Battery life

[Smiley76]

This is a post from the Xperia play forum about battery life. Since the new Xperia phones shares a common software maybe the Mini is affected too?

http://forum.xda-developers.com/showthread.php?t=1238230

I'm gonna try and see if there is any difference for me on the sk17i.

 

[iwosh88]

good idea

nice, please let me know if there will be some difference for sk17i

thanks

 

[ahm09]

well i tried it, and im sorry to say that ... but it doent change anything
Let me here give you and example of how bad is this phone battery situation is .
I have an HTC HD2 running android 2.3.3 and it has a 1GHZ processor which is the same with the xperia mini pro i bought , on the other hand the HD2 has 4.3" screen while the mini pro is only 3" so I already nticed after using the mini pro that its consuming so much battery than the HD2 but i wanted to be more specific so below are the details

HD2 Battery is 1230mA, xperia mini pro 1200mA ( Almost the same )

so I left both of them in idle for 8 hours ( wifi is on both have the same apps like facebook , google+, twitter, with the same update settings, )

the HD2 dropped from 82% to 71% in 8 hours in idle (Lost 11% )
The mini pro dropped from 100% to 50% in 8 hours in idle ( lost 50%)

for me this is a big gap between the two devices and to be honest i expected the HD2 to have a shorted battery life conidering its much more powerfull device and its 2 years old with the same 2 years old battery.

and i also noticed that during the test:
the HD2 never exceeded 10mAh consumption at all
the mini pro rarely went below 50mAh and the minimum was 26mAh

so i guess there is something that eats the battery during the idle time and it is taking alot of it comparing the two devices.

in fact when i bought the mini pro i wanted smaller device that will have a better battery life , but now its totally the opposit which make me confused.

 

[Smiley76]

nice, please let me know if there will be some difference for sk17i

thanks

Maybe very little actually.. but I'm gonna keep at manual.. no need to auto scan when I'm locked to one operator anyway.

 

[Smiley76]

well i tried it, and im sorry to say that ... but it doent change anythin
Let me here give you and example of how bad is this phone battery situation is .
I have an HTC HD2 running android 2.3.3 and it has a 1GHZ processor which is the same with the xperia mini pro i bought , on the other hand the HD2 has 4.3" screen while the mini pro is only 3" so I already nticed after using the mini pro that its consuming so much battery than the HD2 but i wanted to be more specific so below are the details

HD2 Battery is 1230mA, xperia mini pro 1200mA ( Almost the same )

so I left both of them in idle for 8 hours ( wifi is on both have the same apps like facebook , google+, twitter, with the same update settings, )

the HD2 dropped from 82% to 71% in 8 hours in idle (Lost 11% )
The mini pro dropped from 100% to 50% in 8 hours in idle ( lost 50%)

for me this is a big gap between the two devices and to be honest i expected the HD2 to have a shorted battery life conidering its much more powerfull device and its 2 years old with the same 2 years old battery.

and i also noticed that during the test:
the HD2 never exceeded 10mAh consumption at all
the mini pro rarely went below 50mAh and the minimum was 26mAh

so i guess there is something that eats the battery during the idle time and it is taking alot of it comparing the two devices.

in fact when i bought the mini pro i wanted smaller device that will have a better battery life , but now its totally the opposit which make me confused.

I have been struggling a bit too with battery life. But with my current settings I have 21hours since charge and I'm on 65%. (so thats about 2.1% each hour) But thats not standby only. I have been using connectbot, some browsing, facebooking, whatsapp.

wifi on all the time and push enabled for activesyncemail, facebook+googleplus+twitter notifications, whatsapp messages and gmail.

I have disabled 3G and set my operator manually and most important of all I have unchecked the Allow wireless network-option in Location and security.

Did attach two screenshots showing the battery usage. I had to connect the USB-cable to take those (with ddms) so it did charge for a minute or so (same thing abit earlier so it shows a small charge period for 1-2 min)

A bit funny also that it shows battery gain in two places (which wasn't when I had the device USB-plugged) and also it looks like something has been keeping the phone awake while the screen hasn't been on.

But as you say it's not very often down to 10mAh as you get on the HD2. (3rd screenshot)

 

[ahm09]

I have been struggling a bit too with battery life. But with my current settings I have 21hours since charge and I'm on 65%. (so thats about 2.6% each hour) But thats not standby only. I have been using connectbot, some browsing, facebooking, whatsapp.

WOW i really envy you now , i should find whats making mine drop that fast in idle while yours can last that long while using it. i will check the settings you specified and report back the results

I attached a screenshot of the HD2 idle usage

 

[GoBBLeS]

Wifi

I've found that the culprit for mine is the Wifi.

I went from ~8 hours to 32,5 hours(is just about to turn itself off) by turning wifi off and on only when I used it.

This is with me watching a 40 min mkv show, and playing myth defence for 30 minutes and a little talk and sms and searching the market.


Wifi location function has been off from the start.

It's a bit weird because on the x10 mini it turned off wifi when the screen timed out and it held for about the same time, so maybe it's a "feature" they forgot to implement on this phone.

