Database Develop

Charging from PC - worth while?

Is charging our Kaisers from the PC ok? How much power does the USB provide to the Kaiser? Same as the standard adapter? I am asking this because I found no answer on the forum and I would prefer to load it directly from the PC every time rather than keep using the standard charger and putting it in the power outlet.

my advice for you to stop this option
because normaly we keep the phone connected to the pc for a long time and it makes the phone in charging mode all the time and iam sure that will make the battery dies fast
stop this option by disabling it from the battery options you can see it by clicking on the battery icon on the start bar
greetings

My phone has been plugged in to the USB at work all day, 5 days a week, for 5 months now. I can still get about 2 days out of the battery when I need to - for instance, after unplugging it each Friday at 5 I usually won't have to charge it until the same time on Sunday, the only time it generally does get plugged into the wall charger. I'm pretty sure my battery performance is still on a par with most people's - ie, not amazing, but quite livable with. It's certainly not showing any signs of harm from overcharging.

Boinng said:
My phone has been plugged in to the USB at work all day, 5 days a week, for 5 months now. I can still get about 2 days out of the battery when I need to - for instance, after unplugging it each Friday at 5 I usually won't have to charge it until the same time on Sunday, the only time it generally does get plugged into the wall charger. I'm pretty sure my battery performance is still on a par with most people's - ie, not amazing, but quite livable with. It's certainly not showing any signs of harm from overcharging.
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Click to collapse
Same here.. no problems. I don't even know where my charger is.

I charge mine from the PC all day too, and it stops charging when its at 100%. The bottom line is this: a USB port delivers a minimum of 500ma at 5v, the wall charger is probably very close if not more than that. The charging circuit in the phone does all the work of converting the 5dc into a charging voltage/current required by the battery, usually ramping up and down. Theres no difference other than maximum current between a USB port and ANY 5vdc adapter.

Wall wart gives 5V/1A. USB at 5V/500mA will not harm your battery. If you're using the standard battery, USB charging is appropriate to keep it topped up.
RMD

Isn't the constant charging of the batter bad for it?
I mean you charge it use it for a while then hook it up again and so on, isnt it better for the battery if you wait until it says that you have to recharge it?

According to my BatteryStatus, my wall charger gives me around +500-600mA (depending on programs running) and USB 2.0 charging from the front port on my computer gives about +100-300mA (depending on what's plugged into the computer and program usage).

Insaneboy said:
Isn't the constant charging of the batter bad for it?
I mean you charge it use it for a while then hook it up again and so on, isnt it better for the battery if you wait until it says that you have to recharge it?
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Click to collapse
That was a nicad battery issue lithium batteries do not have that issue.
-McMex

i think the point here is not if you charge it by usb or charger
for many people as they said it goes as well ok but it's an old advice used to be known that it's not good for your battery health to be on the charger all the time
also the same fact that it's always better to let the battery goes empty before you recharge it again some people have the sickness of recharging batteries when it's just gets 5 percent less , then they immaditaly start to recharge it again and this is a big mistake because in the long period the first levels of the battery start to die because they have never been used

mcmexican said:
That was a nicad battery issue lithium batteries do not have that issue.
-McMex
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Click to collapse
Didn't know that.
Thanks.

haam1978 said:
the same fact that it's always better to let the battery goes empty before you recharge it again some people have the sickness of recharging batteries when it's just gets 5 percent less , then they immaditaly start to recharge it again and this is a big mistake because in the long period the first levels of the battery start to die because they have never been used
Click to expand...
Click to collapse
Actually, its quite the opposite of what you say. If you let Lithium batteries discharge all the way, they will loose their capacity faster.
The following link will back up my claim:
http://batteryuniversity.com/parttwo-34.htm
Relevant quote: "Avoid frequent full discharges because this puts additional strain on the battery. Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory. (In this respect, lithium-ion differs from nickel-based batteries.) Short battery life in a laptop is mainly cause by heat rather than charge / discharge patterns."

usb v wall charger
My kaiser
wall charger charges battery from flat (1%) in 1 hour
USB on PC takes 4 hours to go from 15 to 80%, only over night did it get to 100%.
I use wall charger everyday now.

axonn said:
Is charging our Kaisers from the PC ok? How much power does the USB provide to the Kaiser? Same as the standard adapter? I am asking this because I found no answer on the forum and I would prefer to load it directly from the PC every time rather than keep using the standard charger and putting it in the power outlet.
Click to expand...
Click to collapse
i use the pc option especially when i am traveling and only have my portable. When using my portable, i plug my phone in to get a charge... i like this option as it saves me from having to lug around another adaptor as well as being able to charge my phone just off the batteries of my portable at any time,,,, good option

posted twice --- as usual being a post hog

It's fine. It just takes longer to charge, especially if you're transferring a lot of data.

