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I own a i-mate jam (updated with rom 1.12.04 ITA). When The battery power go down 10% i get following message (i traslate from Italian)
"warning: SD/MMC
residual power insufficient for selected divice to work. Close some active functions or connect AC Power adapter for recharge battery and tray again"
Consequently when the power go down 10% i can't use all programs i istalled on sd card.
Before i owned an Hp 1930 pocket pc and i could use sd card under 10% of battery power also.
Same thing with bluetooth: i can't use it under 10% of battery power e consequently i can't use bluetooth headset.
is that a malfunction of the i-mate Jam ?
and is there some workarounds ?
Thank you in advance for the answers.
servizio said:
I own a i-mate jam (updated with rom 1.12.04 ITA). When The battery power go down 10% i get following message (i traslate from Italian)
"warning: SD/MMC
residual power insufficient for selected divice to work. Close some active functions or connect AC Power adapter for recharge battery and tray again"
[...]
is that a malfunction of the i-mate Jam ?
and is there some workarounds ?
Click to expand...
Click to collapse
It is not a malfunction, but a security feature. When going low on power the device turns off those devices to reduce power consumption which will enable it to keep the data in memory for a longer time. This is something conceived for the regular users wh install their stuff to memory, not for power users like us who keep progs on SD etc.
There is no workaround I have have heard of, and the topic came up quite some times here.
Consequently when the power go down 10% i can't use all programs i istalled on sd card.
Click to expand...
Click to collapse
The best way to avoid this (and do good to your device) is to recharge more frequently. I don't know about your usage, but with the batteries in the Magician it is thought to be better to recharge once the battery reaches 30%-40%. That is supposed to give the longest battery life.
So, if you can recharge more frequently and do not let the battery drain that low. If you are on the go for long periods of time, consider investing in a new high-capacity battery or get a second one so you can change them.
for psych0t1c:
Thanks for your answer.
I know it's better to regharge battery before it drain that low, but as far as i know, the more you recharge your battery the less it lasts.
Besides, even if you own a high-capacity battery, it can happen anyway to remain with a flat battery and consequently without all programs in sd.
Consider that i do all my backups in sd card, than when i remain with low battery power, i can't do any backups.
Finally i can't even use my bluetooth headset.
For all those arguments i would have sd and bluetooth at my disposal even below 10% of battery power.
servizio said:
I know it's better to regharge battery before it drain that low, but as far as i know, the more you recharge your battery the less it lasts.
Click to expand...
Click to collapse
This is true for NiMH batterys, which are pretty old tech and no used in cellphones and PDAs anymore. In those you had a memory effect. Current Li-Ion or Li-polymer batteries can actually lose capacity when drained so low. It is usually suggested to recharge them when they go below 40% that way the battery will keep the full capacity for the longest time.
http://www.batteryuniversity.com/parttwo-34.htm
http://www.batteryuniversity.com/partone-23.htm
For all those arguments i would have sd and bluetooth at my disposal even below 10% of battery power.
Click to expand...
Click to collapse
It seems that this is not possible... I have not found any kind of hack or solution. Vijay talked about planning to take a close look at it, but I have not read anything about it since...
For psych0t1c:
psych0t1c wrote:
http://www.batteryuniversity.com/parttwo-34.htm
http://www.batteryuniversity.com/partone-23.htm
Click to expand...
Click to collapse
Very very Interesting web site.
You are right for the li-ion battery charge.
I didn't know it.
Good thing to know.
Thanks psych0t1c.
anyway, if someone knows any workarounds for my problem, any suggestions are welcome.
Didnt read the batteryuniversity page but there is no memory effect in Ni Mh.
Memory effect was in NiCd batteries.
Li Ion is preffred due to 2 reasons -
1. Power to weight ratio
2. Life
High capacity battery.
Hi,
I have an O2 IIi, with a 3600 mAh and I can go for more than 3 days with it.
When I get to 10% of the battery I can for more than 8 hours. Stand by, and maybe 40 minutes talk time.
Isn't there any registry hack to modify that 10% ?
It would be great to be able to change this to maybe 2 percent as my universal is often out of battery when i get to it and i have to wait a long time before i can listen to my music. Surely there is a registry hack for this one.
Greets.
