Database Users

usb charging turn on/off

I need some help.
I want to turn on/off the usb charging for my MDA pro from T-Mobile.
I find here in the forum the following key
"HKEY_LOCAL_MACHINE\Drivers\BuiltIn\usbfndrv".
But this key does not exist in my MDA pro. There is only the key
"HKEY_LOCAL_MACHINE\Drivers\BuiltIn\usbfn".
Do you have an idee how I can turn on/off the usb charging anyway?
Thanks for helping.
Barlow

AFAIK the USB port is the only way to charge your Uni.
It doesn't make any difference to the operation of the device if it is charging, you can still set it to turn off after a time, you can set the screen brightness the same as when running on battery.
I would imagine that (and if I'm wrong, please tell me) the charging circuit is hard wired into the port and the battery so that you can still charge even with no OS on the device.
Is there a reason you would like to disable charging?

I want to turn off because otherwise the device will always be charged, not charged because I not always sitting on my pc and then I use the mda and when I come back I sync againg.That's happens a lot of time a day!
Do you know any registry key where I can turn off charging the device overt the pc?!

Topping Up is Better
There are a million threads about charging and this is sure to provoke flaming but here goes anyway.
You are better off topping up the battery frequently than running it low and recharging. The 'limited number of charging cycles' does not mean that you are better to run it low and recharge infrequently, but instead refers to the fact that with use the battery will degrade. Charging on your pc -- topping up -- reduces the impact of use slightly, but it is primarily battery use that matters.
There is some evidence that a monthly deep cycle will help, but for day to day use, topping up will *extend* the life of your battery. Note that there is no memory effect as exists with NiCd batteries, which were degraded by topping up.

My X1 don't seems to recharge battery when connected to PC

Hello everyone,
Though I didn't "checked" the box - "When device is turned on, do not charge the battery when connected to PC", my X1 still DOES NOT charge the battery!
So I am restricted to use only the power supply to charge my device.
Does anyone face the same problem ot is there any advice? Thanks.

Settings > Power
See if this option is checked
"When device is turned on, do not charge the battery when connected to PC"

bharat4ever said:
Settings > Power
See if this option is checked
"When device is turned on, do not charge the battery when connected to PC"
Click to expand...
Click to collapse
As I have mentioned, I DID NOT CHECK the box.
Anyone encountering the same problem or any advice. Thanks.

A search on these forums might help.

If the battery is low then a PC USB may not have enough grunt to kick the recharge into life. Use the wall charger instead.
The PC USB ought to be enough to trickle charge a mostly charge battery though.
I had a problem like this that only the wall charger could deal with, and I've read of several other similar incidents. You may be suffering the same thing.

try it on another computer or with ac powered usb hub, some usb ports don't have enough power to allow data transfer (activesync) and charge at the same time.

Battery drained out totally while connected to PC

This morning I almost got a shock because my X1 stayed black and seemed to be totally dead. Luckily I soon figured out that the Battery was empty, no currrent left on it to let the device even blink. But what happened? When I went to bed yesterday I connected it to the USB cable and left it charging! Everything seemed the same as all the times before. What may have caused this?
Only things that were diffrent from my usual charging procedure:
The Cable were connected to the PC USB Slot.
I shut the PC (laptop in this case) down but the USB Slots had still power. The charging lights of my X1 followed their normal pattern.
Normally I unplug the power cable from PC to prevent the USB Slots to have power. Because my USB harddisk keeps rotating while having power from the USB.
Normally I charge the X1 directly from the power outlet. X1 turned off.
So this time PC was off. X1 was off. USB Slots still got power. X1 connected with USB Slot. X1 seemed to charge normally.
Well, the result was that my X1's Battery was totally empty the next morning. Obviously instead of charging the USB slot drained of the whole battery power! But note that the charging lights were active as normal and the Battery was still warm in the morning.
Perhaps this helps others to prevent such issues.

you are crazy if you:
1. charges from laptop
2. from powered OFF device
you can repeat this case endless - xperia will be drained

