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.
Related
For some reason, every couple of days when I plug my phone in to charge the battery overnight I end up getting an alert (about 4 in the morning!) to change the battery because mine is dead, along with the back up battery, and then the phone shuts off within about a minute. Luckily I have another battery, which I then put in, and then put the dead battery in the "back up battery" slot in the cradle to charge, which it does. I don't know why this happens but it is very frustrating. I am afraid of this happening on a trip out of town where I won't have the ability to use my cradle, unless I bring it which is a big hassle. I don't know what to do.
This IS vexing. By the fact that it charges the extra battery - we know that the power transformer is connected. Since the device does not seem to be charging (possibly even discharging?) - it seems that either the connector on the charging base or the connector on the device itself are bad.
Have you used the power dongle connected to the power transformer to attempt to charge the device? This would tell you if it's the charging base or the device. If it charges outside of the base, it's the base - if not, it's the device.
Best of luck!
How are you charging the battery - from mains power or through the USB?
I had a situation where I was only using USB power to the cradle and although this worked most of the time, I noticed that if the battery was already low (<50%) then the battery seemed to discharge rather than charge.
So the trigger in your case may be the amount of charge left in the battery before you start re-charging it.
I think other people have reported similar discharging situations, so some other ideas might emerge from a search of other threads.
Hi everybody.
To get the most out of my battery I always wait until my device shuts down due to lacking battery. The I chargt it until it the end and the battery displays 6+ houres.
When I recharge the battery before its empty I only get 4+ houres when its full.
I also read that the battery's lifetime is increased by only charging it that way.
My problem is the cradle that charges it everytime I sync.
Is there a way or tool to switch charging on/off for the cradel?
Thanks alot
Alex
The way I understand it, modern batteries do better when charged regularly in small increments. They do very badly with multiple deep discharges, which can actually damage them.
So I would actually disagree with you that what you are doing is a good idea.
If you still decide to do this, the simplest way is probably a manual activesync via bluetooth, using a dongle, as it actually charges via USB too.
Surur
Right the bluetooth thing would be a good idea.
And you might also be right that you should not charge it in such an extreme way...
I read this an a PC Magazin.
I don't know if its wrong or right. the only thing I know is that the battery lasts longer when I charge it thta way.
Thanks
Alex
The battery in the xda2 is designed for constant charging, I dont see how you would get more battery life because if you acheive your desired aim the xda2 will be discharging during sync and will give less battery time than if you let it top up the charge.
I read that Ion battaries have only a limited number of complete chargings bevor the are broken...
alex
I have noticed that when TD2 is on external power (USB cable computer connected) the battery continues to drain.
I have activated the option "When device is turned on, do not charge the battery when connected to the PC".
I have done this in order to avoid partial charging. My phone is new and the manual says: "Some batteries perform best after several full charge/discharge cycles."
So, when connected to PC, the battery does not charge, but wasn't supposed that the phone rely on external power? The battery keeps draining.
Is this normal?
Shouldn't it be like on laptops? When connected to an outlet the device relies on external power, and when plugged off, the battery takes over.
disable
I have activated the option "When device is turned on, do not charge the battery when connected to the PC".
this is not only for your computer but also for any external power sourches
So, when connected to PC, the battery does not charge, but wasn't supposed that the phone rely on external power? The battery keeps draining.
Click to expand...
Click to collapse
You can't rely on a computer USB to give enough power for operation of the phone under all conditions, so it has to use its battery. Some USBs on laptops and "netbooks" only give 500mA max. If the phone were to even briefly try and draw more than this, the USB would cut the power off.
A USB mains adapter is different, as it's usually capable of 1000mA or more. I believe HTC phones "test" the supply and adapt their charging strategy accordingly.
Sorry - double posted
The draining happened without operating the phone.
No background processes.
It just reduced the backlight, and the baterry was losing charge as time went by.
Your best bet then is to deactivate ""When device is turned on, do not charge the battery when connected to the PC" again.
I think HTC gives this option for the reason I outlined above (to enable you to connect it to netbooks etc without the USB switching off, like it does with some external hard drives which take too much power).
I wouldn't worry too much about "partial charging" because it shouldn't damage or reduce the life of a lithium ion battery. Just do a full discharge/ charge cycle perhaps every month, to recalibrate the battery metering.
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
For example if i leave all night charging, does it damage the battery? Some batteries after fullycharged, they wont charge anymore. What about u8800?
And what happens if i charge while phone is open and not fully empty? Does it damage?
My charge lasts 16 hours, why is it? I dont use wifi, games, etc. Please help
All ROMs should stop the charging process when reached 100% (the icon changes, on the stock ROM the flash disappears of the icon), therefore I believe that the battery cannot be damaged by leaving the phone plugged in the whole night.
I'm sure that it doesn't matter when you recharge the phone, if it's 10% or 50% it makes no difference to the charging process or the battery. It use to matter on the Li-Nch batteries, but those are long gone...
The fact that the battery only lasts 16 hours, it's an unrelated problem, that I've been struggling with for months now...It's one of the system/hardware components that hangs and doesn't allow the phone to go to sleep...therefore, the battery lasts up to 24h.