How many time does your Prophet works until you get 0% battery?
Is it normal that mine only lasts for 2 days, being that it is always in standby?
Thanks.
usually 3-4 days, 2 days is not normal if it is always in standby, unless you have bluetooth and/or wifi on.
Suggest you also turn off the IR beam receiver, as well as the BT and WiFi. all of these consume power in standby.
You can also turn the backlight down. Mine runs at 25% backlight setting, which seems fine. Standby time is 5-7 days, although it's easy to run out of power in a couple of days with lots of calls and/or application usage.
Tom Tom 6 is the hungriest I found so far, running processor, backlight and BT. Then the S200 only lasts about 6 hours on battery!
Backlight and wifi does NOT consume anything in standby, as both are OFF.
BT and IRDA (quite) does only consume power if it's exchanging data with another device, even if the pda is turned on.
lastnikita said:
Backlight and wifi does NOT consume anything in standby, as both are OFF.
BT and IRDA (quite) does only consume power if it's exchanging data with another device, even if the pda is turned on.
Click to expand...
Click to collapse
Sorry, you are wrong about BT and IRDA. Let's take them one by one:
Mobile on - IRDA on - consumes power since it is all the time polling the sensor for incoming transmissions. Consumes more power when transferring data.
Mobile on - BT on - consumes power since the radio transceiver is on. Consumes more power when transferring data.
Mobile standby - IRDA on - does not consume any power, but cannot receive transmissions
Mobile standby - BT on - consumes power since transceiver is on, and transmissions bring mobile out of standby
Sorry, but I'm not
acer175 said:
Sorry, you are wrong about BT and IRDA. Let's take them one by one:
Mobile on - IRDA on - consumes power since it is all the time polling the sensor for incoming transmissions. Consumes more power when transferring data.
Mobile on - BT on - consumes power since the radio transceiver is on. Consumes more power when transferring data.
Mobile standby - IRDA on - does not consume any power, but cannot receive transmissions
Mobile standby - BT on - consumes power since transceiver is on, and transmissions bring mobile out of standby
Click to expand...
Click to collapse
The power consumptions you're talking about are insignificants, and won't reduce battery lifetime (except for a few minutes, but hey we don't want to spend time on this right ?)
If you don't want to run tests by yourself, please read this :
http://www.pocketpcmag.com/blogs/index.php?blog=3&p=706&more=1&c=1&tb=1&pb=1#more706
niko
lastnikita said:
The power consumptions you're talking about are insignificants, and won't reduce battery lifetime (except for a few minutes, but hey we don't want to spend time on this right ?)
If you don't want to run tests by yourself, please read this :
http://www.pocketpcmag.com/blogs/index.php?blog=3&p=706&more=1&c=1&tb=1&pb=1#more706
niko
Click to expand...
Click to collapse
thanks for the link, it was very informative, however negligible is not the same as nothing for someone trying to squeeze the most life out of a battery.
This does not change the fact of course that rjtd has a worse problem than just leaving BT and IR on!
I never ran such a test to tell so, don't know if mine would last longer than 2 days in standby..... but I guess it would
I usually have to charge every night, although it's not empty, I know it would be the day after ^^
Mine lasts for about a day and a half. It is overclocked when active (to 260Mhz) and i use navigation for about 1 hour a day average. Phone calls are usually ~15 minutes per day.
These are estimate values and may vary. BatteryStatus helps knowing about these as well
When i don't use navigation it lasts for two full days. Usually ends the 2 day period with about 5-10% battery.
a reply more direct to the original question - a friend of mine who applied the latest Dopod shipped ROM and is not a heavy user, i.e. calls, sms', standby, organiser, no games etc, has his battery lasting about 4 days.
Is there an application that could turn GPS ON or OFF manually in our HTC Advantage?
cktlcmd said:
Is there an application that could turn GPS ON or OFF manually in our HTC Advantage?
Click to expand...
Click to collapse
Usually, this is a function within the GPS application itself. In many of them, there is an option that allows you to decide whether GPS should still continue to run when you switch off the device. In many situation, I find it sensible to leave the GPS running while the device is switched off, so that you still know where you are while switching off the device to conserve power. If this is not what you want, you can always choose to switch the GPS off.
eaglesteve said:
Usually, this is a function within the GPS application itself. In many of them, there is an option that allows you to decide whether GPS should still continue to run when you switch off the device. In many situation, I find it sensible to leave the GPS running while the device is switched off, so that you still know where you are while switching off the device to conserve power. If this is not what you want, you can always choose to switch the GPS off.
