Hey guys, I am so insecure about the battery charging tips for the OnePlus 6. I've seen a lot of posts, some say it does no harm charging to 100% and vice versa. Could anyone please enlighten me? I always charge my phone until 80% and then disconnect the power source.
Thank You
Whatever makes you feel comfortable.
I always charge to 100% but try to avoid the constant use of dash charging. I find that regular fast charging slightly reduces the battery life. Not charging to 100% also reduces the battery life (as the phone will think after a while that 80% is the max it can reach). I want to keep this phone for a long time (got the 8/256 version) and my experience with years of computerized Lithium chargers (for RC stuff) suggests that a. always charge to 100% and b. avoid frequent fast charging, slow(er) charging is better. That lead for me to the max battery life (both capacity and overall life expectancy)
Gadgetguy2005 said:
I always charge to 100% but try to avoid the constant use of dash charging. I find that regular fast charging slightly reduces the battery life. Not charging to 100% also reduces the battery life (as the phone will think after a while that 80% is the max it can reach). I want to keep this phone for a long time (got the 8/256 version) and my experience with years of computerized Lithium chargers (for RC stuff) suggests that a. always charge to 100% and b. avoid frequent fast charging, slow(er) charging is better. That lead for me to the max battery life (both capacity and overall life expectancy)
Click to expand...
Click to collapse
Not charging to 100% will NOT reduce battery life as much as charging to 100%. You're probably thinking of Lithium-Polymer batteries and not Lithium-Ion batteries which this phone uses.
isaacchook said:
Hey guys, I am so insecure about the battery charging tips for the OnePlus 6. I've seen a lot of posts, some say it does no harm charging to 100% and vice versa. Could anyone please enlighten me? I always charge my phone until 80% and then disconnect the power source.
Thank You
Click to expand...
Click to collapse
Ignore all the crap. Just use your phone comfortably as that's how the experience should be. By the time your battery degrades, you'll probably be looking to replace it anyway.
j0nas_ said:
Not charging to 100% will NOT reduce battery life as much as charging to 100%. You're probably thinking of Lithium-Polymer batteries and not Lithium-Ion batteries which this phone uses.
Click to expand...
Click to collapse
You may be right. I am not sure. What I do know is that I sold my last three phones after 12-18 months of use and using my method their batteries had the exact same capacity than the day I got them. My wife is charging her phone whenever she feels like it (most of the time she charges to less than 100%) and after less than a year the capacity is reduced.
So I am not sure if I do it right (they way it "should be done") but it works for me.
isaacchook said:
Hey guys, I am so insecure about the battery charging tips for the OnePlus 6. I've seen a lot of posts, some say it does no harm charging to 100% and vice versa. Could anyone please enlighten me? I always charge my phone until 80% and then disconnect the power source.
Thank You
Click to expand...
Click to collapse
It's 2018 battery technology has changed. Charging it to 100% is the same amount of wear as having to charge to 80% more often 1 cycle on a lithium ion battery is how many times it is charged to 100% total. So a charge from 25% to 100% is .75 of a cycle then if you run it down to 75% and charge the 25% back to 100 that is 1 total cycle. It doesn't matter how many times you go to 100% or how many times you plug it in. And dash charge has built in protection against overcharging and it also slows charging when it nears full capacity. So Dash charging isn't any more wear than a slow charger.
---------- Post added at 08:38 PM ---------- Previous post was at 08:36 PM ----------
j0nas_ said:
Not charging to 100% will NOT reduce battery life as much as charging to 100%. You're probably thinking of Lithium-Polymer batteries and not Lithium-Ion batteries which this phone uses.
Click to expand...
Click to collapse
It won't reduce the battery life and neither will just going to 100%
See https://batteryuniversity.com/index.php/learn/article/how_to_prolong_lithium_based_batteries
BTW.. my battery is often hot, running at 30-31c. What Temperature is your battery at when not doing much?
as you want
Just bear in mind your battery will not have the same performance after 2 years of use.
just charge it up to the level you want, then invest in a $30 replacement battery.
