Hello!
Does the phone or battery itself has over charge protection?
Is it safe leave the phone connected to a computer/charger all the time?
I've been using HTC Hermes for 2 years and already replaced 3 batteries, not sure if it was due to phone was connected to a charger for at least 12 hours a day or something else..
Thank you.
technically it should'nt be an issue. the phone can detect when its battery is full and can set itself to trickle charge (atleast that's what i've been told). You do want to atleast have it drain itself full once a month or have it off the power line ever so often to keep the energy moving otherwise it goes stagnant. (not exactly stagnant, but you know what i mean.. right?)
Draining battery is not a problem, the phone does a good job doing just that
With all the technology one could assume that an advanced phone like this would have a overcharge protection. But wanted make sure that it does.
[email protected] said:
With all the technology one could assume that an advanced phone like this would have a overcharge protection. But wanted make sure that it does.
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No convinced it does myself. All the add-on chargers, cradles, etc. highlight having overcharge protection if they're any good. So perhaps it (overcharge protection) is a functionality of the charger and not the phone itself?
I know that when my phone is charging (battery not 100%) it's cool to touch, but when on charge (USB cable from PC, sync active) when the battery is full it's mildly warm to touch. Perhaps suggesting that incoming un-needed power is being converted into heat for dissipation?
To me, I think the phone probably has overcharge protection (whether it be the charging source, or teh phone itself by heat dissipation), but if your constantly leaving it on charge then perhaps the constant warmth is what's reducing your battery life?
Most charging control electronics is inside the phone, with some parts
inside the battery, like overheating protection and battery cell diagnostics.
Charging control checks the voltage rise during charging (actually difference
beetwen voltage before charging pulse and after that, so called delta voltage),
and when it reaches certain threshold, a charging unit switches to trickle
charging, which means "charging" with 1/10 or less of normal charging current,
amount which cannot cause perceivable warming. Most of warming happens
on final stage of normal charging, when battery is almost full, and its charge
accumulation efficiency drops, but is still being charged with the same current,
part of which, that cannot be accumulated, is dissipated as heat.
Heat dissipation
That heat dissipation is what has always concerned me. So I have bought extra batteries and external charges. I use the TP for business and some days out of the office a lot. Not unusual to go to two, occasionally three batteries in a day. That issue is my only "complaint" about this phone.
Related
Ok, so it is common knowledge that heat is your cell phone battery's worst enemy in terms of reducing its life. Heat causes lithium-ion battery packs to degrade much faster than they normally would. On top of that full recharge cycles accumulate much more heat than partial recharge cycles.
So keeping that in mind, I was wondering if cooling your phone to a degree while doing these full recharge cycles would make a noticeable difference in the lifespan of your phones battery.
This could be done via a custom phone cradle like the ones for charging your phone/spare batteries. Incorporate a small fan of some sorts or any other cooling method that would lower the overall temperature of our phones as they perform full recharge cycles. I know i do a full recharge almost on a daily basis with my G1's stock battery. And now that I have just installed an extended battery it will require a longer full recharge cycle, which I'm guessing will result in more heat. Not to mention I usually do this overnight so it remains connected long after it has fully charged.
Any ideas on all this? I'm half tempted to purchase a cradle and see what I can do as far as rigging one up, and using a good battery indicator app on my phone I can monitor temperatures throughout the whole charge.
I had the same worries on my eris. Whenever i am tethering my battery gets extremely hot and you cant charge it until the phone cools down. What i did is make a cradle of sorts with two computer fans.
went from 50C temps to around 35C.
All it is is a piece of plastic i cut out some circles to let air flow through it.
Lay phone on one side and superglue comp fans on the other.
Anyone having charging issue. I ran my shield battery down when I first got it. Then I plug it in to charger. Its been charging over 8 hours and still not at 100 percent. took it off charge at 80 percent. No way it should take this long. I read on reviews it took like 4 to 5 hours.
evobunny said:
Anyone having charging issue. I ran my shield battery down when I first got it. Then I plug it in to charger. Its been charging over 8 hours and still not at 100 percent. took it off charge at 80 percent. No way it should take this long. I read on reviews it took like 4 to 5 hours.
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You used the charger that it came with? And you're not playing games the entire time it's charging, right?
agrabren said:
You used the charger that it came with? And you're not playing games the entire time it's charging, right?
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yes I use charger that came with it. and it was charging over night when I was sleeping.
That sounds really odd. What does the battery usage say for the device? Was it awake the whole time? Does it think it was charging all night?