With the lithium ion chemistry, it is very detrimental to the battery if you let it run down to empty all the time. The batteries do not like this at all and will exhaust much quicker this way. If you were to store the batteries, you should store them at 40% in a cool place as that would only lose 2% of life per year I believe. At 100% storage, you can lost 20% a year of life. A little reading at that battery university website goes a long way

johnny13oi said:
With the lithium ion chemistry, it is very detrimental to the battery if you let it run down to empty all the time. The batteries do not like this at all and will exhaust much quicker this way. If you were to store the batteries, you should store them at 40% in a cool place as that would only lose 2% of life per year I believe. At 100% storage, you can lost 20% a year of life. A little reading at that battery university website goes a long way
Click to expand...
Click to collapse
So what happens when your battery that you leave stored at 100% loses 20% a year and a few years later it hits 40%?

Battery
haam1978: You are surely right for NiMh. But I don't know about Li-Ion. Time will tell. For now, I prefer to do it your way: discharge almost completely, BUT NOT TO 0%. Mostly to 5 - 10%. But the problem is that my stupid Windows doesn't report the life of the battery accurately ::- (. I got a Mugen 3000 Mah batt...
rotohammer & johnny13oi: Interesting website indeed. Unfortunately as I told haam, I can't get an accurate battery reading for this huge battery I got. Anyway, I'm still reviewing it ::- D.

rotohammer said:
Actually, its quite the opposite of what you say. If you let Lithium batteries discharge all the way, they will loose their capacity faster.
The following link will back up my claim:
http://batteryuniversity.com/parttwo-34.htm
Relevant quote: "Avoid frequent full discharges because this puts additional strain on the battery. Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory. (In this respect, lithium-ion differs from nickel-based batteries.) Short battery life in a laptop is mainly cause by heat rather than charge / discharge patterns."
Click to expand...
Click to collapse
100% correct.
On a side note, my kaiser will get fully charged way faster when connected to the wall as opposed to USB. (always connected to a desktop with a real big UPS).

Quick question about charging a mobile battery

Quick question. If you leave your phone plugged in and its fully charged and your using it, is the phone just leeching off the charger for power or is the charger pushing out small bursts of power to the battery. The context of my question is i'm starting to use webtop alot and I leave my phone on all day plugged in. Is continuing this behavior going to impact my battery or does the phone just leech directly off the charger without using the battery?

It's fine to leave it plugged in all the time. The phone has a "smart circuit" that use what is called trickle charge to just continually top off the battery as it drops below full charge. The phone is designed such that it doesn't receive power directly from the charger or USB cable, unless the +5v DC current is on pin 1 like a factory flash cable.
Bottom line is there is no damage or shortening of the life of the battery to leave it charging all the time while in the dock or any other means and Li Ion batteries no not have memory problems.

On a related note, is there any damage in using low-power chargers?
I have an external solar-powered battery charger that also supports USB-out, and I find that it doesn't put out enough power to really charge the battery, but it can keep the battery at its current charge level (whenever it is plugged in) for the equivalent of one charge (so the phone could theoretically last 2ish days).
I'm wondering whether this is constantly charging/discharging the battery (bad thing), or just providing enough power to run the phone (good thing).
I've also seen a similar behavior when charging over USB. If I'm using the phone a lot, sometimes a usb port doesn't supply enough juice to charge the phone.
I also saw this in some (rarer) cases with my OG Droid, but I didn't pay it much mind because I had 3 batteries for that thing and you could pick them up for a few dollars off of Amazon.com.