Gadgetguy2005 said:
I always charge to 100% but try to avoid the constant use of dash charging. I find that regular fast charging slightly reduces the battery life. Not charging to 100% also reduces the battery life (as the phone will think after a while that 80% is the max it can reach). I want to keep this phone for a long time (got the 8/256 version) and my experience with years of computerized Lithium chargers (for RC stuff) suggests that a. always charge to 100% and b. avoid frequent fast charging, slow(er) charging is better. That lead for me to the max battery life (both capacity and overall life expectancy)
Click to expand...
Click to collapse
How do you not do dash charging if all you got is the charger that came with the phone? Is there a way to actually tell it how to charge the battery?
Static-xy said:
How do you not do dash charging if all you got is the charger that came with the phone? Is there a way to actually tell it how to charge the battery?
Click to expand...
Click to collapse
I have about a half dozen phone chargers - I just use one that is not dash
i emailed oneplus and they told me a new battery after warranty cost only 33 euro including repair and shipping so now that i know this i dont really care about my battery health and will change it out around 2 years
I'm changing phones every year. By this time battery will be fine, so I don't really care how to charge it. My way is to charge it every night with USB cable connected to pc (slow as f*ck, 80% takes about 3 or 4 hrs, but sleeping takes6-8hrs anyway - reason for that is stupid I don't have power socket close to my bed ) - in case I need juice fast - two oneplus chargers somewhere at home.
OnePlus 6 @ Tapatalk
isaacchook said:
Hey guys, I am so insecure about the battery charging tips for the OnePlus 6. I've seen a lot of posts, some say it does no harm charging to 100% and vice versa. Could anyone please enlighten me? I always charge my phone until 80% and then disconnect the power source.
Thank You
Click to expand...
Click to collapse
You should charge your phone to 100% and if you can leave it on a charger even after that, even better
I'm actually a developer and have read the code so please read on for the explanation
If you have had a phone with android M or lower you might be familiar with the "android is starting/upgrading" screen where it showed "optimising app x of total"
So, Google removed that code in N right? Why is this a bother
Actually wrong, that code was simply relocated
The code was moved from the boot process to when the device was charging (that is, plugged in), full charged (that is, 100%) and idle (idle = device is not physically moving)
Once this condition is satisfied, the code behind the "android is starting" screen runs in the background and starts optimising apps
In other words, you have to keep your phone connected to a charger in order to finish this process
Which is why it is a good idea to charge overnight
What if you don't allow this to happen?
Ever heard of the classic "android system using a lot of battery" issue? You basically force your system to use the JIT compiler which uses a lot of battery and android system comes to the top as a result
In other words if you don't leave your device on a charger long enough, your battery life will suffer anyway
Wiping cache is also a pretty bad idea
So, leave your phone on a charger without worries. Google just made the "android is starting" code a lot more convenient for the user but you have to allow your phone to run that code otherwise it's meaningless
Protip: some root users suggest running "cmd package bg-dexopt-job" in a terminal emulator app as root forces the optimisation to happen. I haven't personally tried it but it won't cause any damage to your phone that's for sure
That doesn't mean you should go try it unless you are aware of what you're doing either
anupritaisno1 said:
You should charge your phone to 100% and if you can leave it on a charger even after that, even better
I'm actually a developer and have read the code so please read on for the explanation
If you have had a phone with android M or lower you might be familiar with the "android is starting/upgrading" screen where it showed "optimising app x of total"
So, Google removed that code in N right? Why is this a bother
Actually wrong, that code was simply relocated
The code was moved from the boot process to when the device was charging (that is, plugged in), full charged (that is, 100%) and idle (idle = device is not physically moving)
Once this condition is satisfied, the code behind the "android is starting" screen runs in the background and starts optimising apps
In other words, you have to keep your phone connected to a charger in order to finish this process
Which is why it is a good idea to charge overnight
What if you don't allow this to happen?
Ever heard of the classic "android system using a lot of battery" issue? You basically force your system to use the JIT compiler which uses a lot of battery and android system comes to the top as a result
In other words if you don't leave your device on a charger long enough, your battery life will suffer anyway
Wiping cache is also a pretty bad idea
So, leave your phone on a charger without worries. Google just made the "android is starting" code a lot more convenient for the user but you have to allow your phone to run that code otherwise it's meaningless
Protip: some root users suggest running "cmd package bg-dexopt-job" in a terminal emulator app as root forces the optimisation to happen. I haven't personally tried it but it won't cause any damage to your phone that's for sure
That doesn't mean you should go try it unless you are aware of what you're doing either
Click to expand...