Sent from my HTC One using XDA Premium HD app
I feel like that has happened on my nexus 7 before. I bet it is an android thing. I would try again and see if it acts up a second time.
agrabren said:
That sounds really odd. What does the battery usage say for the device? Was it awake the whole time? Does it think it was charging all night?
Sent from my HTC One using XDA Premium HD app
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when I was charging, i close the screen. so it went to sleep. I dont know how you can tell if it think it was charging all night. I went to battery info and its said 13.6 hours on battery. and 48 percent of that was screen usage. rest was on game and apps.
evobunny said:
when I was charging, i close the screen. so it went to sleep. I dont know how you can tell if it think it was charging all night. I went to battery info and its said 13.6 hours on battery. and 48 percent of that was screen usage. rest was on game and apps.
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If you go into the "Battery Info" and touch on the graph area, it'll show you below some bars of time spent on different functions (like charging)
evobunny said:
when I was charging, i close the screen. so it went to sleep. I dont know how you can tell if it think it was charging all night. I went to battery info and its said 13.6 hours on battery. and 48 percent of that was screen usage. rest was on game and apps.
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1. Sometimes the battery indicator on Android can take a while to figure out your battery. It might drop 5 percent in ten minutes then take an hour to drop 5 more.
2. The vent area on my Shield seems warmer than the surrounding plastic even when in sleep for a while, so it may be drawing more power than is charging. Just try turning it off and charging it.
oushidian said:
1. Sometimes the battery indicator on Android can take a while to figure out your battery. It might drop 5 percent in ten minutes then take an hour to drop 5 more.
2. The vent area on my Shield seems warmer than the surrounding plastic even when in sleep for a while, so it may be drawing more power than is charging. Just try turning it off and charging it.
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Which vent area? Front or back? Because batteries do warm up when you charge them, and those are some big batteries (and a full 2 amp charge)
agrabren said:
Which vent area? Front or back?
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The smooth part on the bottom back with the model number, FCC, etc. And it's not when I'm charging but when the lid is closed. If I manually power it down then the warm goes away.
i never recommend running your device down when it comes straight out the box. usually i tell people to just fully charge the device first before running it dry therefore it can register the full battery, personally i would not leave a device connected over night just for the simple fact that it can be one in a million that the device might get screwed over a long period of time.
it be nice to know if the problem is fixed or not and what you did just in case others run into this same problem.
ive had no charging issues yet. batts do tend to get nice and warm tho.
but for what its worth i just noticed that im still getting notification sounds from my Shield even tho the lid is closed. so maybe its some kind of hybrid sleep and if you have some rogue app pulling a ton of CPU cycles & its not going into full sleep so its taking longer to charge?
just some food for thought on your issue
s0me guy said:
ive had no charging issues yet. batts do tend to get nice and warm tho.
but for what its worth i just noticed that im still getting notification sounds from my Shield even tho the lid is closed. so maybe its some kind of hybrid sleep and if you have some rogue app pulling a ton of CPU cycles & its not going into full sleep so its taking longer to charge?
just some food for thought on your issue
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Like most Android devices, the device goes to "sleep". Unless you power it off, it still handles notifications, and it still talks on WiFi. But it should consume very little power.
elitecmdr666 said:
i never recommend running your device down when it comes straight out the box. usually i tell people to just fully charge the device first before running it dry therefore it can register the full battery, personally i would not leave a device connected over night just for the simple fact that it can be one in a million that the device might get screwed over a long period of time.
it be nice to know if the problem is fixed or not and what you did just in case others run into this same problem.
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Modern devices use LiPi or Li-ion batteries, these explode when overcharged (seriously, youtube search overcharge lipo). As a result all devices sold with this kind of battery have charge monitoring tools and will disconnect the battery from the charging circuit when full, also they should then run purely from the mains power when the battery is full rather than running on the battery again (they don't like the repeat connect/disconnect effect that would lead to). End result, can't overcharge it.
The heat on mains power tends to be from the voltage regulator. These devices don't run on 5V power like comes from the charger. They tend to use a combo of switch mode and linear regulators to drop the 5V to 3.3V for the CPU and peripherals (3.3 is most common at any rate). Linear regulators in particular get quite warm. Switch mode regulators don't get so warm but don't give a clean output the CPU will run nicely on, they have the odd drop or spike which would either reset or fry the CPU, so generally what happens is the switch mode reg drops a large chunk of the voltage and then feeds it into a linear reg to drop the rest of the way (*the less voltage a linear reg has to drop the less heat it produces). From 5V to 3.3V it is most likely going to be purely a linear regulator, with the CPU and screen drawing at least 1A of current and a 1.7V drop that would equate to 1.7W of heat produced, not much, but enough that if you were to put your finger on the bare regulator chip it would come away red, hold it there long enough and it would be somewhat like those competitions kids have over who can keep their hand on the hot radiator longest That is the main reason they will get hot.