Click to expand...
Click to collapse
I see your point. I was a little concerned how it will affect battery life if left ON all the time.
cktlcmd said:
I see your point. I was a little concerned how it will affect battery life if left ON all the time.
Click to expand...
Click to collapse
Glad that you do.
It is exactly because we try to conserve power that we allow switching off the device while keeping the GPS running. GPS applications, if not closed, are usually useless if the GPS is not running.
Since the GPS is a passive system I mean only "listen" don't emit signal the power used by that chip is a few even if it's connected.
The people argue that the GPS drains the battery but that is only half true. What really drains the battery is not the GPS itself is the program (Tomtom as an example) running in the CPU and the screen being on for long time. As I told you since the GPS chip only "listen" for signal shouldn't consume too much.
This is not the case of GSM, Wifi and Bluetooth and their associated chips. Those three systems emit signal draining the battery.
Best regards,
mahjong
P.S.: Sorry about my english... I hope you understand what I'm saying.
mahjong said:
Since the GPS is a passive system I mean only "listen" don't emit signal the power used by that chip is a few even if it's connected.
The people argue that the GPS drains the battery but that is only half true. What really drains the battery is not the GPS itself is the program (Tomtom as an example) running in the CPU and the screen being on for long time. As I told you since the GPS chip only "listen" for signal shouldn't consume too much.
This is not the case of GSM, Wifi and Bluetooth and their associated chips. Those three systems emit signal draining the battery.
Best regards,
mahjong
P.S.: Sorry about my english... I hope you understand what I'm saying.
Click to expand...
Click to collapse
Thanks. It's very clear to me. I find this to be very true. When I use my mobile golf scorer, after four hours of use, it uses less than 10% of the battery although GPS is on throughout. The difference is that I switch on and off the device between use.
But is there a way to switch on GPS and/or to monitor its status? Telenav seems to have troubles finding the GPS at times...
Thanks everyone. This thread actually answered all my questions. This is my first GPS phone, so I'm a newbie with regards to GPS.
How much percentage does your battery use in standby with edge and airplane mode (no connections)
Kumar's Rom V2.1 Premium
Radio: 2.11.50.20
Standby with only edge and I loose 10% in 8 hours.
Standby airplane mode I loose 8% in 8 hours.
Leave your phone on standby all night and post your results
dy2k said:
How much percentage does your battery use in standby with edge and airplane mode (no connections)
Kumar's Rom V2.1 Premium
Radio: 2.11.50.20
Standby with only edge and I loose 10% in 8 hours.
Standby airplane mode I loose 8% in 8 hours.
Leave your phone on standby all night and post your results
Click to expand...
Click to collapse
I'll test it tonight and let you how. However, I would expect it to drain slower than that in airplane mode, especially if the screen is left off. I put my TP2 in airplane mode to do the same test back when I first got my HD2, and the battery lasted for over 17 days before dying
Yeah.
I think I shall alternate radios and post results. But I don't think I would get different results if its in airplane mode due that it won't be looking for a signal. But who knows maybe it makes a difference.
I would think it would last a very long time, maybe over a week between charges if it was in airplane mode, and in sleep mode the entire time.
In sleep mode the CPU should be in a suspended mode, maybe waking occasionally to check for things like upcoming appointments. The only thing really consuming power would be the RAM. the type of RAM could extend the battery even more. DRAM has to be constantly refreshed, so you have the RAM chips and memory controller eating up power refreshing it constantly. If its SRAM, it can run for a VERY long time on very little power. I'm not sure if the HD2 had DRAM or SRAM, likely its DRAM though
I have a 4MB PCMCIA SRAM card that can hold its contents for a few years using the small CR2025 button cell in the card. DRAM would probably drain a button cell in a few hours.
Ok...some interesting results:
I tested this last night by charging my HD2 all the way to 100% just before bed, and then letting it sit on my desk all night in airplane mode, with the screen off....
