgs. Now on 2.2.1 with speedmod kernel it is 8-10% per hour on standby and 1% every 3-4 minutes of surfing the web. The moment i unplug the charger the charge drops by 1-3%. Cleared battery stats too but didn't help. Any one any solutions?
[Galaxy S I9000 General] sackynuts:
Thats just how it is on 2.2.3. I tried everything!!! Change back to 2.2 if you can't live with the insane batterydrain on 2.2.1.
[Galaxy S I9000 General] fulcrum1971:
Ha wish i could cos its the best Rom. Just looking for a battery fix, if there is one.
[Galaxy S I9000 General] milro1970:
Display Power Madness...

The display power consumption is absolutely insane. I calculated from 2 different posts in this thread the % battery drop per minute caused from the display and it goes like this:

Post 696

0.436% / min

Post 729

0.924%/min

...and based on battery stats I read from my device now (Brightness is set to the lowest level and I use screen filter at 62%)

0.642%/min

My battery is the standard 1500 mAh stock. I am assuming that the same stands for the 2 examples above.

Amoled has no standard consumption but let's calculate the battery consumption for 1 hour display usage based on the above rates

1) 0.436%/min -> 26.16% / hour battery drain

2) 0.924%/min -> 55.44% / hour battery drain

3) 0.642%/min -> 38.52% / hour battery drain

Let me say that 55.44% of the battery, just for the display, for only one hour usage is horrendous and for me even 26.16% doesn't feel right. Maybe there is something fishy with these numbers but how can someone validate this?

For my part I would really like to see more numbers like that from other users with 2.2.1 roms and possibly older ones.

Browsing the internet with an amoled screen like ours and reading articles (which means most of the time: white background - black fonts) is really no go. For me is absolutely necessary a browser that could invert intelligently the colors in order to minimize power consumption for our screens. I also would like to see a gmail client that gives us the option (at last) to change the default white background theme to a black one. We may also consider using only dark, mostly black, backgrounds for our phones (I am using as a background the black.png file, downloaded from wikipedia).
[Galaxy S I9000 General] bokbacken:
In post 3 there is a link about lpy:s measurement with a multimeter hooked up to the batter, take a look at his results.

The direct link if you don't find the 3:d post:

http://xdaforums.com/showpost.php?p=10137241&postcount=387

Reading all of the first posts WILL give you knowledge, don't underestimate that.
[Galaxy S I9000 General] milro1970:
Thanks.....

EDIT:

Based on the data of the 3d post, two more calculations:

I will use the following data from the 3d post (based on a stock battery at 1500 mAh capacity):

White screen (minimum brightness): ~130mA

SetCPU app 100% CPU stress test (screen on, minimum): ~295mA

For 130mA -> 8.667% / h battery drain

For 295mA -> 19.666% /h battery drain (this number sums together with the display the cpu power consumption while the cpu is 100% loaded for 1hr)

Those numbers are nowhere near the numbers I've calculated based on the battery usage stats from the phone on my previous post. Any thoughts?
[Galaxy S I9000 General] lokhor:
Can anyone answer this?
[Galaxy S I9000 General] Toonio:
+1
[Galaxy S I9000 General] bokbacken:
Hi!

I don't think anyone can, because nobody really knows the mechanics behind this so called battery calibration.

This is one of these "just do it" that everybody tells you to do without knowing why. I have asked for an explanation about this, and the truth is that nobody knows. Personally I don't believe that deleting the battery stat file makes any difference to us in the long run.

I really hope someone could find out the truth about this.
[Galaxy S I9000 General] Don MC:
Thought I'd post my battery drain findings here as well. As You can see, I've mostly been using Doc's ROMs, but with varying modems, WiFi FWs and kernels. Right now, I'm seeking a solution to my latest drainage problem. It drains more than twice as fast as it did at its best. I'm aware of the lagfix and it's battery consumption, but my earlier experiences have shown that the difference in consumption is very small and should not double my idle drain.

************************************

Quadrant scores & Idle battery drain:

These measurements are highly UNscientific. They are done simply by

eyeballing Quadrant & JuicePlotter graphs.