The batteries in these devices are usually 3.7V, that would need a separate regulator from above, and another regulator would still be needed to go from 3.7 > 3.3. 3.7>3.3 would not get so warm. 5>3.7 would still be warm as above.
Never fully drain a LiPo. Gets too low and you damage the cell ir-repairably. When the device claims it is at 0% charge and shuts off is usually closer to 10-20% charge. But that is still considered too low by some people. General advice if you want to prolong the lifetime of your battery is to turn the device off and charge it when it reports somewhere around 5-10% charge.
Batteries do get warm while charging. But my bet is that the voltage regulators would be far more significant heat producers.
agrabren said:
Like most Android devices, the device goes to "sleep". Unless you power it off, it still handles notifications, and it still talks on WiFi. But it should consume very little power.
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good to know. :good: i didnt think closing the lid was the same as pushing the power button on my phone to turn the screen off.
but the OP's problems still might be "sleep" related.
prime example my SGS3 batt life started to tank after the 1st VZW JB update. it took twice as long to charge & would never "sleep" (cuz of the OS not a app) but since the Tegra 4 is a much higher profile chip it could suck a bit more juice if its not being aloud to fully sleep, for whatever reason.
like you said tho, looking at the battery stats could easily tell us if this is the issue.
SixSixSevenSeven said:
Modern devices use LiPi or Li-ion batteries, these explode when overcharged (seriously, youtube search overcharge lipo). As a result all devices sold with this kind of battery have charge monitoring tools and will disconnect the battery from the charging circuit when full, also they should then run purely from the mains power when the battery is full rather than running on the battery again (they don't like the repeat connect/disconnect effect that would lead to). End result, can't overcharge it.
The heat on mains power tends to be from the voltage regulator. These devices don't run on 5V power like comes from the charger. They tend to use a combo of switch mode and linear regulators to drop the 5V to 3.3V for the CPU and peripherals (3.3 is most common at any rate). Linear regulators in particular get quite warm. Switch mode regulators don't get so warm but don't give a clean output the CPU will run nicely on, they have the odd drop or spike which would either reset or fry the CPU, so generally what happens is the switch mode reg drops a large chunk of the voltage and then feeds it into a linear reg to drop the rest of the way (*the less voltage a linear reg has to drop the less heat it produces). From 5V to 3.3V it is most likely going to be purely a linear regulator, with the CPU and screen drawing at least 1A of current and a 1.7V drop that would equate to 1.7W of heat produced, not much, but enough that if you were to put your finger on the bare regulator chip it would come away red, hold it there long enough and it would be somewhat like those competitions kids have over who can keep their hand on the hot radiator longest That is the main reason they will get hot.
The batteries in these devices are usually 3.7V, that would need a separate regulator from above, and another regulator would still be needed to go from 3.7 > 3.3. 3.7>3.3 would not get so warm. 5>3.7 would still be warm as above.
Never fully drain a LiPo. Gets too low and you damage the cell ir-repairably. When the device claims it is at 0% charge and shuts off is usually closer to 10-20% charge. But that is still considered too low by some people. General advice if you want to prolong the lifetime of your battery is to turn the device off and charge it when it reports somewhere around 5-10% charge.
Batteries do get warm while charging. But my bet is that the voltage regulators would be far more significant heat producers.
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yes while all this your saying is true i still wont risk it. i say this from experience had a note 10.1 and would leave it over night charging and sure enough it ended up screwing up. might of been there was something wrong with the device itself but still. good post on your behalf though :laugh:
but still im paranoid and prefer to just disconnect once its charge it wont hurt
elitecmdr666 said:
yes while all this your saying is true i still wont risk it. i say this from experience had a note 10.1 and would leave it over night charging and sure enough it ended up screwing up. might of been there was something wrong with the device itself but still. good post on your behalf though :laugh:
but still im paranoid and prefer to just disconnect once its charge it wont hurt
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I tend to go into way too much detail sometimes :/
Disconnecting can't harm it at least if that's what you prefer.