 

[jtdc]

On normal usage mine lasts max of 2 days and thats pushing it. Normal use means I do browsing on it via wifi for maybe 10 minutes at a time per hour I guess. Will sync to wifi every 15 mins for 1 minute then off (via Green Power app). To help the thing, I am downclocked to 122Mhz on idle, max to 800+ on load via SetCPU, always on minimum brightness. Playing with autostarts too to disable apps to run and eat memory as well.

There is a higher capacity battery thread

http://forum.xda-developers.com/showthread.php?t=1232065

But we're still waiting for somebody to go and test it.

 

[Smiley76]

I've found that the culprit for mine is the Wifi.

I went from ~8 hours to 32,5 hours(is just about to turn itself off) by turning wifi off and on only when I used it.

This is with me watching a 40 min mkv show, and playing myth defence for 30 minutes and a little talk and sms and searching the market.


Wifi location function has been off from the start.

It's a bit weird because on the x10 mini it turned off wifi when the screen timed out and it held for about the same time, so maybe it's a "feature" they forgot to implement on this phone.

Strange. I almost the opposite behaviour, especially if I leave 3G on.

 

[shpit]

hello guys..
this my last battery life with wifi on,playing some game,sms,OC to 1113mhz,smartass governor,,UV,backlight off...

 

[Smiley76]

WOW i really envy you now , i should find whats making mine drop that fast in idle while yours can last that long while using it. i will check the settings you specified and report back the results

I attached a screenshot of the HD2 idle usage

Im still on the same charge 1d16h and i used it alot yesterday evening.


Sent from my SK17i using XDA App

 

[Smiley76]

Im still on the same charge 1d16h and i used it alot yesterday evening.


Sent from my SK17i using XDA App

At 10% the phone suddenly dropped to 1% and it did shutdown.

 

[ahm09]

Something is draining the battery during the sleep and i cant find it.

 

[jtdc]

At 10% the phone suddenly dropped to 1% and it did shutdown.

Yes, this thing happens to me, 30% them immediately 1% and stays on for maybe 2-3 mins then dies (when in heavy use). I will recalibrate the battery stats when the phone is fully cycle charged (drained to dead, and charge on AC overnight). Hopefully should fix the issue.

Something is draining the battery during the sleep and i cant find it.

Check the battery usage what consumes it (Settings, About Phone, Battery use).

 

[Smiley76]

Yes, this thing happens to me, 30% them immediately 1% and stays on for maybe 2-3 mins then dies (when in heavy use). I will recalibrate the battery stats when the phone is fully cycle charged (drained to dead, and charge on AC overnight). Hopefully should fix the issue.



Check the battery usage what consumes it (Settings, About Phone, Battery use).

yeah. it died again at about 10%, I did plug the charger and switched on the phone and it went directly to 10% again. Unplugged it and it died after a few mins. Did pull out the battery and inserted it again and now it started to behave correctly starting from 1%.

Another thing I have noticed is that when it reaches 100% it starts to discharge until it goes down to 95% then it charges again (quite normal behavior) but the phone still shows 100%. So it could be down at 95% when you disconnect it but it starts to tick down from 100%. I did check the kernel source and it was a comment there that it should show 100% while still charging in that mode.

It's possible to see the real value when using adb logcat|grep charge and also betterbatterystats shows the real value instead of the 100%.

 

[jtdc]

thanks for the tip will try that. i get that same thing too, dies at 30% but when charged, it goes up at 30% immediately hehe... well, i didn't went to extent remove the battery though. what i do know is to have "Battery Monitor" sound some notification at 3425mA. At that rating, that just means I have some time to look for the cable and charge it.

 

[tulient]

Side by side, the st15i screen is significantly brighter than the st18i screen at the same brightness level. Though the st18i has a higher resolution, its colors appear more washed out, in a way though that is easy on the eyes. The st15i seems to be brighter and perhaps that is hurting the battery life.

Upon further testing, it appears the auto brightness feature of the stock rom is doing this.
With both devices in a dark environment, the st18i appeared brighter, with the same brightness settings.
Unfortunately, there doesnt seem to be a way to turn off auto brightness on the stock rom.

 

[knudsen81]

My mini pro's battery last much longer then it did on my old phone galaxy s2 so I have not a problem with battery

Sent from my SK17i using xda premium

 

[exige]

how long does it take for your mini-pro to fully charge when is on?

2 hours and i have 13% from dead and i on to charge it.. i killed all apps...
This there something wrong?

 

[Smiley76]

thanks for the tip will try that. i get that same thing too, dies at 30% but when charged, it goes up at 30% immediately hehe... well, i didn't went to extent remove the battery though. what i do know is to have "Battery Monitor" sound some notification at 3425mA. At that rating, that just means I have some time to look for the cable and charge it.

I'm currently on almost 2 days since charge and on 8%. And just when I started writing this it did just go down to 1% and a warning that battery is almost dead.

So it become 2% "better" ;-)

But I'm still happy with almost 2d with mixed usage and standby (wifi,push etc all the time).