7 hours later, the batt had drained 7%
As d0ug mentioned, this is FAR faster of a drain that we should expect when running the phone with all the radios completely off like that...in fact, it's about 4x the rate of drain (percentage of total capacity vs time) that I got on my TP2 when running the same experiment.
So, my conclusion is that there's obviously something on the phone that's running down the battery besides the usual suspects, and nothing obvious I can see or think of offhand.
ahh thanks for the info. Hmmm that throws the 490 hrs in standby that is advertised of the window. But with the 1 ghz processor I am guessing 100 hrs in standby is good. Also I read that some HD2s drain slower after 50%
dy2k said:
ahh thanks for the info. Hmmm that throws the 490 hrs in standby that is advertised of the window. But with the 1 ghz processor I am guessing 100 hrs in standby is good. Also I read that some HD2s drain slower after 50%
Click to expand...
Click to collapse
It still seems too fast to me, for the drain when the radios is off. I'm going to repeat the experiment for the next couple of nights...I think tonight I'll take the SD card out (as well as leaving it in airplane mode) and see if that makes any difference.
What raises the red flag for me is that the rate of drain I saw last night isn't significantly less than what I see when I leave the radios on all night, and in full 3G
Sounds to me like the processor is not going completely to sleep, When i say to sleep i literally mean the processor clock being stopped. Ideally that's what it should be doing until something like an incoming call, message, appointment, etc triggers an interrupt to wake the processor
As we already know from the overclocking util that exists, the HD2 does not run 1ghz all the time. The processor speed steps depending on demand. when its on but idle the processor clock is suspected to have dropped down somewhere in the 100-200mhz range, but a bug in that software does not display the actual processor speed in the lowest range.
I wonder if the processor is constantly on at that 100-200mhz rate even while asleep? or its just some very power hungry ram being refreshed? 576mb is a lot of ram cells to be refreshing several times a second to keep the data in them valid.
d0ug said:
Sounds to me like the processor is not going completely to sleep, When i say to sleep i literally mean the processor clock being stopped. Ideally that's what it should be doing until something like an incoming call, message, appointment, etc triggers an interrupt to wake the processor
As we already know from the overclocking util that exists, the HD2 does not run 1ghz all the time. The processor speed steps depending on demand. when its on but idle the processor clock is suspected to have dropped down somewhere in the 100-200mhz range, but a bug in that software does not display the actual processor speed in the lowest range.
I wonder if the processor is constantly on at that 100-200mhz rate even while asleep? or its just some very power hungry ram being refreshed? 576mb is a lot of ram cells to be refreshing several times a second to keep the data in them valid.
Click to expand...
Click to collapse
I suspect the same, that the proc or memory are still drawing a surprisingly large amount of current when the phone is "idle". I don't know if it's also possible that there's something keeping power fed to the SD card at that time, tonight's test will confirm or deny that theory.
Wherever the draw is, it's obviously something unique to this phone, so I guess it could even be related to the way the hardware drivers are handling *something*..??
sirphunkee said:
I suspect the same, that the proc or memory are still drawing a surprisingly large amount of current when the phone is "idle". I don't know if it's also possible that there's something keeping power fed to the SD card at that time, tonight's test will confirm or deny that theory.
Wherever the draw is, it's obviously something unique to this phone, so I guess it could even be related to the way the hardware drivers are handling *something*..??
Click to expand...
Click to collapse
The results of your test will be interesting, but i highly suspect that its not the SD card. there should be very little current draw from an idle SD card. Flash memory needs no power to retain its contents, so the only power an idle SD card should be consuming is whatever is needed to power the flash controller enough to sit and wait for a read/write command.
Of course that doesn't mean that the firmware on the controller of particular SD cards isn't faulty causing a huge power draw, of even an installed app on the phone constantly reading/writing something on the SD card.
d0ug said:
Of course that doesn't mean that the firmware on the controller of particular SD cards isn't faulty causing a huge power draw, of even an installed app on the phone constantly reading/writing something on the SD card.
Click to expand...
Click to collapse
Bingo and bingo, that's exactly what I want to eliminate first before looking for other causes. By chance, is there a way to look at the actual current draw on the batt in real time?
sirphunkee said:
Bingo and bingo, that's exactly what I want to eliminate first before looking for other causes. By chance, is there a way to look at the actual current draw on the batt in real time?