As for info source. Quite into electronics and robotics, intact the shield would make a good controller for robotics purposes
well i did my second charge last night. and this time much faster, about 5 hours to 100 percent. guess i dont have a problem after all. dont know what happen the first time.
SixSixSevenSeven said:
I tend to go into way too much detail sometimes :/
Disconnecting can't harm it at least if that's what you prefer.
As for info source. Quite into electronics and robotics, intact the shield would make a good controller for robotics purposes
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no worries lol i tend to get spaced out at times and go into details does not hurt to enlighten people :good:
So I picked up a Nexus 5, and I like it, but being that it has a sealed battery I'm a little OCD over prolonging the life of it. After doing some digging, I have come up with the following tips to follow (and some of these are common sense with regards to a lithium battery):
Don't let your battery dip below 20% often
NEVER let it die completely (unless you have to calibrate your phones battery readings)
Charging to 100% isn't the best for it, and especially don't let it sit at 100% due to heat issues
Don't charge it in subfreezing temperatures, or especially in 100+ degree weather
Generally speaking, small charges spaced out (adding 15-30% or so at a time) is better than ~75% at a time due to heat issues
Very, very small charges done in rapid succession (adding 5-10% - A.K.A. "bump charging"), is bad
Qi supposedly heats the battery too much
OK, so that's what I've established in doing some research... Anyone disagree with this?
So generally speaking, what I should do to maintain maximum battery health is use my phone from 90% back down to 20% (and back up to 90%) regularly, correct? Obviously this is in a perfect scenario, but it's good to know.
Well I had a few side questions of my own:
If you get a quality Qi charger that runs (acceptably) cool, will it still be too hot to use day in and day out for optimum battery health?
If you do shorter charges on Qi (say 15-30% as mentioned above), would that be OK at that point?
What if I want to go use my phone heavily (lets say play a game for an hour), is it less stress on the battery to use it while on the charger (and get hot), or just let the battery cycle on it's own and charge it multiple times in the process? Basically, does using the phone while plugged in (whether charging, or trickle-charging at 100%) cause more degradation than cycling the battery multiple times?
Is letting your phone off the charger at night (cycling the battery, even if just a little bit) really better than leaving your phone plugged in at 100%?
This is an interesting topic to debate, and I want to hear what you think!
rytymu said:
So I picked up a Nexus 5, and I like it, but being that it has a sealed battery I'm a little OCD over prolonging the life of it. After doing some digging, I have come up with the following tips to follow (and some of these are common sense with regards to a lithium battery):
Don't let your battery dip below 20% often
NEVER let it die completely (unless you have to calibrate your phones battery readings)
Charging to 100% isn't the best for it, and especially don't let it sit at 100% due to heat issues
Don't charge it in subfreezing temperatures, or especially in 100+ degree weather
Generally speaking, small charges spaced out (adding 15-30% or so at a time) is better than ~75% at a time due to heat issues
Very, very small charges done in rapid succession (adding 5-10% - A.K.A. "bump charging"), is bad
Qi supposedly heats the battery too much
OK, so that's what I've established in doing some research... Anyone disagree with this?
So generally speaking, what I should do to maintain maximum battery health is use my phone from 90% back down to 20% (and back up to 90%) regularly, correct? Obviously this is in a perfect scenario, but it's good to know.
Well I had a few side questions of my own:
If you get a quality Qi charger that runs (acceptably) cool, will it still be too hot to use day in and day out for optimum battery health?
If you do shorter charges on Qi (say 15-30% as mentioned above), would that be OK at that point?
What if I want to go use my phone heavily (lets say play a game for an hour), is it less stress on the battery to use it while on the charger (and get hot), or just let the battery cycle on it's own and charge it multiple times in the process? Basically, does using the phone while plugged in (whether charging, or trickle-charging at 100%) cause more degradation than cycling the battery multiple times?
Is letting your phone off the charger at night (cycling the battery, even if just a little bit) really better than leaving your phone plugged in at 100%?
This is an interesting topic to debate, and I want to hear what you think!
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Click to collapse
First off, BUMP!
Second, here are some results I've had. While idling, the battery life is RIDICULOUSLY good, however, whenever the screen is on the battery is terrible... It's like a Toyota Prius with a V10 hybrid-drive; around town it is very efficient, but get on the highway and VROOOOOOOOM!