Dadaism said:
This morning I almost got a shock because my X1 stayed black and seemed to be totally dead. Luckily I soon figured out that the Battery was empty, no currrent left on it to let the device even blink. But what happened? When I went to bed yesterday I connected it to the USB cable and left it charging! Everything seemed the same as all the times before. What may have caused this?
Only things that were diffrent from my usual charging procedure:
The Cable were connected to the PC USB Slot.
I shut the PC (laptop in this case) down but the USB Slots had still power. The charging lights of my X1 followed their normal pattern.
Normally I unplug the power cable from PC to prevent the USB Slots to have power. Because my USB harddisk keeps rotating while having power from the USB.
Normally I charge the X1 directly from the power outlet. X1 turned off.
So this time PC was off. X1 was off. USB Slots still got power. X1 connected with USB Slot. X1 seemed to charge normally.
Well, the result was that my X1's Battery was totally empty the next morning. Obviously instead of charging the USB slot drained of the whole battery power! But note that the charging lights were active as normal and the Battery was still warm in the morning.
Perhaps this helps others to prevent such issues.
Click to expand...
Click to collapse
Don't charge it in standby mode, how stupid is that?

What? I don't see any reason not to charge it from a laptop. Even if it's powered off, as long as the USB ports have power (mine has a BIOS setting for this) there is nothing wrong with that.
Also, what does it matter if you're charging the phone powered off or powered on?
On an interesting note, however, the same thing actually happened to me last night.
I plugged the phone into the wall socket to charge it (battery was at about 20%) and I actually saw the battery percentage rise as I was still using the phone. I turned it on in the morning (from standby, not powered off), and as soon as I pulled the power cable it went dead as the battery was completely empty.
I have no idea what might have caused this, and it hasn't happened to me before.

Next time dont power off ur X1,
if same happends then your battery is suffed.

Ethermind said:
1. charges from laptop
2. from powered OFF device
Click to expand...
Click to collapse
1) This was accidently
2) Why? I dont like it when mobile phones are on standby while I'm asleep. Charging the device when powerd off should make absolute no difference? Worked everytime but the one where it was connected to a powered of laptop.
Why will the Xperia been drained?
poetryrocksalot said:
Don't charge it in standby mode, how stupid is that?
Click to expand...
Click to collapse
Do you mean standby or powered off? Why should it make any difference? And why does the battery getting drained?
Jasand said:
Next time dont power off ur X1,
if same happends then your battery is suffed.
Click to expand...
Click to collapse
My Battery is quite healthy. *lucky*
jjm34 said:
What? I don't see any reason not to charge it from a laptop. Even if it's powered off, as long as the USB ports have power (mine has a BIOS setting for this) there is nothing wrong with that.
Also, what does it matter if you're charging the phone powered off or powered on?
On an interesting note, however, the same thing actually happened to me last night.
I plugged the phone into the wall socket to charge it (battery was at about 20%) and I actually saw the battery percentage rise as I was still using the phone. I turned it on in the morning (from standby, not powered off), and as soon as I pulled the power cable it went dead as the battery was completely empty.
I have no idea what might have caused this, and it hasn't happened to me before.
Click to expand...
Click to collapse
What does this BIOS setting say? I assume that my USB slots had too less power when laptop is off. But its very strange that your Device got drained while connected to the wall socket and in Standby mode. Maybe my USB slots were not the cause? Weird ...

Dadaism said:
What does this BIOS setting say? I assume that my USB slots had too less power when laptop is off. But its very strange that your Device got drained while connected to the wall socket and in Standby mode. Maybe my USB slots were not the cause? Weird ...
Click to expand...
Click to collapse
It is weird. Since your phone was off I don't think it would use any of its battery power.
I have a ThinkPad, and IIRC the BIOS setting is something like "Always On USB", in the USB settings. With this turned on the laptop will power its USB ports even when turned off, as long as the laptop itself has the power cable connected.

Dadaism said:
2) Why? I dont like it when mobile phones are on standby while I'm asleep. Charging the device when powerd off should make absolute no difference? Worked everytime but the one where it was connected to a powered of laptop.
Why will the Xperia been drained?
Click to expand...
Click to collapse
from powered off PC, when power on usb enough to wakeup PC or feed LEDs,
but not to charge another device. in that case power go into the weaker side, means from x1 -> pc

I had this problem too... seems after hard resetting my phone one time, one option was different to normal after I hard reset,
Click on the battery icon at the top of the screen
Theres a tick box, that says:
"When device is turned on, do not charge the battery when connected to the PC."
this was ticked for some reason. Unticked it, and all was fine.
Try it

I noticed this happened to me too for the first time, after i put in the wall charger and the the phone seemed to charge, i found it completely dead after 3 hours and the battery was warm, running a vanilla R1A