Click to expand...
Click to collapse
sure, you would need to find some way to get some jumper wires in between the battery and the HD2 so that you could put a multimeter in between the battery and HD2. then you could see the MA being drawn from the battery in realtime on the
you might be able to get creative with a piece of paper with a layer of foil on each side that doesnt touch eachother. you would insert this between the HD2 contact and battery for only one of the contacts. you could then use alligator clips to connect the multimeter by clamping the paper, but insulating the opposite side of each clip so that you dont create a short that can route around the meter
There used to be a battery monitor software i used on my old wizard that would also show the ma being consumed, updated every 10 sec or so. I dont remember what the software was called and im pretty sure it was probably hardware specific for the omap chipset in that phone
d0ug said:
sure, you would need to find some way to get some jumper wires in between the battery and the HD2 so that you could put a multimeter in between the battery and HD2. then you could see the MA being drawn from the battery in realtime on the
you might be able to get creative with a piece of paper with a layer of foil on each side that doesnt touch eachother. you would insert this between the HD2 contact and battery for only one of the contacts. you could then use alligator clips to connect the multimeter by clamping the paper, but insulating the opposite side of each clip so that you dont create a short that can route around the meter
There used to be a battery monitor software i used on my old wizard that would also show the ma being consumed, updated every 10 sec or so. I dont remember what the software was called and im pretty sure it was probably hardware specific for the omap chipset in that phone
Click to expand...
Click to collapse
LOL ok yes I guess that's one way to achieve that I confess I was more just hoping that the batt's circuitry registered/reported the draw in way that could be queried through a driver, etc. I think I'd seen the same app you're referring to back when I had my wizard, but other than using it to maybe point us in the right direction it probably wouldn't be of any use otherwise on this hardware.
So, I did run the test last night w/o the SD card installed, and it actually looks like it did indeed drain slower that way...only about 2% (+/- .5) over the same 7 hour period. However, this just means I want to go back and test it a little more thoroughly that way now, and then with the card in again, just to repeat/validate these results.
However, if it does indeed bear out that the background drain is significantly less with the card removed...I guess that might mean that having the card inserted prevents the proc from idling down as much..?? Not sure of the best way to test/isolate that.
sirphunkee said:
LOL ok yes I guess that's one way to achieve that I confess I was more just hoping that the batt's circuitry registered/reported the draw in way that could be queried through a driver, etc. I think I'd seen the same app you're referring to back when I had my wizard, but other than using it to maybe point us in the right direction it probably wouldn't be of any use otherwise on this hardware.
So, I did run the test last night w/o the SD card installed, and it actually looks like it did indeed drain slower that way...only about 2% (+/- .5) over the same 7 hour period. However, this just means I want to go back and test it a little more thoroughly that way now, and then with the card in again, just to repeat/validate these results.
However, if it does indeed bear out that the background drain is significantly less with the card removed...I guess that might mean that having the card inserted prevents the proc from idling down as much..?? Not sure of the best way to test/isolate that.
Click to expand...
Click to collapse
Yeah now that I think of it, that utility was also an overclocking util for the wizard, so it was most like only going to work on the wizard, or at least only phones using that same omap chip.
Interesting the SD card consumes that much power, are you using the stock 16gig or another card? I wonder if different cards produce different results? Im still using my stock 16gig here, been thinking bout upgrading to a class 6, but i kinda want to get a 32gig card too, but those aren't available in class 6 yet.
d0ug said:
Yeah now that I think of it, that utility was also an overclocking util for the wizard, so it was most like only going to work on the wizard, or at least only phones using that same omap chip.
Interesting the SD card consumes that much power, are you using the stock 16gig or another card? I wonder if different cards produce different results? Im still using my stock 16gig here, been thinking bout upgrading to a class 6, but i kinda want to get a 32gig card too, but those aren't available in class 6 yet.
Click to expand...
Click to collapse
Yes, stock 16GB card. Although, I'd never reformatted it since I bought the phone, but I did last night before I pulled it out for the test. I'm watching the drain through the day today to see if that has any effect during normal use, for now anyway. I'll be running the overnight test a few more times w and w/o the card.