The phone was at 42% charge after two days. Granted, there was only 37 minutes of screen usage, but I did quite a bit of Bluetooth / Spotify streaming. Wifi was on and connected almost the entire time. I do notice that my idle drain goes from .2% to .6% lost per hour on wifi, to 1.5% to 3% lost per hour while on HSPA+ / LTE.
rytymu said:
So I picked up a Nexus 5, and I like it, but being that it has a sealed battery I'm a little OCD over prolonging the life of it. After doing some digging, I have come up with the following tips to follow (and some of these are common sense with regards to a lithium battery):
Don't let your battery dip below 20% often
NEVER let it die completely (unless you have to calibrate your phones battery readings)
Charging to 100% isn't the best for it, and especially don't let it sit at 100% due to heat issues
Don't charge it in subfreezing temperatures, or especially in 100+ degree weather
Generally speaking, small charges spaced out (adding 15-30% or so at a time) is better than ~75% at a time due to heat issues
Very, very small charges done in rapid succession (adding 5-10% - A.K.A. "bump charging"), is bad
Qi supposedly heats the battery too much
OK, so that's what I've established in doing some research... Anyone disagree with this?
Click to expand...
Click to collapse
Most of those aren't really wrong, they're just massively over-exaggerated.
A. Heat only matters if you're getting the battery up to like, 50C often. Note that the phone will actually stop charging if it hits these temperatures.
B. Small charges don't really help or hurt.
C. Qi doesn't heat the battery itself that much.
Overall, you're overthinking it way too much. Just don't leave your phone on the car dash in the middle of the summer sun, don't leave it on the charger for an entire week without unplugging it, and try not to drain it completely to 0%.
Li-Polymer batteries are far more resilient than people give them credit for. Even if you used your phone absolutely perfectly, over the course of a couple years you'd be lucky to get an extra 5% of life out of it. It's not worth your time and stress at all.
Hi there, I own a Nexus 5 recently. The phone arrives soon and by everyone is know that battery comes with some charge. Should I leave discharge the battery complete and then charge back or how is this procedure in order to not kill the battery and gain a good calibration?
I have an extra question, is there any problem for battery if I leave the USB cable connected all the time even if battery is full?
Sent from my Galaxy Nexus using Tapatalk
Just charge it, don't fully discharge it and use it normally. You don't need to worry about calibrating
jd1639 said:
Just charge it, don't fully discharge it and use it normally. You don't need to worry about calibrating
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You can use as normal..I normally drain it.
And in general, when dealing with lithium ion batteries, leaving them plugged in excessively when fully charged kills the battery in the long run
teh roxxorz said:
You can use as normal..I normally drain it.
And in general, when dealing with lithium ion batteries, leaving them plugged in excessively when fully charged kills the battery in the long run
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Bad form on both counts. Li-ON batteries shouldn't be deep discharged. They have built in circuitry to prevent ACTUAL 0% (they shut down before getting to real 0%) but still not good to run it down to 5% all the time.
Unless you have some crappy charger & phone, the IC in the phone will instruct the charger to kill power when it's full so leaving it plugged in all the time wont make a difference - this is for a phone.
This is not the same and not for the same reasons in laptops. Reason it's not so good is if your laptop has crappy cooling system or like some people need it on "Performance" all the time because they don't want their CPUs "slowing them down". As a result of the heat from the system now going into idle state, the battery lifespan degrades. This is where your "plugged in all the time" stance comes from but it's not valid with all applications.
shotta35 said:
Bad form on both counts. Li-ON batteries shouldn't be deep discharged. They have built in circuitry to prevent ACTUAL 0% (they shut down before getting to real 0%) but still not good to run it down to 5% all the time.
Unless you have some crappy charger & phone, the IC in the phone will instruct the charger to kill power when it's full so leaving it plugged in all the time wont make a difference - this is for a phone.
This is not the same and not for the same reasons in laptops. Reason it's not so good is if your laptop has crappy cooling system or like some people need it on "Performance" all the time because they don't want their CPUs "slowing them down". As a result of the heat from the system now going into idle state, the battery lifespan degrades. This is where your "plugged in all the time" stance comes from but it's not valid with all applications.
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Well very true, and I have an electronics background, so I know what works and what's alright. Discharging it is fine.
Thanks to all of yours I'll learn something new and now I know how to handle battery lifetime for best
Sent from my Galaxy Nexus using Tapatalk
Actually Shotta35 is 100% correct with regards to deep discharges and li-ion batteries. There is a write up I did in 2012 about battery care from a hardware prospective in my sig, and it has nothing to do with battery memory. teh roxxorz is also right about leaving batteries plugged in for extended periods of time. More energy = more heat = shorter lifesan.
Nothing on this came up for the note 10.1 specifically. I use an 8013 with Gnabo v8 KitKat installed.
