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Anyone has any idea why do we need to turn on "disable usb charging" ?
Settings -> Power -> Advanced
[ x ] When device is turned on, do not charge the battery when connected to the PC
In what situation?
One thing that I can think of ... is to preserve the battery to have a good condition by only charging if you have "enough time". That means, to charge until 100% and beyond.
Any more valid / good reason?
Thanks.
gogol said:
Anyone has any idea why do we need to turn on "disable usb charging" ?
Settings -> Power -> Advanced
[ x ] When device is turned on, do not charge the battery when connected to the PC
In what situation?
One thing that I can think of ... is to preserve the battery to have a good condition by only charging if you have "enough time". That means, to charge until 100% and beyond.
Any more valid / good reason?
Thanks.
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Click to collapse
In my case, i thin is better to make three or four completes cycles of charge/discharge, so for the moment i use this option to prevent charging while i connect to PC to install or trasfer something....after complete discharge, i charge full...
Regards.
Hi,
It's probably to preserve Laptop/Notebook battery when on the go...
alexxo said:
Hi,
It's probably to preserve Laptop/Notebook battery when on the go...
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Click to collapse
Yes, this is another one.... i don't have a laptop so i don't think in it
I reckon its so you can plug it into a unpowered USB hub which is near its limit of how much power it can supply...
g
charging
i think it might have something to do with the amps/volts, i'm not a scientist as you could already tell, but i do know that you shouldn't use a motorola charger to charge an htc product. i used a razr charger to charge my dash once and it killed the battery pretty well. so i figure you shouldnt use a non-approved charger to charge your device, be it via laptop or any other charger that didnt come in the box
My bet is that this is about battery life. I think that these batteries do best (live longest) if they go through complete charge-discharge cycles at least every 30 days.
I plug my TyTn into my computer when I am in the office and, unlike ACtiveSync, the charge always works!
I vote for the portable use theory as well, so you don't drain the battery on a laptop or unpowered hub that can't supply the additional current.
RemE said:
I vote for the portable use theory as well, so you don't drain the battery on a laptop or unpowered hub that can't supply the additional current.
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I'm with you on this one. Current gen batteries don't need to be cycled so much for optimal performance. However, charging your phone via USB will drain your PC's battery more quickly if you are on the go.
The Kaiser draws a lot of current. Even when charging by USB I have seen the battery level dropping.
I have seen quite frequently USB ports being disabled due to too high current draw, making the connection unstable. If this was a problem this option would prevent it.
Surur
quite a few posts here about li-ion batteries and how best to look after them:
http://www.modaco.com/Warning-Battery-Chargin-t233233.html
That's good stuff especially the Wiki on them. I use a lot of lithiums at work and play. Bottom line, don't run them flat, ever, that's the only thing that will ruin them quickly. Most devices have protection circuitry to prevent this by shutting down. When you get to this point the battery should be charged ASAP because the small amount of drainage in the device will take the battery past the critical low point if left in this very low state for any length of time (say more than a few days).
Cycling really doesn't do much for lithiums, their total capacity decreases from date of manufacture slowly over time, weather you use them alot or not. This is unlike other batteries.
Best storage state for lithiums is 50%, not full. But in a phone, best rule is to just top them up whenever possible, plus you never know when you are going to get that marathon phone call
As a few others have alluded to, this is used when you're tethering on the go. WM5 / 8525 doesn't have this switch, so when tethering via USB on the 8525, it will literally suck the life out of my laptop battery.
Glad to hear that this switch was added in WM6 / Kaiser.
The best battery information I found is here: http://www.batteryuniversity.com/parttwo-34.htm
Summary (for li-ion batteries, as in Kaiser):
1. Avoid full discharge; partial discharge/charge cycle is better. However, a full charge/discharge cycle once every 30 times is useful to keep battery gauge calibrated correctly (doesn't really help longevity, but prevents erroneous gauge from forcing early retirement of the battery).
