Help AWFUL battery life on samsung S2

garba · Sep 5, 2011

Hi everybody, just wanted to share with you the ridicolously low battery life I'm experiencing on my S2. I believe something is wrong with my battery, it battery dropped from 100% down to 65% in a mere 1.5 hours with the navigator running (with I could post a pic but I can't because of some forum restriction rules)

Some extra info:

- display brightness at 100%
- data connection on all the time
- wifi off

what do you guys think? Thanks for your feedback

steslatt · Sep 5, 2011

Navigation will run your battery down a lot because your display is constantly on and so is gps. Not sure about your figures because I have never used navigation for that long. Maybe someone else could confirm?

Riche101 · Sep 5, 2011

steslatt said:
Navigation will run your battery down a lot because your display is constantly on and so is gps. Not sure about your figures because I have never used navigation for that long. Maybe someone else could confirm?

gps will kill your battery if you leave it on plus you have your brightness set at 100% which is not that necessary tbh as the screen is a good quality and looks fab even at 30%

Hammerpgh · Sep 5, 2011

That sounds way too much to be honest! I used navigation software on my SG II for the first time yesterday and had it going for abt 20-30 minutes and it only dropped my battery by abt 2-3%.

There must be something else sucking the juice dry or a problem with the battery.

BugPowderDust · Sep 5, 2011

Hammerpgh said:
That sounds way too much to be honest! I used navigation software on my SG II for the first time yesterday and had it going for abt 20-30 minutes and it only dropped my battery by abt 2-3%.

There must be something else sucking the juice dry or a problem with the battery.

Either you're lucky or my phone battery sucks too.

I have 2G data only on, wifi off, display off and I use more than 2-3%!! With navigation (GPS) on, I use way more than that.

steslatt · Sep 5, 2011

I use bluetooth to stream audio on my journey to and from work for around 35mins and that drains my battery by around 10% thats with the screen off. So I can imagine GPS with screen on constantly using even more.

hellybob · Sep 5, 2011

Yes I use sat nav all the time on my phone and with that bluetooth and the screen brightness at about 50% my phone struggles to remain at the same level of charge even with a top charger.

Hammerpgh · Sep 5, 2011

Well, maybe that was just first time lucky.. I'll have to try it out again and see what I find.

Sydney99 · Sep 5, 2011

used navigation this lunchtime 20 mins, 30% brightness, battery dropped 7%.

Fluffer · Sep 5, 2011

I've found that Nav will drain battery quicker than the in-car charger can keep it at a set level. But I also have screen at full with everything on. I charge the S2 whenever I can and leave it plugged in everynight. It is poor but I also appreciate I need to look at ways to reduce battery consumption.

garba · Sep 5, 2011

Thanks everybody for your feedback! Wow, I can't believe that the charger would be unable to keep up with the power drainage coming from nav + 100% display brightness + data connection (see Fluffer's post)... but this makes sense: it takes about 6 hours to fully recharge the phone (stock charger, phone switched off), in my usage scenario, in 1.5 hours the battery dropped from 100% down to 65% i.e. that would have fully drained the battery in 4.5 hours. Need some extra amperage here...

PS you amperage may vary

heshanj · Sep 5, 2011

screen brightness is definitely a reason it drained so fast. like others have mentioned, it looks great at 30%, and even in direct sunlight, ur not gonna need 100%. the screen being on for 1.5 hours at 100% brightness, im not surprised it drained so fast

with GPS on too.

however, u could u check out the battery usage graph, see if any other app has been eating ur battery.. or check ur running services etc..make sure no other app is to blame.. and which firmware are u running?

Deleted User · Sep 5, 2011

Stock S2 - Android 2.3.3

Used Sat Nav today for around 2.5 hours (full navi volume) with the screen at 30% brightness, sent SMS and browsed FB a fair few times whilst flicking between sat view and normal view. Battery dropped 15-20%

Screen brightness at 30% is more than enough imo as the screen is utterly fantastic anyway.

Do you use JuiceDefender? i have the basic free version and it saves a decent amount of power.

Shocky · Sep 6, 2011

garba said:
Hi everybody, just wanted to share with you the ridicolously low battery life I'm experiencing on my S2. I believe something is wrong with my battery, it battery dropped from 100% down to 65% in a mere 1.5 hours with the navigator running (with I could post a pic but I can't because of some forum restriction rules)

Some extra info:

- display brightness at 100%
- data connection on all the time
- wifi off

what do you guys think? Thanks for your feedback

That sounds about right to be honest, full brightness + data connection + GPS for 1.5 hours will hurt your battery.

biffsmash · Sep 6, 2011

Mine doesn't use half as much as that using SATNAV but then I also dont ever use 100% brightness and it burns away my retinas lol. I almost always plug in a mobile to charge while using sat nav though so can't say it's an issue.

My phone charges in around 4 hours though, shouldn't be taking 6 hours to charge while the phone is off.. although I am using a HTC 1000ma charger.

DeAtomizer · Sep 6, 2011

Ive owned my Galaxy S2 for a few weeks now and i was about to throw the phone out the window because of the appalling battery life. My battery was lasting less than a day. I thought i tried everything to fix the problem. I lived in this forum for weeks trying to figure the problem out. I found the problem that was draining my phone. I turned of the Tilt feature and now all of a sudden im getting 3-4 days easy on my phone with casual usage.

vic2pc · Sep 6, 2011

DeAtomizer said:
I turned of the Tilt feature and now all of a sudden im getting 3-4 days easy on my phone with casual usage.

Do you mean you turn off "Auto Rotate" ? I may have to try that.

BTW, my phone had appalling battery life too, until I did the "turn airplane mode on then off" trick, which fixed it. Coupled with your tip, maybe I can get even more battery life!

Sydney99 · Sep 6, 2011

what does turn airoplane mode on/off do??

DeAtomizer · Sep 6, 2011

Sorry, not the tilt feature. I deactivated the Motion Feature (settings/motion). As soon as i turned this off the phone started holding its charge days longer. I must also mention i use Juicedefender and have all the Power Saving Mode (settings/Power saving mode)feature on.

DeAtomizer · Sep 6, 2011

Sydney99 said:
what does turn airoplane mode on/off do??

You cant have your phone on when flying, so the Airplane Mode allows you to turn off the 3G on your phone so you cant make or receive calls while still allowing you to access the rest of your phone. Like apps and music etc.

Sydney99 · Sep 6, 2011

yeah, sorry, badly phrased question. i didn't mean what does airplane mode do, i meant what does swithcing it on then off again do to the battery??? :cool:

DeAtomizer · Sep 6, 2011

oh, nothing that im aware of.

Morat · Sep 6, 2011

Airplane mode make a huge difference if you're in a low/no phone signal area.

vic2pc · Sep 6, 2011

I read somewhere in these forums that airplane mode toggling fixes a bug of some sort, that affects battery life. My phone used to last less than 12 hours before running flat. I tried the airplane mode trick (after finishing charging, just in case) and started getting 3-4 days of battery life as a result. No other changes to my phone at all. Worked for me, YMMV, etc.

Sydney99 · Sep 6, 2011

weird

Help AWFUL battery life on samsung S2

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