Why does my tablet turn on when I plugin the charger? Why can't I charge it with the power off and not driaining the battery? The answer is simple. Just about all of todays tablet use "Smart Charging" in order to charge the battery faster. But to do that, there is an app in the firmware to read the temp and voltage level of the battery to regulate the charge rate. But to run that app, the device MUST BE ON!!!
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Hi all,
I've noticed that when I plug my HD to a PC but with "Don't charge battery while connected" option enabled (I keep my phone connected to a cradle while at work, and I don't want to keep it charging for so long) the battery drains very quickly. It can take about 3 or 4 hours to waste a full charge.
Anyone has experienced the same?
BTW, ActiveSync is on.
Thx.
twocandles said:
Hi all,
I've noticed that when I plug my HD to a PC but with "Don't charge battery while connected" option enabled (I keep my phone connected to a cradle while at work, and I don't want to keep it charging for so long) the battery drains very quickly. It can take about 3 or 4 hours to waste a full charge.
Anyone has experienced the same?
BTW, ActiveSync is on.
Thx.
Click to expand...
Click to collapse
Enable the option to charge while connected, it will not damage your LI-ION battery. LI ION batteries are damaged on repeated full discharges, however this is limited by the in built circuitry to protect the battery. Also, charging through USB will be slower than using your charger as the current supplied is a lot less.
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
Is the Galaxy S(or android in general) capable of turning off charging? I would like to charge my phone from some unconventional sources(ie a solar panel or a bike dynamo), but that means the charging current can dip below useful rate. When that happens, the phone starts draining battery.
A more specific example: I bought a 5V solar panel with 700mA output. I hooked it up to a usb cable, shorted the data lines and the phone charges great. Except when the solar panel goes in the shadow, then the rate drops to 0, and when it comes out of the shadow it takes a long time to get the current back up if it's plugged into the phone. During that time the current slowly ramps up from 100mAh to 200mah to 300mah, until eventually it gets back up above 400mA and can actually charge the phone(instead of having the charging circuitry drain it).
What I would like to do is have the phone detect when the current dips below 400mA, then stop charging for 60seconds...try again..and stop if current still below a useful level.
I know I can get the current from /sys/devices/platform/jupiter-battery/power_supply/battery/batt_chg_current, can I use some proc file to also turn charging on/off? Is there an existing app that works for this?
I have one i9506 , where is all time on charger and this is problem, unfortunately, the batteries are often inflated in this mode.
Is there any possibility of i9506 controlling the charging?
No. There is circuitry in the battery and the charger which communicates to the device the correct battery level. That circuitry cannot be bypassed or tricked. While I've never tried it with a smartphone, your best bet would be to remove the battery and simply power the device with the charger.
Is there a magisk module that does this:
https://forum.xda-developers.com/apps/magisk/module-magic-charging-switch-cs-v2017-9-t3668427/amp/