For battery drain "tests", I put the phone on my bedside table. Preferably

let it stay overnight and then read the JP graph in the morning. Divide

battery drain % with number of hours and get %/h.

I test my phone when data is IN USE. Not when everything is turned off.

This is a smartphone and it is made to sync everything all the time (but

I'd still prefer it to drain as little as possible while doing it).

If You want maximum idle time, go buy a cheap phone without 3G or WiFi.

WiFi Sleep = Never, 3G Packet Data = ON (unless stated otherwise).

BG Data & Auto-sync = ON. Calendar + K9 Mail = Push (unless stated otherwise).

Signal strength at my location: WiFi: -65...-60dBm, 3G: -79...-69dBm.

All kernels are 500Hz (unless stated otherwise).

ROM: XXJPY Doc ROM v7.1.1 Romkitchen.org

Modem: JPP, JPE

Findroid's Kernel Stargate 2.0: 1017 (no tweaks)

Hardcore's Kernel K12K: Quadrant 1014 (no tweaks)

Hardcore's Kernel K12K: Quadrant 1312 (Lagfix + all recommended tweaks)

Hardcore's Kernel K12L 256Hz: Quadrant 1350 (Lagfix + all recommended tweaks)

Hardcore's Kernel K12L: Quadrant 1338 (Lagfix + all recommended tweaks)

Hardcore's Kernel K12N T2: Quadrant 1208 (no tweaks)

Hardcore's Kernel K12O: Quadrant 1236 (no tweaks)

Hardcore's Kernel K12O: Quadrant 1372 (Lagfix + all recommended tweaks)

ROM: XXJPY Doc ROM v8.1.1 Romkitchen.org

Modem: JPE, JPP

WiFi: JPA(?)

Hardcore's Kernel K12O: Quadrant 1202 (no tweaks)

Battery: <1%/h

ROM: XWJS3 Doc ROM v9.1 Romkitchen.org

CSC: XEE

Modem: JPP

WiFi: JPY(?)

Hardcore's Kernel K12P: Quadrant 1188 (no tweaks)

Battery: >1%/h

ROM: XWJS3 Doc ROM v9.1.3 Romkitchen.org

CSC: XEE

Modem: JPY

WiFi: JPY(?)

Hardcore's Kernel K12P: Quadrant not tested

Findroid's Kernel Stargate 2.3: Quadrant 1125 (no tweaks), 1108 (startup tweaks)

Hardcore's Kernel K12Q T2: Quadrant 1201 (no tweaks)

Battery: ~20%/h

*Reflash 9.1.3 due to phone heating & battery drain issues*

ROM: XWJS3 Doc ROM v9.1.3 Romkitchen.org

CSC: NEE-JS1

Modem: JPP

WiFi: JPA (flashed manually over existing ROM)

Hardcore's Kernel K12P: 1356 (Lagfix + all recommended tweaks)

Battery: ~2%/h

***********************************
[Galaxy S I9000 General] Johnny55555555:
I found that installing SetCPU apk using ondemand settings and setting screen off/idle clock speed to 100 MHz cut per hour battery usage from approx 3.5% to approx 0.5% plus or minus 10%

Being ondemand the instant you touch the screen or anything fires up cpu clock jumps back dynamically to 1 GHz or whatver is required between 0.1 and 1.0 GHz, no loss of responsiveness or speed.

By far the biggest battery saver I have found.
[Galaxy S I9000 General] NIC0LAS:
Bokbacken, I now use your ROM. Thanks ! I'll keep you informed so that you know if I have the same performances.
[Galaxy S I9000 General] Don MC:
I did some re-reading of this topic and found that Bokbacken and I are on the same page here. We wonder why people turn all data OFF on a smartphone.

And then they report battery statistics with all data off and the network set to 2G. No wonder they get by with 5 days standby and/or 1% battery loss over 12 hours.

It's like testing a car's fuel consumption with the engine on idle, instead of driving on the road and getting some REAL results.

A car is made to haul people and things around. While doing so, it unevitably will consume fuel. There is no way around it. A bigger car means more people will fit in. A bus is really big and will fit TONS of people, but it also means more fuel will be consumed. You can lessen the load to save fuel, but then you'd be driving around in a big empty bus for no use whatsoever. It's the passengers who pay for your fuel, so it's a good idea to take on as many as possible.