2. Avoid prolonged storage at full charge and/or high heat (optimal charge is ~40%).
3. Avoid high rates of charge or discharge. Presumably the charge rate is already set at an acceptable rate by the manufacturer; as for discharge, it probably can't be helped if you need to run some ultra-high load applications on the phone. One thing this confirms: it is good to charge the battery using the USB; the possibly lower voltage available during the USB charge is helping, not hurting, the battery. So definitely, the "do not charge when plugged in" option is only to save your laptop battery, not to help the phone battery.
As said already in this thread, its so you can connect to a non-powered usb hub or a laptop usb port that can't supply enough.
WM devices normally detect supplied power and go into charge mode before they are polled by the PC/Laptop via Activesync for data transfer. If the charge system pulls the port down then data transfer is disrupted.
When tethered to a laptop and the laptop is running on battery, you may want to disable charging to conserve the laptop's battery.
This is the answer I got from batteries4less where I bought a replacement battery for my 8525.
You should generally charge your battery every night. It is not good to do
it continually during the day. It will wear it down faster. Thank you
Alix Kane
CBW Customer Service Rep.
Cellphone Battery Warehouse
www.batteries4less.com
1800-300-9993
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By the way.....shameless plug: I ordered a battery late on thursday afternoon and received my replacement battery on saturday and installed it in the phone. On monday I bought the Tilt 8925 and then emailed that I bought a new phone and asked them if I could exchange it for a Tilt 8925 battery and the next email I received from them about an hour or so later said the new battery was on the way and to send the 8525 battery back in that package.
These guys will get my battery business from now on.
Years ago i had a t-mobile dash also known as an htc excalibur, and i would use it to tether to my computer for 6 to 8 hours a day as a high speed modem and low and behold, it burnt out the battery. I bought a new battery and switched to Kaiser OS that had an option to disable usb charging and never had a problem after that... Now if you only connect to a computer to transfer a few files back and forth every onle in a while then there probably wont be a problem because that is not going to drain your battery very fast so it will only charge every once in a while and that is ok. But when you tether to a computer to use your phone as a high speed modem it takes ALOT of battery power. I saw a post in a different thread here on xda that said that when your battery reaches 100% that it stops charging. Yes that is correct. But even though the battery will stop charging at 100%. As soon as it drops 5 or 10 % is starts charging again and when you tether your phone as a modem it will drop 5 or 10% within minutes so your phone will basically be charging nonstop which is defiantly not good for a battery and that my friends is what the disable usb charging is for.
Just as an added statement for those of you that disagree with what i have said. Try it yourself and see what happens. Tether your phone to your computer as a modem and surf the net, and play games, and download stuff for 6 or more hours a day. I bet in just a few weeks or months you will be replacing your battery too.
Reason to turn off phone charging when connected to PC
I installed "Syncois iOS & Android Manager FREE" to back up my Android phone data to my PC. The program would not work if my phone was charging when connected to my PC, it told me. So, I had to turn that charging option off. Outside of that, I will always have my phone charge when connected to my PC. Hope this helps!
I was just wondering what the correct way to charge your phone is. I have an AT&T tilt. When the battery would get to like 3% I would just turn it off and then plug in my AC wall charger that came with it and leave it until it was fully charged. But I want to leave my phone on all the time so I dont miss calls, So when I leave it on while charging the phone gets pretty warm and the screen turns on by itself randomly. And when i plugged it in the other night before i went to bed (phone was still on whole night) in the morning I went to wake it up and it wouldnt. When i slid the keyboard out it lit up and everything so it was definitely on, but the screen wouldnt come on no matter what I did. Am i not suppose to be charging it while the phone is still on or leaving it plugged in for a long time after the battery has reached its full charge using the AC wall charger that came with it. Should I instead by one of those cradle chargers cuz dont they have a thing where once your battery is full, it will stop charging it? Any feedback would be really appreciated. Thank you.
hmm i dont really know bout u
but i've really never turned off my phone....the tytnII or any of my previous phones i would just leave it on day and nite and i go to bed i charge it or any time when i'm home if its low on battery
kinda wild how many people torture their batts on acount of that old myth
http://forum.xda-developers.com/showthread.php?t=355318&highlight=batt+myth
How are you charging it? Supplied wall charger or USB port?