Look at this thread, so many users are affected by this...probably most of them and only the recent kernels (.void/Miui) have measures against this problem.http://forum.xda-developers.com/showthread.php?t=1043760
I did not make any rom differences or overclock. Still stops the charging?
Sometimes i charge from pc via usb, can it damage?
It goes 16 hours without wifi or blueetooth or 3g. I dont use too much but goes for 16 hours.
http://forum.xda-developers.com/showthread.php?t=1043760
Here, it is about sleeping mode. My phone goes black screen after 15 seconds idle. What is sleeping mode?
Cursed Chico said:
I did not make any rom differences or overclock. Still stops the charging?
Sometimes i charge from pc via usb, can it damage?
It goes 16 hours without wifi or blueetooth or 3g. I dont use too much but goes for 16 hours.
http://forum.xda-developers.com/showthread.php?t=1043760
Here, it is about sleeping mode. My phone goes black screen after 15 seconds idle. What is sleeping mode?
Click to expand...
Click to collapse
Charging from USB is somewhat preferable to wall charger, due to it charging slower, therefore generating less heat. Although, a wall charger won't do any harm. When the screen is off and the phone is not doing anything, the CPU is suppose to go into a deep sleep state, yet with this phone it does not.
wall charging should be preferable in my experience
Ok, let me clarify a few things here.
The battery recharging process is simple, when the battery reaches 2.2V, then the current inside is not enough to sustain the hardware and it's considered empty. Any standard phone charger, will pump current until the voltage is 4.3 and then the so called "negative delta v" signal is being sent and the charger stops pumping.
USB is a BUS designed to carry data, but to be able to carry data it needs to provide a power supply to the connected device. Therefore, any USB should be able to deliver 5V and 500mA to any device connected.
As this phone's battery, according to the wall charger specification, takes up to 1Amp, the simple math tells us that the wall charger will charge the battery twice as fast. Since I've been dealing with batteries, I can tell you that in this case USB charger is a much better choice to recharge this battery, as it delivers only 500mA. The less current going through the electrodes, the lower the chance of damaging the battery due to high temperature.
For more info:
http://www.mpoweruk.com/chargers.htm
http://en.wikipedia.org/wiki/Battery_charger
http://en.wikipedia.org/wiki/Lithium-ion_battery
According to Wikipedia:
"Most modern cell phones, laptops, and most electric vehicles use Lithium-ion batteries. These batteries last longest if the battery is frequently charged; fully discharging them will degrade their capacity relatively quickly.[23] When storing however, lithium batteries degrade more while fully charged than if they are only 40% charged. Degradation also occurs faster at higher temperatures. Degradation in lithium-ion batteries is caused by an increased internal battery resistance due to cell oxidation. This decreases the efficiency of the battery, resulting in less net current available to be drawn from the battery."
These batteries last longest if the battery is frequently charged; fully discharging them will degrade their capacity relatively quickly.
So we must usually charge from usb and must stop before reaching %100 charge, maybe %98?
But when connect to pc, there is an icon shown, before disconnecting we need to click "disconnect secure" icon on system tray, if i dont do, it damages the system of phone?
Cursed Chico said:
But when connect to pc, there is an icon shown, before disconnecting we need to click "disconnect secure" icon on system tray, if i dont do, it damages the system of phone?
Click to expand...
Click to collapse
There is a very small chance on XP, dunno about vista, no harm on win7.
So we should usually charge from usb and must stop before reaching %100 charge, maybe %98?
It is more safe since there is half of the current that passes compered to Charging with the AC adapter. But it theoretically takes almost double time.
Cursed Chico said:
So we should usually charge from usb and must stop before reaching %100 charge, maybe %98?
Click to expand...
Click to collapse
Yes, that's correct. But, I wouldn't worry about stopping before 100%. I know for sure that the stock ROMs are stopping the charging process when reached 100%.
Cursed Chico said:
But when connect to pc, there is an icon shown, before disconnecting we need to click "disconnect secure" icon on system tray, if i dont do, it damages the system of phone?
Click to expand...
Click to collapse
No.You're not going to damage anything by disconnecting the cable directly. That "safe disconnect" is only for data transfer, nothing to do with charging.
Because of the exploding nature of li-ion cells when misused, the battery itself has a protection circuit to prevent overcharge and discharge. So whatever how much the rom wants to charge, the battery will protect itself...
Exactly; the ROM does not have any influence on the charging process - that is why your phone can charge the battery even though it is turned off. The whole process is completely independent from the software your phone is running.
In 2011 it is very hard to damage a battery, it will most likely die from old age. There is just one thing that is not the best thing to do: Trying to switch on the phone when the battery is empty already. If the voltage of the battery drops below a certain point, the battery might be damaged and thus have less capacity afterwards.
To be on the safe side I always turn off the phone a few minutes before the battery is completely empty.
I agree that there is a separate circuit that does the charging, so no matter if the phone is on or off, battery would still charge. But, I believe that the Rom can interfere with the charging process, that's why on some Roms you get the flashing buttons when phone is fully charged or sometimes you can't unlock the phone from the first attempt, when battery is full.
In reality, i believe that charging process has 2 control points, the default (when phone is switched on) and the "failsafe" one that charges the phone when voltage has dropped below a certain value (which has to be is different in terms of current values, as there is no power consumption).