Battery
Also I think for the X1 to charge- it requires activesync. from my experience, when connected to the pc- without activesync, the X1 would indicate charging- but never actually gets charges. Hence when your notebook is off, activesync obviously wouldn't be running-> no charge either.

chinkyeyed09 said:
Also I think for the X1 to charge- it requires activesync. from my experience, when connected to the pc- without activesync, the X1 would indicate charging- but never actually gets charges. Hence when your notebook is off, activesync obviously wouldn't be running-> no charge either.
Click to expand...
Click to collapse
I assume a turned off PC would only power its USB port power pins and wouldn't respond to any transmissions on the data pins. So to the phone it should look just the same as if it were connected to the wall charger (just probably with a bit less power).
Also, when I have my phone connected to my laptop through USB Internet Sharing it does actually charge (it doesn't connect to ActiveSync when using Internet Sharing).
The device should charge in any USB mode as the USB port's power pins supply power regardless of the protocol used on the data interface.

Does the X1 have no safety feature that does prevent the battery from being drained?
In my case I assumed it happened because of the USB Port had too less power. But when you turn off your PC (+USB power) and let the X1 connected it would still mean a movement of current from the X1 Battery --> inside the PC as long as they are not on the same potential. If the PC is earthed somewhere (for example connected to the wall socket) the Battery would be drained out totally! They never get to the same potential as long the Battery has power.
As jjm34 mentioned, if the PC is on and USB slots powered normally the X1 should charge in any case.
Maybe this is not the real cause of the problem. People are reporting that the X1 got drained while connected to the wall charger! That's really weird. How can the battery being drained by this? Any suggestions @Ethermind ?
jjm34 said:
I plugged the phone into the wall socket to charge it (battery was at about 20%) and I actually saw the battery percentage rise as I was still using the phone. I turned it on in the morning (from standby, not powered off), and as soon as I pulled the power cable it went dead as the battery was completely empty
Click to expand...
Click to collapse
viperhead said:
I noticed this happened to me too for the first time, after i put in the wall charger and the the phone seemed to charge, i found it completely dead after 3 hours and the battery was warm, running a vanilla R1A
Click to expand...
Click to collapse

It could be:
It's drawing power FROM your x1 to provide power for laptop internal components.

Dadaism said:
...............
Maybe this is not the real cause of the problem. People are reporting that the X1 got drained while connected to the wall charger! That's really weird. How can the battery being drained by this? Any suggestions @Ethermind ?
Click to expand...
Click to collapse
Mine has. Put it on the wall charger and the charging symbol is there. It reaches 100%, the charging symbol disappears and it shows 100. Then in the morning it's at 90% even though it was still on the wall charger.
I've not left it plugged into a 'running' pc or laptop long enough to see if the phone runs off the battery after it's reached 100%, but it shows the same symptoms. Charging symbol until 100%, then it changes to 100%, no more charging symbol.
Even MSVC stops reporting '% & charging', just reports the % level once it's reached 100%.

I made 2 observations :
It seems the X1 need usb data pins active to charge the battery. The wall plug has something enabled to give power to the data pins (by the way, the wall plug can charge an iPod or an iPhone, it works perfectly). I tried using a cheap wall plug bought in china, no way to charge the X1 or my iPod as there was no power on the data pins. So when connected to an off PC, I'm not sure what's happening. If someone can give a try to analyze this with a multimeter, that would be nice.
It seems also the X1 stop charging after going to 100 %, and won't charge anymore unless you unplug - replug it.

Thanks for your contribution.
Maybe there exists a real hardware failure.
Normally the X1 should charge until the Battery reaches the 100% level. Then there has to be a switch that prevents the Battery from getting overloaded which is good. So charging stops.
The switch blocks charging until you unplug the device once it has reached the full battery level. Thats ok, too. You should not loose much Battery after a full charge and with a device on standby or powered off. And it prevents the Battery getting reloaded at high percentages. Otherwise it would start charging at 99% and stop again at 100 and so on, all the time.
But now assume the switch has sometimes, somehow a failure.
Instead of preventing current to get inside the battery it enables that current can flow into the wall charger.
I do not expect that the current flows into the power outlet. Maybe it gets "lost" in the current transformer that you've plugged into the power outlet (Thats the one you plugged the USB cable in.). Lost means it simply gets warm / hot.
Measuring the current with a Multimeter would be a nice proof. If someone has the technical knowledge and qualification to disassemble the current transformer and the USB cable, you have the go .

