Thats quite high if you ask me.
I put mine in flight mode overnight for around 8.5 hours and I only loose 2-5%
Check your wake time against your screen on time. If your phone is awake while the screen is off then its down to wakelocks.

 

yup, i'd be happy with 5% drop over 2.5 hours. the display looks normal too, i dont know how accurate the percentage would be but yeah, i dont think there's anything to worry about.

is ur latitude signed in? even if its not set to automatically update ur location, having latitude signed causes battery drain, it seems to run in the background. thats the only reason i can think of for maps to be on ur battery usage list

 

I usually lose 0-1% battery during the night. But I suppose that could be down to freezing most of the apps that were constantly running.

 

Yes, this will be more than likely what is causing your battery drain.
If you dont use latitude I suggest you sign out of it and then compare your battery drain after.

 

Once you sign out you should be ok. Just check in the options that there is no auto sign in or anything. I dont use it ever so i've never had a problem but I know others have.

If its not latitue then it could be another app thats constantly asking for your location.

 

Latitude > Menu > Settings > Sign out of Latitude (Latitude automatically signs you in when you open it)

 

Sorry, of topic. I assume you only keep your phone on at night stop the alarm goes off in the morning. If so you might like this app.

https://market.android.com/details?id=eu.chainfire.nomoarpowah&feature=search_result

I haven't tried it out so it could end up using more battery during the day than it saves at night. But it might work.

 

As some one mentioned on top, where can i find option for

"Check your wake time against your screen on time"

 

Yes but it also allows me to monitor wakelocks better and also if I need to see the time I dont have to turn the phone on. I had seen it before but thanks anyway

I think it just disables those features in Latitude not google maps. Maps should still detect your location (although I could be wrong)

It may not be latitude thats causing the wakelock, it could be another app asking for location.

Menu>Settings>About Phone>Battery Usage
Press the graph and it will show blue bars next to awake time and screen on.

 

Up until a few days ago I was only losing 3-4 % overnight (max) but it's increased for some reason since then. Last night it dropped by around 3.5% per hour whilst on idle and with data services switched off. Any idea why it would suddenly be showing such an increased drain with no activity?

 

Are you rooted? If you are, you should look into the processes that are running behind what shows as "android os". There are certain processes that sometimes kick in randomly when the phone is idle. You can freeze them with BloatFreezer. It solved the problem for me, I haven't been monitoring my battery life recently but I believe I lose around 1% every 2 standby hours.


Anyway, whether you're rooted or not, I recommend SystemPanel and Battery monitor widget to see some info on what is really going on and statistics of battery usage.

 

Thanks for the reply... No my phone is not rooted. Only got it last week and a bit nervous of attempting that so quickly as I am new to Android. Will certainly look into it though as it appears it is the way to go to get the most out of it.

 

I understand your fear of rooting, I was planning to root mine as soon as the warranty ends, when suddenly I discovered I bought it rooted. So lucky me
I think there are many ways to improve battery life without rooting. Besides, ice cream-sandwich is on the way... It is due to be released before the end of the year. Probably will improve battery life and everything else... Unless Google is rushing it to counter ios 5... hope it won't be half-baked..

 

Well, it seems my problem of battery draining too quickly on idle was a simple one to resolve. My battery was down to 5% yesterday evening after just under 22 hours so I put it on charge until it was full and then switched it off for a few hours. Put it back on when I woke in the night and after 5 hours on idle it had just dropped to 98% Much more how it was behaving before. Now 6 and a half hours in and following a phone call, several texts and checking a few things it's on 93% so it would seem there must have been something in the background sucking the battery dry before I switched it off.

Definitely will be switching it off now and then just to clear things out in future.