Thanks!
cellzealot said:
It's fine to leave it plugged in all the time. The phone has a "smart circuit" that use what is called trickle charge to just continually top off the battery as it drops below full charge. The phone is designed such that it doesn't receive power directly from the charger or USB cable, unless the +5v DC current is on pin 1 like a factory flash cable.
Bottom line is there is no damage or shortening of the life of the battery to leave it charging all the time while in the dock or any other means and Li Ion batteries no not have memory problems.
Click to expand...
Click to collapse
Thank you so much for your response. I had a feeling it was something like this. Good old "smart circuit".

podspi said:
On a related note, is there any damage in using low-power chargers?
I have an external solar-powered battery charger that also supports USB-out, and I find that it doesn't put out enough power to really charge the battery, but it can keep the battery at its current charge level (whenever it is plugged in) for the equivalent of one charge (so the phone could theoretically last 2ish days).
I'm wondering whether this is constantly charging/discharging the battery (bad thing), or just providing enough power to run the phone (good thing).
I've also seen a similar behavior when charging over USB. If I'm using the phone a lot, sometimes a usb port doesn't supply enough juice to charge the phone.
I also saw this in some (rarer) cases with my OG Droid, but I didn't pay it much mind because I had 3 batteries for that thing and you could pick them up for a few dollars off of Amazon.com.
Click to expand...
Click to collapse
To my knowledge, there is no reason a low power charger should present any problem, but charging from the USB on a PC is limited to 350mA and will definitely not push enough current to charge the phone while it is under heavy use like Mobile Hotspot tethering with LTE or even 3g.
The standard wall charger is 850mA and even that can sometimes only keep up or charge very slowly under heavy load.

USB spec is [email protected] not 350mA. But yes, a dedicated charger probably will charge faster. Some may go as high as 1A output...
Sent from my DROID4 using Tapatalk

[Q] Do I have a charging problem??

Since I got my HTC One Black, I have always thought it was fairly fast to discharge and really slow to re-charge.
In a normal day my phone will go from 100% to about 30% over 15 hours, with pretty minimal use, 1 or 2 quick calls, 4 or 5 texts and that is about it - does that sound right for discharge battery speed?
As for recharge, well this morning at 10am it was on 29% so i plugged in the charger, 3 hours later (1pm) without the phone being used at all it is on 64%. At that rate it would take from about 10am until about 5/6pm to charge from 29% to 100%, 6 hours for a 2/3rds battery recharge seems like along time to me.
Do your HTC Ones take this long or do i maybe have a phone problem?
Thanks
Update at 3pm it is now at 79%.

download gsam-battery-monitor, use your htc one for one day and post a screenshot.. also check your wakelocks with wakelock-detector..

Keep in mind the One is picky about its chargers. If you're not using the official HTC charger and cable that came with the phone, there's a decent chance it's reducing the milliamperage reaching the battery. Presumably HTC wants to protect the battery from overcharging or unstable voltage from 3rd party chargers, since the battery is not replaceable. When I first got the One, I noticed it was charging slow with my old Galaxy S3 charger and high capacity iPad charger. Battery Monitor Widget confirmed what I was experiencing; I was getting 300-400 mAh out of my 1000 mAh and 2100 mAh non-HTC chargers. Once I plugged in the stock HTC charger, the amperage reaching the battery drastically increased. There are some 3rd party USB cables that can cause slow charging also.

henrybravo said:
Keep in mind the One is picky about its chargers. If you're not using the official HTC charger and cable that came with the phone, there's a decent chance it's reducing the milliamperage reaching the battery. Presumably HTC wants to protect the battery from overcharging or unstable voltage from 3rd party chargers, since the battery is not replaceable. When I first got the One, I noticed it was charging slow with my old Galaxy S3 charger and high capacity iPad charger. Battery Monitor Widget confirmed what I was experiencing; I was getting 300-400 mAh out of my 1000 mAh and 2100 mAh non-HTC chargers. Once I plugged in the stock HTC charger, the amperage reaching the battery drastically increased. There are some 3rd party USB cables that can cause slow charging also.
Click to expand...
Click to collapse
It is the original charger.

are you on a stock rom or not?
some programs/apps/widgets you installed might do this
if nothing is working for you try factory re-setting your phone and use it without installing any new apps and monitor the battery consumption-charging behaviour