The same with smartphones. They are 'big and heavy' and use lots of energy. But in exchange, they do tons of stuff for you. It's this 'stuff' that are the paying passengers. So it's a good idea to take on many passengers to justify the higher consumption and higher purchase cost.

(sorry if I was OT)
[Galaxy S I9000 General] NISMOFO:
I think I've tried every trick so.far with no luck. I wont list what I've done but ill say they've had minimal impact. I basically have to unsmart my smart phone to get regular battery life....screw that.

So my latest step is juice defender. I even bought the paid version (my second time paying for an app). It works pretty good and I do recommend it. We know there's not much you can do while actually using the phone to save battery...this app takes care of when you're not using the phone by shutting off data etc. I do love it. The 2g/3g feature doesn't work with my rom or the cpu adjustments. Oh well. In the past I was manually setting the phone to 2g..lol. now it can run schedules to check email and sync. When the screen is off, the data is off.....then the schedules run whenever you want rather then ALL the time.

The auto enable wifi feature is nice when you are in range of one of your hot spots but the downside is that you need to leave location settings ON for this feature to work.

There is a learning curve to this app, but I do recommend it. Im sure everything I posted has already been covered earlier and buried deep several pages back.
[Galaxy S I9000 General] diablosv36:
My brattery drain issue comes down to the SNS photo service getting stuck restaring... when it is doing this my phone isn't able to sleep properly... it seems to be related to the inbuilt facebook sync, when i disable auto sync for facebook and stop the sns photo service... I get no more drain!

I am on a DOC JPY rom.
[Galaxy S I9000 General] Don MC:
I've got UltimateJuice as well. But it crippled my phone to the extent I wasn't getting mail notifications at all, so I disabled it. The schedule function simply didn't work (or perhaps it did work, but my mail app didn't sync during the scheduled online periods).

I've got WiFi on all the time (there are some good hotspots at home, at my friends's and at my favorite shopping mall), 3G is on and data is always on. In other words: The phone is in 'smart mode' 24/7.

When all is well, I can get by two days without a recharge, which is good enough for me. But currently I've had some problems and my phone drains in less than a day. I have no idea why it does this.

Normal drain for me is less than 1%/hour when the phone is left alone. Now its up to over 2%, for some reason.
[Galaxy S I9000 General] bokbacken:
Hi!

your previous post was very on topic, good comparison.

I havn't tried UltimateJuice myself, might give it a try, but I don't have any big battery problems anymore.

I would reccomend SystemPanel to find what is consuming power in your phone right now, I have it on at all time in my phone just in case, so I will always have the latest week's usaged available when the next drainer appears, so I should be able to identify it quickly.

Keep all your paying passangers in the bus!
[Galaxy S I9000 General] vid200:
I could almost say the same. I found modem JPP the best, and stock JP7 ROM (which my gf still has and the diff is quite big).

Am on the same path as you, now on DOC 9.1.3, jpy modem, HC Kernel 500HZ and lagfix. but my battery is ok. Not as good as on stock-my gf, but still fine. I have wifi on, all sync and data on, but I do use superpower, which turns everything off when the screen goes off, and I use tasker for special profiles.
[Galaxy S I9000 General] Johnny55555555:
I use my phone as a smartphone, actually as a mobile computer that also happens to do phone calls and sms and email.

I draw the comparison that it is more alike to my laptop, rather than my old nokia brick dumbphone with 15 day battery life.

I do optimise things somewhat, but the same as a laptop, flashy background wallpaper (such as Vista dreamscene) is a distraction, so my wallpaper is plain black on my Galaxy and my desktop.

I don't wander around playing games, it is not a PSP.

I tried all the major battery managers, task killers, battery monitors, and found them of little actual use, and some made things worse.

I was looking at once a day on the charger, acceptable, but I liked the idea of tweaking.

It's a UK Galaxy S on 3 network with 2.2 firmware, JP2, 2.6.32.9 kernel, froyo jp5 updated through kies.

Z4 root and one click lag fix applied.

I use 3g data connection on all the time, and wifi and gps on demand.