The supplied wall charger will turn it on initially and it should then turn back to standby as set by your power settings. Make sure you don't have it set to ramain on when on external power.
USB charge connection to PC or laptop will keep polling the phone if Activesync is enabled and turn it on continuosly.
Some external chargers, such as the ones for the previous TyTyn (not TyTynII) required two pins connected to enable charging and if you are using one of those the TyTynII thinks a data connection is being made and randomly powers up.
It's been my experience to keep the battery on a charger whenever possible. Those batteries "like" to be topped off. I have killed a couple of batteries by running them down all the way and trying to bring them back to life. Li Ion batteries are not like NiCads
When I'm driving, it's plugged in. At home, it's on my desk charging. While I sleep, it's charging on my night stand.
I found charging when every possible, and keeping it topped off as much as possible will enable the battery to last longer for those times you can't get to a charger. This has been the case for all the HTC phones I've used.
This problem just started last night and I can't figure out what's the cause of it. After a few hours into charging, the phone just turns itself on and charging stops!
I'm running stock rom with a few performance tweaks. I'm not sure whether this's software or hardware related and if a hard reset would fix anything.
Cheers.
Are you charging using a PC or directly from adapter?
if from PC, click on the battery icon when the device is on and make sure that "When device is turned on, do not charge the battery when connected to the PC." is unchecked
I use the adapter to charge, I did try to untick the option afterwards and now just osberving if it does it again.
May be this's another bug when it's supposedly only applicable when charged from USB.
Charging issue and low battery life
Hi, I have had my X1 for 4 days now and overall I am very happy with the features, and I have obtained a lot of very useful tips from the XDA forum, thanks. However I am experiencing problems charging the phone and also not happy with the battery life. Last night I left the phone plugged into the USB of the pc that I installed activesync on (pc was, of course, also on) I switched the phone off and ensured that the charging light indicators were flashing. This morning the charging indicators were off but the phone was only partially charged. I then plugged the usb cable into the mains charger and the phone charged to full in 1.5 hours. Does this mean that charging via the pc is inefficient? During the day I made no calls and sent 2 texts, I did have messenger and skype running although I put the phone into sleep mode. Its now about 8pm and the battery has died. I have plugged the usb into my laptop (which does not have the activesync software on it) the charging lights are flashing but I dont think that the phone is charging as the battery is draining. I read on this forum that you must have activesync installed on the pc that you want to charge the phone on, but why is this. Whats the point of that, the whole point of being able to charge via usb is that you can top up anytime you are near a pc, and looking at the battery life I assume I will need to top up a lot. Can I have your thoughts please.
i have been in the same position.
it's probably because your laptop / pc is in hibernate mode / power saving mode..hence it doesnt charge.
try disabling it and see how it goes
Thanks for the prompt reply Berlinberlin
Hi I can confirm that my PC is set to turn off monitor after 20mins and to never turn off Hard Disks and never go into standby and never hibernate. So I don't think that this is the problem but thanks for your thoughts
How long does/should it take to fully charge the phone via usb? How long does it take yours to charge? Since I wrote the post above I have had my phone plugged into my laptop but with the phone swithed off, the charging indicators lights are pulsating. I have now turned the phone on and the battery is 40% charged from being nearly totally depleted (about one hour of charging) . I do not have Activesync on this pc, so the phone will charge on any PC, I assume.
hello.
once i had one x1 charged via usb over night (with a pc with active sync)
the battery depleted the next morning and it doesnt turn on again
so maybe it's better to quit active sync before charging?
toucam said:
This problem just started last night and I can't figure out what's the cause of it. After a few hours into charging, the phone just turns itself on and charging stops!
I'm running stock rom with a few performance tweaks. I'm not sure whether this's software or hardware related and if a hard reset would fix anything.
Cheers.
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Click to collapse
The charging problem I've observed has a different effect:
when on charge using the adaptor, the battery charges OK to full and then charging ceases (as it should do)
BUT
if the X1i is connected to WiFi on my LAN, after a time (maybe 30 mins), it commences to recharge and never stops, so the battery can become dangerously overheated.