Dr.Jamil said:
are you on a stock rom or not?
some programs/apps/widgets you installed might do this
if nothing is working for you try factory re-setting your phone and use it without installing any new apps and monitor the battery consumption-charging behaviour
Click to expand...
Click to collapse
It is stock ROM 4.2.2 and there are very few extra apps etc.
I went through the apps list via settings and disabled loads of things, like facebook, twitter, playbooks, playmags etc. etc. I also have started using power saver with reduce screen brightness and save cpu power selected and the battery life now seems a lot better having only lost about 20% of power today rather than 70%.
Dont know if charging will be any faster though, will plug it in now and see how much charge it gets in 2 hours.

I've noticed the same issue with using other chargers. My question is, is there a car charger that would be able to properly charge it?

automaddux said:
I've noticed the same issue with using other chargers. My question is, is there a car charger that would be able to properly charge it?
Click to expand...
Click to collapse
Don't hijack my thread, post your own question and don't change the subject matter of someone else's thread!!!

[Q] Fun with fast charging in car

OK so I am running Trickdroid 9.1 with ElementalX kernel set to fast charging. I also have a specialist fast charging USB cable (no data). The car charger supposedly outputs 2.1 amps (at least one each port and I am only using one).
So basically before I found out about AC charge mode my battery was draining out when running NavFree app. Even when I changed to fast charge mode with an older (thin) USB data cable it was losing charge when running NavFree. Which is why I got the fast charge cable.
Now it seems to retain it's charge when running the app. At least it does not drain. However it never seems to charge either. It was on 78% charge and stayed like that throughout a 10 mile test journey. Using Battery Monitor Widget it shows that it never rose much over 600mA usage. But mostly used a lot less and sometimes dawdled around the trickle charge values.
Is there a reason why it won't charge up the battery whilst running an app like NavFree at the same time?

Start here:
http://forums.androidcentral.com/htc-one/312162-frustrated-charging-htc-one-car.html
I will offer that if you don't have power saver on that ROM you're probably SOL.
Sent from my HTC One using Tapatalk 4

bbinder said:
Start here:
http://forums.androidcentral.com/htc-one/312162-frustrated-charging-htc-one-car.html
I will offer that if you don't have power saver on that ROM you're probably SOL.
Sent from my HTC One using Tapatalk 4
Click to expand...
Click to collapse
Yes power saver mode is on. thanks for the link I am reading through it. So far it seems the HTC sucks on car chargers (but doesn't draw enough or if it does causes battery overheating issues if in a warm climate or have heating on).

The best results for me have been making sure you are using AC charging and have power save mode on. If I use that method my phone charges but it's a slow process.
Sent from my HTC One using Tapatalk 4

deadman3000 said:
Now it seems to retain it's charge when running the app. At least it does not drain. However it never seems to charge either. It was on 78% charge and stayed like that throughout a 10 mile test journey. Using Battery Monitor Widget it shows that it never rose much over 600mA usage. But mostly used a lot less and sometimes dawdled around the trickle charge values.
Click to expand...
Click to collapse
It will draw *up to* 1A, but only when mostly discharged. Try it with, say, 20% charge, you should get higher current.
Once the battery hits around 4.3V, charging changes from constant current to constant voltage; the current drops.

BenPope said:
It will draw *up to* 1A, but only when mostly discharged. Try it with, say, 20% charge, you should get higher current.
Once the battery hits around 4.3V, charging changes from constant current to constant voltage; the current drops.
Click to expand...
Click to collapse
Which is a terrible algorithm when you want your phone charged to max when driving using satnav apps. I want my phone to get a full charge on a journey. Not be down to 78% or lower at the end of it. I may need the phone for the next couple of days without being able to charge it.

Charging using the 25W adapter is slow.Please help.

Ive purchased a Galaxy S20FE (Exynos) version 4days ago. I also purchased a 25W Samsung fast charger. I am getting slow charging speeds. When mobile was on and idle it took 2hrs 10 min to fully charge. (My mobile data and GPS was off). When mobile was off it took 1hr10min to go from 20 percent to 100 percent. Can anyone tell what's the problem?
I am from Delhi. I use two sim cards. I have not rooted or installed any big games.