I haven't tested it, but I doubt the current flows back into the charger, or back into the USB port on a laptop / pc.

But how does the Battery discharge then? When there is no current flowing out it will stay loaded. (it goes like d(q)/dt+div(j)=0 )

Did you all charge your phone while it is on (standby)? I noticed the same problem when I charged my x1 while it is standby. When I pull the plug from my laptop (I used my laptop for charging, laptop powered on), I get 90% battery life. It seems like there is a switch to cut out the power input if the battery reaches 100% and power the phone from the battery.
Try to charge your phone while it is off. I did it yesterday, and it had stopped charging even before I unplug it from wall output, and I got 100% battery life.
Btw, this is not confirmed yet... it is just based on my experience...

Battery charging

I always suspected that when the Diamond2 is plugged into USB, that the phone continues to run off battery and is simply re-charged. This means that if you have programs running that are consuming the battery faster than it trickle charges, it was possible that it would never fully re-charge.
This situtation was made worse by ActiveSync which keeps the phone alive when in the cradle. If my phone was pretty discharged in the morning when I put it in the cradle, it often never re-charged. I had got into the habit of turning it off so that it re-charged.
WM6.5 has sort of confirmed this. Firstly, it now does re-charge when in the cradle when still on - I assume this is because power management is improved in 6.5 so that it doesn't consume as much power in idle.
But the original suspicion (i.e. doesn't run off USB power then in cradle but still uses battery) was confirmed today when a message popped up saying "Battery is discharging faster than it's charging, please close down some applications".
Nice
Cheers, Rob.

munrobasher said:
I always suspected that when the Diamond2 is plugged into USB, that the phone continues to run off battery and is simply re-charged. This means that if you have programs running that are consuming the battery faster than it trickle charges, it was possible that it would never fully re-charge.
This situtation was made worse by ActiveSync which keeps the phone alive when in the cradle. If my phone was pretty discharged in the morning when I put it in the cradle, it often never re-charged. I had got into the habit of turning it off so that it re-charged.
WM6.5 has sort of confirmed this. Firstly, it now does re-charge when in the cradle when still on - I assume this is because power management is improved in 6.5 so that it doesn't consume as much power in idle.
But the original suspicion (i.e. doesn't run off USB power then in cradle but still uses battery) was confirmed today when a message popped up saying "Battery is discharging faster than it's charging, please close down some applications".
Nice
Cheers, Rob.
Click to expand...
Click to collapse
USB2 spec is nominal 5V and 500Mah.
But if you use other USB slots then the available current will be reduced.
If the battery charge has been drained below a certain level then the charge circuit will struggle to recharge as well as power the phone.
Attempt to charge as often and for as long as possible, whenever you can preferably with a dedicated wall charger or in car while mobile.

I had a similar problem with one of my old phones. I had alot of devices plugged into the mainboard, so there simply wasn't enough power left to charge the phone battery.
I solved the problem by getting a USB hub with external power supply. Didn't charge quite as fast as with the wall charger, but still enough to keep the battery at full charge.
I'm not sure you got the same problem, but it could be worth a try. Perhaps you should unplug all other USB devices and see if it gets any better first.

>USB2 spec is nominal 5V and 500Mah.
This isn't USB charging - when in a cradle, it's like charging from the mains charger. The cradle has it's own power supply.
I haven't got a problem My post was just to confirm that a) the Diamond2 always runs off the battery even when plugged in to the mains and therefore if you are running programs that drain faster than it's charging, your battery will never fully recharge and b) WM6.5 now monitors this situation and warns you that it's happening so that you don't wonder why your battery isn't fully charging or takes ages to charge.
The reason it's an issue in the cradle is because ActiveSync prevents the screen for turning off and therefore one is at risk of the above, i.e. discharging almost as fast as it charges. Turn the device off in the cradle and it charges as fast as when using the mains charger. Best charge speed overall is with the device completely powered down.
But WM6.5 has also reduced the power drain when in the cradle, turned on and when ActiveSync is running. In WM6.1, it just about recharged when in the cradle for 8 hours. With WM6.5, it charges in a morning.
Cheers, Rob.