Click to collapse
Thank you. Understood!
anupritaisno1 said:
You should charge your phone to 100% and if you can leave it on a charger even after that, even better
I'm actually a developer and have read the code so please read on for the explanation
If you have had a phone with android M or lower you might be familiar with the "android is starting/upgrading" screen where it showed "optimising app x of total"
So, Google removed that code in N right? Why is this a bother
Actually wrong, that code was simply relocated
The code was moved from the boot process to when the device was charging (that is, plugged in), full charged (that is, 100%) and idle (idle = device is not physically moving)
Once this condition is satisfied, the code behind the "android is starting" screen runs in the background and starts optimising apps
In other words, you have to keep your phone connected to a charger in order to finish this process
Which is why it is a good idea to charge overnight
What if you don't allow this to happen?
Ever heard of the classic "android system using a lot of battery" issue? You basically force your system to use the JIT compiler which uses a lot of battery and android system comes to the top as a result
In other words if you don't leave your device on a charger long enough, your battery life will suffer anyway
Wiping cache is also a pretty bad idea
So, leave your phone on a charger without worries. Google just made the "android is starting" code a lot more convenient for the user but you have to allow your phone to run that code otherwise it's meaningless
Protip: some root users suggest running "cmd package bg-dexopt-job" in a terminal emulator app as root forces the optimisation to happen. I haven't personally tried it but it won't cause any damage to your phone that's for sure
That doesn't mean you should go try it unless you are aware of what you're doing either
Click to expand...
Click to collapse
Nice, now that's some interesting reading, thanks for the info, didn't know that !
anupritaisno1 said:
You should charge your phone to 100% and if you can leave it on a charger even after that, even better
I'm actually a developer and have read the code so please read on for the explanation
If you have had a phone with android M or lower you might be familiar with the "android is starting/upgrading" screen where it showed "optimising app x of total"
So, Google removed that code in N right? Why is this a bother
Actually wrong, that code was simply relocated
The code was moved from the boot process to when the device was charging (that is, plugged in), full charged (that is, 100%) and idle (idle = device is not physically moving)
Once this condition is satisfied, the code behind the "android is starting" screen runs in the background and starts optimising apps
In other words, you have to keep your phone connected to a charger in order to finish this process
Which is why it is a good idea to charge overnight
What if you don't allow this to happen?
Ever heard of the classic "android system using a lot of battery" issue? You basically force your system to use the JIT compiler which uses a lot of battery and android system comes to the top as a result
In other words if you don't leave your device on a charger long enough, your battery life will suffer anyway
Wiping cache is also a pretty bad idea
So, leave your phone on a charger without worries. Google just made the "android is starting" code a lot more convenient for the user but you have to allow your phone to run that code otherwise it's meaningless
Protip: some root users suggest running "cmd package bg-dexopt-job" in a terminal emulator app as root forces the optimisation to happen. I haven't personally tried it but it won't cause any damage to your phone that's for sure
That doesn't mean you should go try it unless you are aware of what you're doing either
Click to expand...
Click to collapse
What if I charge for a prolonged time but the battery doesn't reach 100%? I.e. if I plug it into my PC (very slow charging) and leave it for a few hours?
Related
Hello everyone
I was wondering if its ok to leave the transformer connected to the charger.
Is it like the Evo with trickle down when it reaches 100%
I dont want to over charge it. If it were my laptop i would disconnect the battery at full charge. But its not possible to do that with the transformer.
I want to keep my cycle count low and prevent over charing.
I also wonder what happens in a few years when the battery is shot...
Charging is what damages Li-Ion batteries... I'd recommend not keeping it on the charger all the time. Android will purposely not keep the battery at 100% to help avoid some damage.
Li-ion prefer to be around 20-80% charge.
When battery is 100% and you keep the charger connected, heat will begin to build up and eventually you will kill your battery.
I'd do as with a notebook: charge till 100%, then remove battery or charger (in case of the tablet charger ) . Then use your tablet and recharge when needed / desired. And from time to time a full charge / discharge cycle won't do any harm.