Ashutosh7x said:
Ive purchased a Galaxy S20FE (Exynos) version 4days ago. I also purchased a 25W Samsung fast charger. I am getting slow charging speeds. When mobile was on and idle it took 2hrs 10 min to fully charge. (My mobile data and GPS was off). When mobile was off it took 1hr10min to go from 20 percent to 100 percent. Can anyone tell what's the problem?
I am from Delhi. I use two sim cards. I have not rooted or installed any big games.
Click to expand...
Click to collapse
There is a fast charging option you need to enable in the settings.

Bala0009 said:
There is a fast charging option you need to enable in the settings.
Click to expand...
Click to collapse
Yes, it was enabled.

install Ampere and check your mA during charging. I get roughly 1700 to 1800mA on the standard charger with fast charging turn off.

Ashutosh7x said:
When mobile was off it took 1hr10min to go from 20 percent to 100 percent.
Click to expand...
Click to collapse
Just for comparison: When my S20 FE 5G is on it took 1h17m to charge from 20 to 100% using bundled 15W charger and cable.

3mel said:
install Ampere and check your mA during charging. I get roughly 1700 to 1800mA on the standard charger.
Click to expand...
Click to collapse
Thank you for advice. I checked mine and found that:
15W charger gives constant 1500-1600mA
25W charger gives max current of 3700mA for a few minutes and then drops down to 1800mA or even 1000mA.
Is it faulty?

Ashutosh7x said:
Thank you for advice. I checked mine and found that:
15W charger gives constant 1500-1600mA
25W charger gives max current of 3700mA for a few minutes and then drops down to 1800mA or even 1000mA.
Is it faulty?
Click to expand...
Click to collapse
It's dropping out of fast charging.
Excessive low or high battery temperature.
Between 40-65% it should charge at about 2% @minute if temp is above 60F and below 100F.
At about 80% it should drop out of fast charging to protect the battery.
You need an approved fast charger brick (minimum 25w) and cable. Make sure cable plug is fully inserted into the brick.
A failing battery will cause erratic fast charging; replace battery if any signs of case swelling are present! Check for this... been there, done that

What make and model of
Ashutosh7x said:
Ive purchased a Galaxy S20FE (Exynos) version 4days ago. I also purchased a 25W Samsung fast charger.
Click to expand...
Click to collapse
Is it defiantly a genuine Samsung changer..?

Ashutosh7x said:
Thank you for advice. I checked mine and found that:
15W charger gives constant 1500-1600mA
25W charger gives max current of 3700mA for a few minutes and then drops down to 1800mA or even 1000mA.
Is it faulty?
Click to expand...
Click to collapse
settings / battery and device care / battery / more battery settings / fast charge...
is it enabled there ?

3mel said:
settings / battery and device care / battery / more battery settings / fast charge...
is it enabled there ?
Click to expand...
Click to collapse
It wouldn't have fast charged at all if not enabled; 3500ma draw indicates it is enabled.
You can try toggling that toogle 3 times on/off while not charging. Sometimes this helps.
Try a known good (new) Samsung 25 w brick and cable.
Clear system cache.
Try a hard reboot (simulates pulling battery)
Make sure the C port contacts are clean.
A factory reset will most likely do nothing except waste your time.
If none of the above suggestions work it's a strong possibility you have a bad C port charging pcb or... a failing battery.
Any case swelling means replace the battery asap☠
A nominal fast charge profile; Note 10+ with a new battery on a Samsung 25 watt brick.
Starting battery temp was 70°F
Start 48% 4895 ma
65% 4100 ma
70% 3700 ma
The current draw can fluctuate as the charge increases depending on various parameters like temperature. Generally the draw is stronger at deeper discharge levels then tapers off as it approaches a 80% charge state. At 90% or so it will be around 800ma. At 100% the draw is 0ma.

I was thinking the phone and charger have to communicate for the charger to know the phones preference of current draw, the 3700mA dropping down could indicate that setting being received and adjusted to.