BY FAR THE BIGGEST BATTERY SAVER was installing SetCPU

I used "ondemand" setting, which means clock set to 100 mhz when idle, makes no noticeable difference to the speed or responsiveness of the phone whatsoever.

looking at my phone now, 75% charge, good health, 24 deg C, 3.977v, uplugged for 15 hours.

that means around 60 hours on a full charge, or two and a half days.

that is more than good enough for me.
[Galaxy S I9000 General] El-Maestro:
I have WiFi turned off when screen is locked and HSPA & Data always on, no push or any widgets that require a data connection and I get 1% drain in ~2 hours.
[Galaxy S I9000 General] Don MC:
So the push function almost doubles the drain. In excellent conditions, I can go 2 hours on 1% of battery, but in normal good conditions it's around 0,7-0,8% / hour.
[Galaxy S I9000 General] NISMOFO:
I actually had the same issue while messing with the JD (JUICE DEFENDER) settings and my mail wasn't syncing as well. I had to manually hit refresh. I got it all figured out though. The issue was me andmy settings...not JD. its one or those "be careful what you wish for" kind of apps when you jump into advanced.

I went to bed with 94% battery and woke up about 7 hours later to 90% battery. The phone was set in airplane mode 3 of those hours, the rest of the time it was checking data every 30 minutes (2 minutes long each time). Im pretty happy with it so far...but it did take awhile to learn it. There are tradeoffs. I mean its another app running, and leaving location on for the wifi to enable. But you can turn location off and it'll use 3g instead. Also if you can turn it off all together while doing heavy use if you don't want it running.

Im still happy with it and in no way so I feel like I wasted money on this app. Ill continue to use my screen dimmer as well. If I could just put my phone down for more than an hour I could save battery....but that's like telling me not to breathe air....lol.
[Galaxy S I9000 General] Don MC:
I wish I could let it go on Airplane Mode. But I cant :) Need to have it online all the time. Also, having JD close down data for even 15 minutes is to me like lying on a bed of nails. I could easily miss an important mail in 15 minutes :)

I just finished a total reflash. Wiped the whole thing (except for my music and picture files) and reflashed Doc ROM 9.1.3. Then set up my phone again. The tedious way: Manually. Not by restoring a Titanium backup.

My missing apps I did restore from a backup, but I did NOT restore any app data. So I had to set all my apps up again. Manually. K-9 Mail is by far the darndest motherf**ker of an app to setup.

Now I'm back to less than 1%/h battery drain again. There was something in the app data or system data that screwed my phone up.

I did take a fresh backup now, though. While all data still is UNcorrupt.
[Galaxy S I9000 General] NISMOFO:
I've always been tempted to just reflash to stock without restoring apps/data.....try the phone for a week without playing with settings, dimmers, sync....just to see how the battery likes it.

I still have my 2 spare batteries, and I think I'm going to start using them again. JD is not the best thing since sliced bread, but it helps if you don't need instant emails.

My battery still drains like a NISMOFO when the wifi kicks on automatically. The screen being on and/or wifi really does a number to the phone's battery life.

Somtimes I think swapping batteries just seems so much easier than fighting for something that's probably not possible...lol. Once you get the extra batteries, you feel paranoid going anywhere without at least one charged spare....lol. It's like having a gun with only one clip.

One nice feature that I like about JD though is that you can set the data/wifi to only come on for certain apps when they are open. Again, this only applies to those of you that don't need your emails showing up instantly. You can set it to check for as little as every 5 minutes I think.

I'm still open everyone else's experiences....but I'm more interested in battery saving methods for people that actually use their phone a lot.

Is there a battery battery out there than the one Samsung sells? I'm sure a larger battery would help, but doesn't look like an option....lol. I wonder if the extra weight of the iPhone is from the hardware or a giant battery stuffed in there?
[Galaxy S I9000 General] Don MC:
WiFi actually consumes less energy than H/3G. That's why I have the WiFi Sleep Policy set to 'Never'. So whenever I'm within range of a WiFi hotspot, the phone automatically switches to WiFi. When I'm on the move, it switches to H/3G.