Just my 2 cents.
Regards.
These tablets don't automatically recognize when it's fully charged and turn off the charging?
Ravynmagi said:
These tablets don't automatically recognize when it's fully charged and turn off the charging?
Click to expand...
Click to collapse
They do. There are other threads asking why thier TF's don't show 100% when unplgged from the charger. Same as it does on my Evo.
I think pretty much every modern device recognizes a full charge and responds accordingly. In fact, MacBooks will throttle performance if the battery ISN'T kept in while the system is running on A/C.
Heat will damage a battery, but it's not heat from charging but heat from operation. If a notebook is poorly designed and the battery is near a heat source, then removing the battery might be a good idea (except with the aforementioned MacBooks), but that's independent of the charging issue.
I think it's fine to keep it plugged in. These devices are smart enough to manage such things. Of course, the TF's charging cable's so short it's hard to use when plugged in, but that's a different issue entirely.
CalvinH said:
When battery is 100% and you keep the charger connected, heat will begin to build up and eventually you will kill your battery.
I'd do as with a notebook: charge till 100%, then remove battery or charger (in case of the tablet charger ) . Then use your tablet and recharge when needed / desired. And from time to time a full charge / discharge cycle won't do any harm.
Just my 2 cents.
Regards.
Click to expand...
Click to collapse
From what I understand this process cannot and will not kill the battery. This did happen in the old type of batteries with the ,emory effect but these new batteries and the OS's management system for charging does not allow the battery to be killed.
it will heat up and that would happen as there is a flow of electricity but not to a level that would kill the battery.
Cheers
IS it normal to go from 4% battery to 99% in under 3 hours ?
I thought this was supposed to take 8 hours to charge.
Cheers,
gpearson1968
gpearson1968 said:
IS it normal to go from 4% battery to 99% in under 3 hours ?
I thought this was supposed to take 8 hours to charge.
Cheers,
gpearson1968
Click to expand...
Click to collapse
Yes that's normal. It's meant to take about 3hrs.
Thanks guys...
Still dont know about it. Because I think its like my EVO and technology got so good that my battery is protected.
I really dont want my transformer to become a expensive paper weight or non-mobile because after a few years it has 45 mins battery life.
I've got the first full charge and full depletion done. Is it ok to use while charging now as long as I fully charge and fully deplete it a couple more times?
error12 said:
Thanks guys...
Still dont know about it. Because I think its like my EVO and technology got so good that my battery is protected.
I really dont want my transformer to become a expensive paper weight or non-mobile because after a few years it has 45 mins battery life.
Click to expand...
Click to collapse
batteries will degrade over time....would you be keeping this tablet for over 2-3 years? a simple battery change could work if ever needed
I am no expert, but I have spent some time searching around the internet looking for information on the best methods for improving the life of a battery. Most of the information I have found said it is bad to completely discharge a Li-polymer battery. The articarles stated it was best to charge the battery when it reaches 20% to avoid shortening its life.
Sent from my DROIDX using XDA App
Batteries are like muscles - they like to be exercised.
Leaving the unit plugged in WILL NOT HURT YOUR BATTERY. Period. The charging circuitry in modern devices is smart enough to cut current to the battery once it has reached a certain level of resistance.
Batteries do not like being deeply discharged. Most devices will shut off before the battery gets too deeply discharged, but it's never a good idea to tempt fate by running it until the device shuts off.
What really determines a battery's life is the number of cycles it has been put through. A cycle would be a full charge followed by a full (or to a lower end threshold) discharge.
The old original Lithium Ion batteries used in laptops would usually last about 300 full cycles or so - about a year if you used it on the battery every day. Partial discharges of course only count as fractions of a cycle.
Given the life of these types of devices, considering we'll likely upgrade to the next big thing in a year or so, I don't think anyone here will come close to 'wearing out' a battery.
EMINENT1 said:
I've got the first full charge and full depletion done. Is it ok to use while charging now as long as I fully charge and fully deplete it a couple more times?
Click to expand...
Click to collapse
As stated, these are Li-Ion batteries, and they do not need to be trained. The only reason you might need to do any training is to calibrate Android's understanding of the battery (although I doubt you need to do a full discharge for that, either).