3mel said:
I was thinking the phone and charger have to communicate for the charger to know the phones preference of current draw, the 3700mA dropping down could indicate that setting being received and adjusted to.
Click to expand...
Click to collapse
With a 3700 ma draw fast charging is engaged.
Erratic fast charging is a strong indicator of a battery failure especially if it's capacity has noticeably decreased.
I watched this type of behavior for about 2 months. It started suddenly.
I was fortunate the swelling battery didn't damage my display or worse. It sits right against the display and it's thousands of mosfets and OLEDs. That matrix is delicate...

blackhawk said:
It wouldn't have fast charged at all if not enabled; 3500ma draw indicates it is enabled.
You can try toggling that toogle 3 times on/off while not charging. Sometimes this helps.
Try a known good (new) Samsung 25 w brick and cable.
Clear system cache.
Try a hard reboot (simulates pulling battery)
Make sure the C port contacts are clean.
A factory reset will most likely do nothing except waste your time.
If none of the above suggestions work it's a strong possibility you have a bad C port charging pcb or... a failing battery.
Any case swelling means replace the battery asap☠
A nominal fast charge profile; Note 10+ with a new battery on a Samsung 25 watt brick.
Starting battery temp was 70°F
Start 48% 4895 ma
65% 4100 ma
70% 3700 ma
The current draw can fluctuate as the charge increases depending on various parameters like temperature. Generally the draw is stronger at deeper discharge levels then tapers off as it approaches a 80% charge state. At 90% or so it will be around 800ma. At 100% the draw is 0ma.
Click to expand...
Click to collapse
Hey, thank you for telling all this. I am planning to go to service center.

blackhawk said:
With a 3700 ma draw fast charging is engaged.
Erratic fast charging is a strong indicator of a battery failure especially if it's capacity has noticeably decreased.
I watched this type of behavior for about 2 months. It started suddenly.
I was fortunate the swelling battery didn't damage my display or worse. It sits right against the display and it's thousands of mosfets and OLEDs. That matrix is delicate...
Click to expand...
Click to collapse
My device is 20 days old. It's battery capacity is 4370mAh (It should be 4500mAh). I am confused if battery is faulty or charger. Can you tell any app to check if battery is faulty?

your battery capacity is the exact same as mine.

Ashutosh7x said:
My device is 20 days old. It's battery capacity is 4370mAh (It should be 4500mAh). I am confused if battery is faulty or charger. Can you tell any app to check if battery is faulty?
Click to expand...
Click to collapse
If you're using the Samsung fast charging brick/cable return the phone now if you still can.
No reason to deal with a factory defect with a new phone. Better safe than pi$$ed
That reported battery capacity is within normal parameters for a new battery.
No app can tell if the battery is failing other than poor capacity. Any rear panel or display bulging is a dead giveaway sign of battery failure.
Note, what Android reports as battery capacity can't be trusted It's dumb as rain.

Ashutosh7x said:
My device is 20 days old. It's battery capacity is 4370mAh (It should be 4500mAh). I am confused if battery is faulty or charger. Can you tell any app to check if battery is faulty?
Click to expand...
Click to collapse
it could be either the phone or the charger that has a problem, it's possible that it is more the 25watt charger if the 15 watt charger works as intended. I'd get both looked at, you want to be sure after the money you've spent.

I have baught this 25W Charger for my s20 fe. But, whenever I try to charge with this after several minutes of charging charger gets disconnected and reconnects within seconds itself and it continues. There is no such issue with original 15W charger. My phone is rooted & custom recovery installed.
Is it software issue or hardware issue? Any idea?
Thanks in advance.

Riaz_Uddin said:
I have baught this 25W Charger for my s20 fe. But, whenever I try to charge with this after several minutes of charging charger gets disconnected and reconnects within seconds itself and it continues. There is no such issue with original 15W charger. My phone is rooted & custom recovery installed.
Is it software issue or hardware issue? Any idea?
Thanks in advance.
Click to expand...
Click to collapse
Not sure about that device but always start by using the OEM fast charger and cable.
Replace OEM charger/cable with same if not fast charging only -then- look for other causes.
A defective battery will also cause erratic fast charging. Any signs of case bulging indicates a battery failure and needs to be addressed asap.
A recently learned this lesson
Fortunately it didn't damage my display. The battery sits right on top of the AMOLED displays (with its thousands of mosfets and delicate matrixs) in most phones.