I think I saw a 3000mAh battery on sale somewhere. It comes with a larger back cover, since the original won't fit. Makes the phone a whole lot bigger though.

iP4 has a 1400mAh battery (vs. Galaxy's 1500mAh). It's longer and narrower and indeed takes up quite a bit of the phone's inside space (which isn't very roomy to begin with). My previous phone was an iP4 and it's battery life is actually a tad bit worse than the Galaxy's. That's speaking from my experience of it.

Most of the iP4's weight comes from the stainless steel frame and the glass front and back plates. I'd guess the battery weighs more or less the same as the Galaxy's battery does.

EDIT: Can't resist: I like Android WAY better than iOS. Especially the rooted Android.
[Galaxy S I9000 General] Korshar:
Are you serious? Actually the Iphone4 battery life is MUCH better than the galaxy's one.. Compared to my friends' iphones 4 the galaxy battery life is not close to them, actually one iphone 4 charge does even last longer than an eclair 2.1 jm2 charge (which was ~20% longer than on froyo)..
[Galaxy S I9000 General] Don MC:
I must have had a faulty one then. It gave the same two days, but WITHOUT push mail on.
[Galaxy S I9000 General] Korshar:
Yea, definitely a faulty one then.
[Galaxy S I9000 General] franks.maia:
Rooted android is freedom!! :)
[Galaxy S I9000 General] amwebby:
Comparing a friend's iPhone 4 is not a valid comparison. He won't have the same sort of apps as you and his use will be different. I have run my iphone 4 and my Galaxy S running 2.2.1 alongside each other running the same set of apps and using each in the same way and my experience is that I get 3 more hours out of the SGS.
[Galaxy S I9000 General] salivaman:
:eek:

from my experience, using my sister's iP4, I'm more inclined to believe the 3 more extra hours would come from the iP4. iP4's battery blows the **** out of my SGS's.

i also have friend who claimed that gaming for 10 mins on iP4 equate to only a 1% drop in battery for the iP4, can anyone confirm this?
[Galaxy S I9000 General] naenee:
Hm. This thread was more useful before it derailed into iPhone vs Android land.
[Galaxy S I9000 General] Don MC:
Sorry about that :) Just one more thing:

This subject is interesting because the two phones have basically identical hardware (all today's smartphones are more or less the same). The SGS does have a larger screen, but it's an AMOLED, which consumes less energy per area than iP4's backlit TFT.

So the phones should consume more or less the same amount of energy. But the OSs differ (although both are UNIX-like systems), and it is here we can make a difference. Android is highly customizable and we can greatly increase it's efficiency by fine tuning it's drivers etc.

iOS is finely tuned for energy efficiency. And it's easy for the manufacturer to do, because they basically only have a couple of phone models running iOS. There's not much an end user can do to change iOS. It is what it is and we'll have to live with it. Perks and quirks and all.

Android OTOH is very flexible and is run on a large variety of different phones, and in some cases manufacturers seem to have had a hard time adapting it to a particular phone's hardware.

Samsung is no exception. There is room for improvement. And it is here this thread comes in. If Samsung won't improve it, then the devs will. And they have mostly done a great job. We just want to gather all of those improvements and have an OS more efficiently tuned to SGS than the iOS is to the iP4.
[Galaxy S I9000 General] amwebby:
I think Don MC is right. Although I get better battery life from my SGS than my iPhone I have tweaked it with apps and root fixes to; turn wifi off 15 seconds after the screen turns off, data use is toggled when away from wifi so I only use it when I need it and the phone goes into airplane mode overnight.

I could only do this on the iPhone if it was jailbroken, which it is not.
[Galaxy S I9000 General] h1shahar:
which apps can do

- turn wifi off 15 seconds after the screen turns off

- data use is toggled when away from wifi so I only use it when I need it
[Galaxy S I9000 General] peon99:
im experience the same issue with display consumation... and it drains 1% 4-5min while surfing the net..
[Galaxy S I9000 General] JJEgan:
I know how to drain my battery over twelve hours .Tested a number of times .

Turn WiFi sleep to never do not use phone and have no strong WiFi signals near the phone . So presumably its wasting time and charge searching for out of range networks .

Normal twelve hour sleep drain is 2 - 4% .

jje