It's not going to suddenly kill it, but it will over time hurt your battery's life.
I went ahead and did a full discharge/charge cycle, but only because Asus said to do so in the manual. Maybe the copywriter just copied/pasted from a circa 1990's manual for a device with a NiCd battery, but I figured if they're suggesting it, I might as well do it.
Hi guys
I know this question has been asked many times before... whether to fully charge before using the phone the first time.
I believe this is something which stems from the time before Lithium-ion batteries.
However, I wonder if there is something with the battery stats which will be affected by turning on the phone before completely charging the phone?
In CWM there is a Wipe battery stats function... I was thinking if this was deleting some sort of info about the battery which was created the first time the phone is installed....
Some battery stats/calibration or similar is the only thing I can imagine which would benefit from having a full charge before first use. Can somebody enlighten me?
My girlfriend will be buying a new phone tomorrow (HTC Sensation on sale), and I would like to know first if their are any benefits to charging before first use?
Please don't just guess or come with comments like "I just used mine right away, no problems".
Thanks in advance.
BR, Martin
Dont need any calobration soft or fully charged battery. Use it as you need.mentioned soft for calibration is needed when you flash device with new Rom to reset old settings
Regards
Sent from my LG-GT540 using XDA
Fully charging the battery, without intermittently taking it off the charger, running it down fully, then recharging it fully is the best thing to do.
It needs a full charge before the first use so that the phone will understand what a full charge is but that's about it.
mArtinko5MB said:
Dont need any calobration soft or fully charged battery. Use it as you need.mentioned soft for calibration is needed when you flash device with new Rom to reset old settings
Click to expand...
Click to collapse
"to reset old settings". When are these settings created? I'm thinking if the original battery settings are created at first boot on a brand new phone.
MissionImprobable said:
It needs a full charge before the first use so that the phone will understand what a full charge is but that's about it.
Click to expand...
Click to collapse
How does the phone understand what a full charge is? Does it create some battery settings file at first boot?
If not, then I guess fully charging could be done while the phone is being used by the user?
I haven't become more certain from the above answers... I still don't know if the phone somehow does a calibration to the fully charged battery which could be a reason for charging it before first boot.
icepally said:
Fully charging the battery, without intermittently taking it off the charger, running it down fully, then recharging it fully is the best thing to do.
Click to expand...
Click to collapse
no offence, but this is bull****. This treatment of battery was good for old mobiles and absolutelly not neccessary for smartphones. Don't mess with him. I didn't fully charged battery in first use, now on my gt 540 with optimized 2.3.7 can get 5 day on battery !
Don't be confused by battery settings, they are stored in system, you mustn't bother with that.
Fully charged means 100% shown on status bar, nothing more nothing less. System know how to treat battery, no need for calibration(it's needed only when changing ROM -> new system -> new treat -> need to reset old settings)
Your only task with battery is, once a month drain her to 0% and charged to 100% without abortion (but also not neccessary), and charging mainly when 30-40% of battery. It's not recommended to go under there values for good life of battery
Regards
Please use the Q&A Forum for questions &
Read the Forum Rules Ref Posting
Moving to Q&A
mArtinko5MB said:
no offence, but this is bull****. This treatment of battery was good for old mobiles and absolutelly not neccessary for smartphones. Don't mess with him. I didn't fully charged battery in first use, now on my gt 540 with optimized 2.3.7 can get 5 day on battery !
Don't be confused by battery settings, they are stored in system, you mustn't bother with that.
Fully charged means 100% shown on status bar, nothing more nothing less. System know how to treat battery, no need for calibration(it's needed only when changing ROM -> new system -> new treat -> need to reset old settings)
Your only task with battery is, once a month drain her to 0% and charged to 100% without abortion (but also not neccessary), and charging mainly when 30-40% of battery. It's not recommended to go under there values for good life of battery
Regards
Click to expand...
Click to collapse
I agree.
Fully charging and discharging was a practice to deal with the memory effect of older NIMH or NICD batteries.
Putting unnecessary charge cycles on todays cell batteries, just lessens their lifetime. They all offer an amount of charge cycles and each cycle reduces their capacity. The detailed amount of chargecycles that is sometimes in some infos, is usually something like after X amount of charge cycles the battery reaches 80% of its original capacity.