When my N8013 reaches full charge, I get a message telling me to unplug it. Why ? (Is this just a stupid message or is there really a reason?)
If I am not going to be using the tablet, are there any differences (in battery life, recharge numbers, etc)
caused by keeping the charger on or not?
I have seen many opinions on L-I batteries in general, but nothing specific to the SAMSUNG charger and note 10.1 (2012).
I am looking for something beyond "I do this" or "I believe."
Anybody out there have some tech knowledge on this ??
Many thanks.
I know on my 8013 with the old bootloader and Kit Kat it will not charge powered off and often acts funny while charging anyway. I personally cycle my batteries on all devices from full to empty and have not had any battery replacement problems..
the last time I attempted to leave one plugged in all the time was a cheaper phone a couple of years ago and the battery swelled up and almost exploded. Besides the normal dangers of just having a plug in hanging out of your device all the time could wear out your socket. I like my device too much to leave it plugged in all the time and take a risk. & I do believe it would be a risk IMO.
now I use a kernel and it allows modification of charging amperage and that may help to lower that for constant plugin and I would feel safe when I have my tablet in my vehicle and plugged in to a low or trickle charger on a mount and leaving it constant. But personally under normal use and not dash mounted I would never consider leaving it plugged in constant. You should try it and report back any hardware damages jk. I have not read of any..
and you're just asking besides like the common sense things ?like saving energy ?, or reduceing heat passing through your charger and device, because of constant electricity flow, remember the more heat you are causing in piece of equipment the more damage and wear and less overall time you get out of that device whether it be a charger, battery, circuit board etc.
jimyv said:
I know on my 8013 with the old bootloader and Kit Kat it will not charge powered off (mine charges) and often acts funny while charging anyway. I personally cycle my batteries on all devices from full to empty and have not had any battery replacement problems..
the last time I attempted to leave one plugged in all the time was a cheaper phone a couple of years ago and the battery swelled up and almost exploded. Besides the normal dangers of just having a plug in hanging out of your device all the time could wear out your socket. I like my device too much to leave it plugged in all the time and take a risk. & I do believe it would be a risk IMO. (Does the oem charger have overcharge protection? Will the 8013 stop charging when 100% - these are the big questions.)
now I use a kernel and it allows modification of charging amperage and that may help to lower that for constant plugin and I would feel safe when I have my tablet in my vehicle and plugged in to a low or trickle charger on a mount and leaving it constant. But personally under normal use and not dash mounted I would never consider leaving it plugged in constant. You should try it and report back any hardware damages jk. I have not read of any..
and you're just asking besides like the common sense things ?like saving energy ? (If it stops charging on full charge - there is no energy waste), or reduceing heat passing through your charger and device, because of constant electricity flow, remember the more heat you are causing in piece of equipment the more damage and wear and less overall time you get out of that device whether it be a charger, battery, circuit board etc.
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Thanks for opinion.
mangurian said:
Thanks for opinion.
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well of course they are designed to stop charging when they are 100%. the real question is how far down will it allows to discharge before it starts charging again? My experience is almost none ...you'll never see it leave a hundred percent. so basically you're charging all the time and cycling the charger unit . you have also modified your device and even unmodified ones there are no guarantees such as life. And anything plugged into a plugin is using some amount of current. And I have burned up several chargers through many devices by leaving them plugged in to the devices for extended periods of time while in use.I can say for certain leaving them plugged in constantly you are going to be buying chargers at the very minimum.
for me if Samsung is asking me to do this it is because they have it designed into their product for longevity reasons. They have millions upon millions of hours invested into wear dating these products used in a specific manner Who am I to try to reengineer the wheel. to me it's not even an arguable discussion do what's your opinion wishes you to do. Again I'm sure they know more than you..about what's best for their devices. For if longevity only.
I'm sure if you needed a detailed analysis of what's going on with your hardware when you're plugged in maybe Samsung technical hotline could be assistance to you. Seems to be more of a hardware engineer question to me..imo
of course with root privileges you can pretty much set up any charge schedule you would like to do as far as when to begin charging when to shut off charging screen off screen on etc and how much amperage you wished to consistently charge..
so basically if you are going to use the device against the design. (portable) then you should probably set up your own charging parameters and behaviors. To extend your device life. For example when I have mine in dock position in my vehicle .it is set to only charge 1 amp from charger key on power only and screen on while charging . And this allows my device to cycle on the battery when vehicle is not running. Reduces heat in my unit. and does not burn up my chargers