Disconnecting from WiFi and soft-reset seems to bring the system back to normal.
At this stage I don't know the root cause, but I have a new battery on order. When this turns up, I'll try the same routine and post results. Obviously, I suspect (hope, too) that the "smarts" in the battery are faulty.
x1 charging problem
I' have the same problem with my x1 charging.
The phone after i started charging, turn on and stop the charging.
In the mornig the battery is low.
Is there any solution that fix the problem?
ianl8888 said:
The charging problem I've observed has a different effect:
when on charge using the adaptor, the battery charges OK to full and then charging ceases (as it should do)
BUT
if the X1i is connected to WiFi on my LAN, after a time (maybe 30 mins), it commences to recharge and never stops, so the battery can become dangerously overheated.
Disconnecting from WiFi and soft-reset seems to bring the system back to normal.
At this stage I don't know the root cause, but I have a new battery on order. When this turns up, I'll try the same routine and post results. Obviously, I suspect (hope, too) that the "smarts" in the battery are faulty.
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Click to collapse
In your case I tend to think the problem is with Wi-Fi using more battery than what it's gaining through charging. I had similar problem with a generic mini-USB charger. Most charging problems are associated with either battery or charger itself.
Even i had a same issue,
But i luckily remembered the setting which i had changed,
Try this,
Setting`s->System-> Power-> Advanced Tab
{code}
Make sure u have selected this option and set it to minimum value,
"Turn off device if not used for"
{code}
Hope this solves issue
After testing last night and the night before. I have the result. 1st night I had the DS7 turned off, morning I woke up, was fully charged. Last night I left the device on. Woke up overnight still wasnt charged up. Now this doesnt seem promising for USB charging..
I know from G1 the AC charge always lasted longer then USB charge. Since USB can only charge to a maximum voltage. Guess the DS7 on 4g mode just uses more then it can charge. Kinda crappy. =/
I agree with that. I think it can be solved with a custom ROM using an optimized Kernel. That's what happened to the HTC G2, with the custom Kernel, it runs smoothly and battery last as hell.
Can you underclock with the stock kernel using something like SetCPU? Maybe with the screen off and set to a minimum clock speed it would do better.
SetCPU does indeed work. But I think it already lowers the CPU on its own when the screen is off. I think it has more to do with the 4g radio battery drain then it does the CPU.
The Streak 7 does not trickle charge via USB. It must be plugged in to charge.
Sent from my Dell Streak 7 using XDA App
Well I can confirm that too. Came to report that it wont matter about radio or cpu speed. USB doesnt charge the battery but it DOES power the device. So USB tethering will keep the device on and tethered and not drain the battery, it just wont charge it.
HOWEVER it WILL charge the battery IF the device is turned off via usb.
This is very common with tablet devices these days. Many Android tablets as well as the iPad do this. A USB "Y" cable connected to 2 USB ports simultaneously works though. Otherwise there simply aren't enough amps going to the unit. Newer USB ports that provide more than the 5V / 1 AMP current output also don't have this issue.
Ok update on something:
While Device is off, It charges to full. Plain and simple.
While device is on and usb tethering only to your PC. No battery drain, no charging. (Which is GOOD!)
While device is on and you are playing a game like gun bros or something more intensive while 4g radio is on or so, battery will drain.
So it does seem that if you do alot while on USB you will still get a drain, just not as fast. But since it doesnt charge it at all. Losing even 1% at a time.. is =/
Hi,
I have an SGS GT-I9000 (T-Mobile UK), I had stock ROM 2.1-update1 a week ago (this was my Mum's phone, now mine). As I already have one phone I decided to root this and install CM7 using the latest wiki instructions (Heimdall, ROM Manager) including CWM, this rooted, unlocked, updated.. Of note, my phone does not have the 3BR, I have not yet fixed that with Odin, I have made a 301K Jig. The phone also has a forced upload mode immediately displayed while phone on and pressing Home+Up.