I'm not sure but i would guess that the phones determine the charge status through hardcoded characteristics of the used battery type, i.e. voltage dropoff etc. Fully charged at 4.22V, etc etc.
The batteries in our phones don't come fully charged is probably because storing these types of batteries at full charge for too long actually hurts them.
Storing them at something like ~3.8V is recommended for longer periods.
I'm no expert on this topic, so tell me if you find something wrong in my statement , i'm eager to learn.
Already proven
I wish I could find the article, but there was an experiment run on lithium ion batteries, particularly based on proliferation of mobile and these exact questions, where they ran down/recharged in different scenarios (different discharge percentages) until the battery went bad. They determined that the more you charge (the less you let it drain before re-charging), the more cycles your battery lasts. So it's as some have said, exact opposite of an old NiXX tech. This was done to < 10% increments, so they showed even a decrease in cycles between recharging at 95% and 90%
Moral of the story, don't let you're battery drain completely or even get too low, and charge as often as you can. This is why I use a dock on my desk at work.
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
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
I don't use my P6200 a lot I have to say, so I do charge it to use it but leave it to run out of battery. The problem is such, that, when I charge my tablet from flat, it takes such a long time even to show the charging icon. Has anyone experienced a problem similar to me, and how they have dealt with it?
It would be nice to have a script which causes the tablet to shutdown at 10% or something like that. That gives enough energy to start up the charger icon.
gwhite5 said:
I don't use my P6200 a lot I have to say, so I do charge it to use it but leave it to run out of battery. The problem is such, that, when I charge my tablet from flat, it takes such a long time even to show the charging icon. Has anyone experienced a problem similar to me, and how they have dealt with it?
It would be nice to have a script which causes the tablet to shutdown at 10% or something like that. That gives enough energy to start up the charger icon.
Click to expand...
Click to collapse
Yes this is a normal the easiest way to prevent this is to feed you kid/s (device/s)before you store them, Why does this happen? Your battery is simply below the min boot voltage/ is critically low
eg. you have a 3.7 volt 4AH battery at 100% its 4.255volt at 0% its 3.145volt if you let it run dry 0% and store it and it falls to for arguments sake to 2.9 volt then it is below the min voltage and it will take a while to charge to requiered voltage as with all batteries
Please not you will get better battery life from your device if you charge it more frequently and not run it down to much.
My tab has been serving me a a phone for 28.5 months calls from 8am to 5 pm and games from 7pm to 11pm almost everyday my device was was built 2012/05 never needed a replacement battery pack so far and still get 4-10 hour use if i deep discharge over weekends
More info if you run a device dry
Please keep you OEM charger close as mine ran dry and "locked itself"(this is what the samsung tech said) and i tryed a S3 note2 and note 8 charger for 30min +/- each with my oem charge lead and it denied to charge only the orginal charger worked in 1min i was up and running ... was a worried device was 4 weeks old
Thanks very much @matthys
First of all, i have removed the battery from the tablet and i am supplying energy from the battery terminals (in this case, i want to be able to use my charging socket for the “OTG function”)
Even though giving the constant 4.2 volt electricity with this technic, battery gauge still drains from the tablet
im using chinese branded device as tablet by the way.Device is rooted with Android 10 go edition in it.
Normally, it has 2000mAh battery and the draining speed/principle is same as the above scenario
i’m waiting for the solution ideas or any suggestions
What exactly are you trying to accomplish?
Lithium ion batteries should NEVER be directly charged with a power source. Tablets and phones have charging controllers that regulate the charging current and voltage to avoid overcharging the battery, which at best reduces battery life, and at worst can cause catastrophic failure - including explosion and fire.
V0latyle said:
What exactly are you trying to accomplish?
Lithium ion batteries should NEVER be directly charged with a power source. Tablets and phones have charging controllers that regulate the charging current and voltage to avoid overcharging the battery, which at best reduces battery life, and at worst can cause catastrophic failure - including explosion and fire.
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First of all, thank you for thinking of me. I am an experienced electronic engineer and have knowledge of Li-ion batteries. For the project that I am working on, I have to not use batteries due to the variation in ambient temperature.
Since I know that a fully charged battery provides 4.2 volts of energy, i remove the battery and so, supply this voltage from the place where the battery should normally be inserted.