Ah interesting. Last night I charged my phone to 100% and left the 3G on and it drained about 10% in 8 hours which is the same on edge. I also notice that when I used the 3g in the morning I saw the 3g icon on top connecting to the network. I am guessing it goes to standby when not being used for a time. I also switched from 3g to edge everytime I wanted to use the internet but am considering to just leave it on 3g due that I think it consumes more power changing the connection everytime I want to use 3g.
Well I guess we need a tweak to put the processor to real standby when the phone's screen has been off for a long time.
I usually charge it before I go to sleep and not leave it on the charger. When I wake up about 6.5 hours later it usually reads 97%. So it drains 3% in over 6 hours. Not too bad. I'm not in airline mode but my data is off since I'm on prepaid. Wifi and phone are on but I think wifi switches off when it goes to standby. My activesync is also set to manual so no downloading during the night.
buzz killington what radio and rom do you use?
I'm using the stock rom and radio without the update.
Rom: 2.10.531.1 (82076)
Radio: 2.08.50.08_2
I should probably add, when I had the activesync on, I'd wake up and it'd have 93%, so it seems activesync uses quite a bit of power.
buzz killington said:
I'm using the stock rom and radio without the update.
Rom: 2.10.531.1 (82076)
Radio: 2.08.50.08_2
I should probably add, when I had the activesync on, I'd wake up and it'd have 93%, so it seems activesync uses quite a bit of power.
Click to expand...
Click to collapse
Hey buzz...you were using activesync over wifi, do I have that correct?
Been trolling the forums, for a while, and I am wondering.. what effects battery life the most.. type of windows rom? the radio? kernal? or Android build?...
thanks guys.
Antartica or Panama? Where, when, how?
heaetman74 said:
Been trolling the forums, for a while, and I am wondering.. what effects battery life the most.. type of windows rom? the radio? kernal? or Android build?...
thanks guys.
Click to expand...
Click to collapse
Operating system? Screen colors? Flashlight for movies or photos?
Battery - energy loss or charge? Age - recycles from deep discharge? Plugged for longer than needed? Air temperature or silicon cased? Temperature with heavy energy drain?
Not a simple question.
Retired (medical) IT Consultant
As far as software goes, the biggest killers of battery I've noticed have been push notifications and wifi. Turning both of them off almost doubled my battery life. I now have my emails synched every 10 or 15 minutes instead.
In addition to wifi and push, a big one maybe the biggest, which is often overlooked, is screen brightness. These big giant screens burn a lot of battery. Keeping it as dim as you can stand it will actually save quite a fair share of battery
heaetman74 said:
Been trolling the forums, for a while, and I am wondering.. what effects battery life the most.. type of windows rom? the radio? kernal? or Android build?...
thanks guys.
Click to expand...
Click to collapse
YOU THE USER
if you have researched and learned enough to know what needs to be done
then . . . .
huggs said:
In addition to wifi and push, a big one maybe the biggest, which is often overlooked, is screen brightness. These big giant screens burn a lot of battery. Keeping it as dim as you can stand it will actually save quite a fair share of battery
Click to expand...
Click to collapse
I feel silly for not mentioning that one myself now
heres a funny thing i found, i replaced my Apacer 8GB Class 4 card with a Sony 8GB class 4 card. the phone use to hang with the apacer card.
the thing is, ever since i´ve made the change, the phone sucks up twice as much power.
Theres great ways to make your battery last here too:
http://forum.xda-developers.com/showthread.php?t=827762
Especially #8
Calibrating Android's battery read will allow Android to fully charge your battery, and if you have battery profiles in setcpu, then the app will scale your processor speed by a more accurate reading, giving you longer battery life. I did it on the couple of builds I use most, and it really does make a difference
And dont feel silly john, I sometimes take my enormous screen for granted too
Edit: hmmm maybe my class 2 is why i get good battery life, maybe a slower r/w speed sucks less juice?
well, i know all of the normal tricks.. like screen brightness, wifi off, email push...
i am just looking for a windows rom, a radio, and an android rom, to get the best battery life...
thanks again guys.
Have a look at my signature.
Data enabled, push every hour only 5mA in standby.