After installing CM7 (phone wasn't fully charged during install, a friend was helping me and it was taking too long to charge again after failing to unlock the network via adb for some time) the battery was not full, I used the phone for a while and plugged in later. The problem is that it got to ~54% and didn't move for an hour or so, battery would quickly drop a percent or two again. At this point the iPod wall socket displaying as "charging (USB)" in About.
I reset the battery stats in CWM which did nothing to the current battery level reading of 54%. I flattened the battery with GPS, speaker, WiFi tether, etc. got to 1% then turned off after a while, would not turn on again. So I charged with an HTC wall charger, which forces the phone to be fully awake thanks to CM7, also showing AC as the source this time, but although the battery quickly reached 10% and 30%, it did not pass 66% after more than 12 hours charging.
I am happy with the usage (~day) I get from this phone, but I would like it to say 100% occasionally.
I will flatten the battery again, then plug in to switch on, followed immediately by reboot into recovery (an option in CM), then I will leave it over night ~7-8 hours charging in recovery, and perform another stats wipe. I have read that without 3BR I may never get my phone on again (low bat boot loop) if it gets too flat, I hope that doesn't happen (didn't last time, before I read that).
Any help?
Also, there is one other thread about never fully charging: http://forum.xda-developers.com/showthread.php?t=780340 but the OP says that it displays 100% but keeps on charging anyway.
Just run it through a full charge cycle 2 or 3 times, its just lost is head,it comes back,...........im on insanity cm 022.....happened to me
Sent from my GT-I9000 using XDA Premium App
Still not charging
Hi, thanks for your advice, I have now completed several full cycles and with patience I am getting 100%. The problem still exists though, it take 24-26 hours to charge from 0 to 100% even with flight mode on for half of that time, longer if not. I am using an AC charger (as recognised in the battery menu). I do get about 12 hours of light usage from the phone, but will lose the first 10% while browsing the internet even while still plugged in.
Any further advice would be greatly appreciated. (I have tried a couple of different wires and plugs, some say USB, others AC).
S
P.S. I am considering finding a stock ROM and fixed 3BR partition and reverting back to a better than before stock, unlocked, unrooted system.
sebble said:
Hi, thanks for your advice, I have now completed several full cycles and with patience I am getting 100%. The problem still exists though, it take 24-26 hours to charge from 0 to 100% even with flight mode on for half of that time, longer if not. I am using an AC charger (as recognised in the battery menu). I do get about 12 hours of light usage from the phone, but will lose the first 10% while browsing the internet even while still plugged in.
Any further advice would be greatly appreciated. (I have tried a couple of different wires and plugs, some say USB, others AC).
S
P.S. I am considering finding a stock ROM and fixed 3BR partition and reverting back to a better than before stock, unlocked, unrooted system.
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Baring in mind that batteries never charge to 100% dude even when it says it has, this is a safety feature to prevent over charging and exploding batteries, I'd go through the cycle again, let your battery go dead, try switching it on to make sure the batteries dead, then whilst off, charge your phone till full, then unplug and plug in again to make sure its full, then if its full boot immediately into recovery and delete battery stats, repeat these steps another 2-3 times bud
Sent from my GT-I9000 using XDA Premium App
djice000 said:
Baring in mind that batteries never charge to 100% dude even when it says it has, this is a safety feature to prevent over charging and exploding batteries, I'd go through the cycle again, let your battery go dead, try switching it on to make sure the batteries dead, then whilst off, charge your phone till full, then unplug and plug in again to make sure its full, then if its full boot immediately into recovery and delete battery stats and boot phone, repeat these steps another 2-3 times bud
Sent from my GT-I9000 using XDA Premium App
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Sent from my GT-I9000 using XDA Premium App
Cheers, I can't charge with the phone off though, another reason for going back to stock maybe (or removing clockworkmod). I would have expected batteries to trail off near the limits, but the charge rate is fairly consistent throughout. I shall keep cycling the battery and resetting the stats though, so far no improvement, it's just an inconvenience to be without a phone every other day.
I know the feeling bud and I know its tedious, but keep at it and it should get better pretty soon so long as you stick to the cycle
Sent from my GT-I9000 using XDA Premium App