munrobasher said:
>USB2 spec is nominal 5V and 500Mah.
This isn't USB charging - when in a cradle, it's like charging from the mains charger. The cradle has it's own power supply.
I haven't got a problem My post was just to confirm that a) the Diamond2 always runs off the battery even when plugged in to the mains and therefore if you are running programs that drain faster than it's charging, your battery will never fully recharge and b) WM6.5 now monitors this situation and warns you that it's happening so that you don't wonder why your battery isn't fully charging or takes ages to charge.
The reason it's an issue in the cradle is because ActiveSync prevents the screen for turning off and therefore one is at risk of the above, i.e. discharging almost as fast as it charges. Turn the device off in the cradle and it charges as fast as when using the mains charger. Best charge speed overall is with the device completely powered down.
But WM6.5 has also reduced the power drain when in the cradle, turned on and when ActiveSync is running. In WM6.1, it just about recharged when in the cradle for 8 hours. With WM6.5, it charges in a morning.
Cheers, Rob.
Click to expand...
Click to collapse
You didn't say anything about a powered cradle!
That setup should have no trouble charging and powering the battery and phone. If it doesn't then suspect the power supply especialy if it's third party. There should be no need to charge when off.
My laptop will quite happily charge and power.

I have problem with charging with this Error:
the charging is not enough for device power consuption. Please shut down unused applications or switch to AC adapter
Click to expand...
Click to collapse
When synchronizing or only by conecting to PC or notebook

It's not an error as such - all it means is that your Diamond2 is discharging faster than it can charge. The reason it tends to occur more when connected via USB/Sync is that a) the charge power via USB from your laptop is lower than using a dedicated charger and b) ActiveSync keeps the screen on thus drawing more power.
So hence the suggestion you should close some applications to stop them running thus drawing more power. Of course, the biggest draw is probably ActiveSync and the only way to stop that running is to turn off the phone when in the cradle.
That said, I've found that WM6.5 is much better when it comes to power drain when in this mode and I've only had that message once.
Cheers, Rob.

and by navigation (IGO, Tomtom ) ?
At running IGO after 20 minutes by connected charging 5% battery is unloaded

Batter getting worse if connect to usb all the time?

Hi, I use MyPhoneExplorer to write sms from my laptop (tried EasySMS and RemoteSMS and didnt like them) while using the cable-mode. JuiceDefender somehow always turns off the WiFi eventough i add the MPE-Client to the allowed apps. However, since my Desire HD would be connect via USB to my laptop all the time, is it bad for the battery?
I know that on laptops you should remove the battery if its connected to the AC all the time.
Thanks

IMHO any kind of battery will degrade with time if constantly connected to a power source. So if you connect your phone via USB you better keep an eye on your battery..

No. Your battery will not get worse. It is true that a battery will lose its capacity faster if its always at 100%, but we are talking about a mobile phone. It will not be connected 24/7 for many weeks at the time so thats nothing to worry about.
Sent from my HTC Desire HD using XDA Premium App

zakazak said:
I know that on laptops you should remove the battery if its connected to the AC all the time.
Click to expand...
Click to collapse
This is a myth. Might have been true in 1995 maybe but not with today's Li-Ion or Li-Polymer batteries. Just don't worry about battery, there is nothing you can do to make it better or last longer. Charge whenever you want to and be happy using your device It is the same as with memory optimizers and task killers - people are used to them from other times and other platforms and think they do good. Just don't let it discharge too much too often, they say that the best for batteries is to charge them when they're not below 40% of capacity (but even so, I don't think it matters much).
regards,
D.

I agree with dalanik, Li-Ion battery perform better if you charge it often. Actually it is bad if you keep discharging them all they way to 0 and then recharge them all the way up to 100%. It might be good in the old days where there were NiCd.
Sometimes the battery stat could be the answer. The problem with Li-Ion battery is if you overcharge them then they can explode so there is like a stat that tells how much you can charge upto, so if your battery stat is screwed up then your phone thinks it is at 100% but it might not be. Try this and this might improve your battery by retuning the stats (from HTC themselves)
The following steps should significantly extend the battery life on your phone. Please connect the phone to the charger with the phone powered on, and allow the phone to charge until the notification LED is green, indicating the device is fully charged. Disconnect the phone from the charger, and power it off. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the notification LED is green. Disconnect the phone from the charger and power it on. Once the phone is powered completely on, power it off again and reconnect it to the charger until the notification LED is green. Disconnect the phone, power it on, and use it. You need to use this sequence only once. If the issue of battery life on our phone persists, I recommend you contact our HTC accessory department directly.
Click to expand...
Click to collapse