If it is in airplane mode it only uses 2mA most of the time. That's quiet good
From what I can tell, the single most important factor for better battery life is using an auto boot app, such as Exceller's, to boot into Android soon as possible. I set mine to auto boot in 3sec. If you let WM/Sense boot fully, you will experience higher than normal battery drain; around 60-70 mA drain in standby. Also, try installing Advanced Configuration Tool in WM and enable all options under Power Management. Have tried these techniques with pretty much every WM Rom and Android combo and average around 3-9 mA draw in standby with wifi, sync, gps and data all enabled. This translates to about a day and a half of moderate use for me. Also, remember that Sense builds tend to use slightly more battery than non-sense builds.
This method really works! The simplest way!
reocej said:
From what I can tell, the single most important factor for better battery life is using an auto boot app, such as Exceller's, to boot into Android soon as possible. I set mine to auto boot in 3sec (have asked for and If you let WM/Sense boot fully, you will experience higher than normal battery drain. Also, try installing Advanced Configuration Tool in WM and enable all options under Power Management. Have tried these techniques with pretty much every WM Rom and Android combo and average around 3-9 mA draw in standby with wifi, sync, gps and data all enabled. This translates to about a day and a half of moderate use for me. Also, remember that Sense builds tend to use slightly more battery than non-sense builds.
Click to expand...
Click to collapse
I have trying different things for some times as why my HD2 was always 60mA+ power drain but some others reported as low as 5mA in standby mode. I tried different builds and different settings but none worked. I almost want to flash to change my stock rom or give up the idea of using Android.
Thanks to you! Follow your way, I now only 9mA with my stock rom. A considerable improvement in battery standby.
Thank you very much.
loonglsk said:
I have trying different things for some times as why my HD2 was always 60mA+ power drain but some others reported as low as 5mA in standby mode. I tried different builds and different settings but none worked. I almost want to flash to change my stock rom or give up the idea of using Android.
Thanks to you! Follow your way, I now only 9mA with my stock rom. A considerable improvement in battery standby.
Thank you very much.
Click to expand...
Click to collapse
Glad I could help. Happy Androiding!
my phone tells me power in mV how does this equate to mA?
Droski said:
my phone tells me power in mV how does this equate to mA?
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It doesn't really, mV is a measure of state (what condition your battery is in), mA is a measure of change (how much power is currently leaving/entering your battery).
Download current widget, free from market, to track the current (= in mA)
loonglsk said:
I have trying different things for some times as why my HD2 was always 60mA+ power drain but some others reported as low as 5mA in standby mode. I tried different builds and different settings but none worked. I almost want to flash to change my stock rom or give up the idea of using Android.
Thanks to you! Follow your way, I now only 9mA with my stock rom. A considerable improvement in battery standby.
Thank you very much.
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What is an application u see HD2 Android power drain in standby-mode?
PeeHoo said:
What is an application u see HD2 Android power drain in standby-mode?
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Current Widget. Set it to update every 60 secs, and then leave your screen off for more than 60 secs, turn the screen back on, and check the widget.
Battery drain with screen off should be somewhere between 5-9 mA
Nice tips here guys...
My battery meter in the status bar looks about 60-70% full, but battery widgets say i have about 50%.
Does this mean that I need to calibrate?
I tried to delete the battery stats with Droid Explorer but it seems to be in read only? (It doesnt do anything when i click delete).
I guess I'll set up ADB and delete that way.
Also I seem to get better battery without LED me know, (why do i need this?)
Runnig MDJ revolution, 2.08.50 radio, stock WM ROM.
GeoMil said:
Nice tips here guys...
My battery meter in the status bar looks about 60-70% full, but battery widgets say i have about 50%.
Does this mean that I need to calibrate?
I tried to delete the battery stats with Droid Explorer but it seems to be in read only? (It doesnt do anything when i click delete).
I guess I'll set up ADB and delete that way.
Also I seem to get better battery without LED me know, (why do i need this?)
Runnig MDJ revolution, 2.08.50 radio, stock WM ROM.
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Just run terminal emulator on your phone and type:
su
rm /data/system/batterystats.bin
oh, you can do this on the phone.
Thanks bro!
I hope to see improvements as my theory that the status bar battery reading vs widget battery reading being so different = it needs calibration.
Edit
I am now using Exceller's auto boot, and the my draw peaks are waaay lower, but the idle has gone up! (60-80 now...)