When I turn on the tablet, the battery percentage shows 100%, after 20 minutes it drops to 85% approximately.
I don’t give the direct energy to the battery btw, on the contrary, i’m giving the energy from another source that the battery should normally give.
The attached photo can help you to have an idea for the situation
I just need to prevent the system for lowering the battery level as if like there is still battery in the tablet
brkedmrts said:
First of all, thank you for thinking of me. I am an experienced electronic engineer and have knowledge of Li-ion batteries. For the project that I am working on, I have to not use batteries due to the variation in ambient temperature.
Since I know that a fully charged battery provides 4.2 volts of energy, i remove the battery and so, supply this voltage from the place where the battery should normally be inserted.
When I turn on the tablet, the battery percentage shows 100%, after 20 minutes it drops to 85% approximately.
I don’t give the direct energy to the battery btw, on the contrary, i’m giving the energy from another source that the battery should normally give.
The attached photo can help you to have an idea for the situation
I just need to prevent the system for lowering the battery level as if like there is still battery in the tablet
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Click to collapse
Oh okay, I suspected that's what you were doing, I was just trying to make sure in the interest of safety and all that. It's all fun and games until someone gets hurt...
It's really hard to say why the battery gauge reports 85% even though you're supplying 4.2 volts of power. Depending on the firmware, Android battery gauges aren't simple voltmeters that simply display a percentage based on a certain voltage curve. They're a bit more advanced than that, and factor in the load on the battery too.
Here is a better explanation on how the systems work.
I would like to add another question that makes me wonder, will the battery percentage stay constant somewhere and/or will it start to rise after some point?
If there is no way to prevent the battery from decreasing in terms of software, I don't want the screen to go black when it reaches 15% and turn off at 0%. I'm going to make a supercapacitor and a modification to charge.
Or if I arrange the android as if there is a battery near infinity, I think that I can almost stop the battery percentage decrease rate, is that logic possible?
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brkedmrts said:
I would like to add another question that makes me wonder, will the battery percentage stay constant somewhere and/or will it start to rise after some point?
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I honestly don't know.
brkedmrts said:
If there is no way to prevent the battery from decreasing in terms of software, I don't want the screen to go black when it reaches 15% and turn off at 0%. I'm going to make a supercapacitor and a modification to charge.
Or if I arrange the android as if there is a battery near infinity, I think that I can almost stop the battery percentage decrease rate, is that logic possible?
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Click to collapse
If you're powering the device via a constant DC supply that doesn't drop voltage under load, I would imagine the battery indicator would eventually stop at some point and just remain at a certain percentage. Again, this depends on what sort of controller the device has; if it's an adaptive learning battery management system, it might be ignoring the supply voltage, and is calculating how much power the device has used so far. Eventually it'll figure out that the voltage isn't dropping as expected, but I have absolutely no idea what it'll do.
I'd say just leave it playing video or something for a while and see what happens.
V0latyle said:
I honestly don't know.
If you're powering the device via a constant DC supply that doesn't drop voltage under load, I would imagine the battery indicator would eventually stop at some point and just remain at a certain percentage. Again, this depends on what sort of controller the device has; if it's an adaptive learning battery management system, it might be ignoring the supply voltage, and is calculating how much power the device has used so far. Eventually it'll figure out that the voltage isn't dropping as expected, but I have absolutely no idea what it'll do.
I'd say just leave it playing video or something for a while and see what happens.
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I had decided to try my super capacitor idea. However, For a device whose charge level drops while charging with its original battery installed, this was not very wise.
but I added a capacitor as shown in the attached image and I've been testing it for 25 minutes.
battery percentage 99% for last 20 minutes.I t hope I managed to manipulate it somehow.
I will be sharing the results,Also, thank you for your interest.
brkedmrts said:
I had decided to try my super capacitor idea. However, For a device whose charge level drops while charging with its original battery installed, this was not very wise.
but I added a capacitor as shown in the attached image and I've been testing it for 25 minutes.
battery percentage 99% for last 20 minutes.I t hope I managed to manipulate it somehow.
I will be sharing the results,Also, thank you for your interest.
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Click to collapse
Hey there, were you able to work it out?