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[Q] Faulty charger ruining battery life?

My battery was perfectly fine on my Galaxy Note GT-N7000 until I forgot my charger at friend's and was forced to use the HTC one which came with my old HTC Desire phone. (it's retail, not a Chinese one, has the same output values as the Samsung one).
Now, my battery life is just horrible(after 3 hours of doing nothing except sending a few messages, the battery is at 63%, after 6 hours its on 15%, compared to approximately 15+ hours of life) and I'm wondering..could a faulty charger kill the battery by charging it? When my phone is on charge, my touchscreen misbehaves - when I'm dragging my finger on Swype, the line isn't straight, but rather is zippy and looks like the line on a heart rate monitor. Also, it tends to not register my finger when I drag it too fast, and it breaks the word into two parts as if I moved my finger away, then pressed again. Phone kinda slows down as well.
I did not install any extra apps, I'm just thinking about doing a Factory Reset at least, but I doubt that would help.
I am really frustrated over this, I just literally want to throw the phone out of the window along with the charger. Any suggestions, please?

I have almost same thoughts, I left my Note charger in my European apartment and in US I am now using charger from Galaxy S2 and have phonecharged fully before I go to sleep, put it in Airplane mode and over night drains battery 30% doing nothing!!! When I charge with Samsung car charger when I am driving in the morning it charges in less 2 hrs and battery lasts 12 hrs and I still have 25% left, but with heavy using - phone calls, messages, email, facebook, listening internet radio etc.. Is something wrong with usb connection?

Nope.Wrong charger is the reason.Galaxy note's charger is rated ar 1 Ah whereas SII's or the Desire's are not.So it takes more than normal time for charging and as even the voltage is low,the battery standby isn't good enough.1 AH is the normal current required by a note's battery to get charging.

[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.
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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.

Battery Care compatibility

I just noticed that I only get the batterycare message when I charge the phone before bed via a cable. When I charge it overnight wirelessly it does. It have the message (how it will charge to 90% by 9am or whatever). Does this mean batterycare isn't working when we charge wirelessly?

hey... do you know how you got Battery Care to show up? I have my phone for just almost a week now... I charge long overnight before sleep and wake-up around same timing, but still don't have the Battery Care showing up.... I tried toggling off then ON again before sleeping but still doesn't show up... do you know how I should fix this?
I hope it has nothing to do that it's a fast charger right? the standard fast charger that comes with it.....the QC3.0 one..
Thanks
Cheng

I used an XZ and now use an XZ Premium and have found the Battery Care feature frustrating for the reasons you cite. It only works under fairly narrow conditions. And then it has to "relearn" after a factory reset or firmware flash.
My workaround is plug my phone into a fish aquarium light timer overnight and program it to turn on (begin charging) at a time that results in the phone being at 100% when I wake up. That way the phone doesn't sit on the charger at 100% for hours on end...which is what Battery Care aims to do.
And it works for any phone.
I also use an old Sony Charger from my 2012 Xperia T. It charges really slowly...which results in a lower amount of heat in the battery and hopefully prolongs its lifespan. I don't need fast charging overnight!

I've only been using a wireless charger, "have them all over", since I received the phone and I get the battery care notification when the battery is below 70% otherwise the message doesn't show up.

chili_red said:
I've only been using a wireless charger, "have them all over", since I received the phone and I get the battery care notification when the battery is below 70% otherwise the message doesn't show up.
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+1
I don't use Battery Care,just wireless charging, primarily at night, with a table top fan going all night as well.
During workweek usage, I don't even bother topping off nightly, this phone does well between charges to skip a day &/or, just throw it on the charger when I wake up & take it off on my way out the door for the day. I don't worry about having it @ 100%...,50-60% will get me through a 12hr shift w/room to spare.
Sent from my Sony H8296 using XDA Labs

Charge Limiting to Extend Battery Life

Limiting the battery charge to a fraction (70%-80%) of it's full capacity is a well known way to greatly extend the battery's charge capacity lifetime. There are several (root) apps created to automate this, that stop the phone from charging once a selected charge level is reached. Battery Charge Limit is one (https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002), ACCA is another (https://github.com/MatteCarra/AccA/). So far I have not been successful getting either of those to work with the ROG2. I was wondering if anybody has had any success with those apps or any other way to limit the battery charge on the ROG2?

The Rog phone 2 has its own function that lets you automatically stop charging.
But keep in mind this function is only useful if you are planing to keep the phone connected to a charger 24/7 then it's useful. Otherwise it's worthless if you disconnect your phone once it's 100% charged.
Battery also needs to discharge and recharge to keep it's capacity and function going. If you don't do this it can wear the battery out even if you stop charging at 70-80%.

Jake.S said:
The Rog phone 2 has its own function that lets you automatically stop charging.
But keep in mind this function is only useful if you are planing to keep the phone connected to a charger 24/7 then it's useful. Otherwise it's worthless if you disconnect your phone once it's 100% charged.
Battery also needs to discharge and recharge to keep it's capacity and function going. If you don't do this it can wear the battery out even if you stop charging at 70-80%.
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Click to collapse
Most of what you said is wrong.
The ASUS Power Master Battery Care feature slows and delays the charging but still charges to 100%. The feature is only useful if you have a regular charge schedule (which I don't, and DO mostly leave the phone on the charger) and even then, it's still charging to 100%. Repeatably charging a LiPo battery to 100% WILL decrease it's capacity significantly faster than if only partially charged. All phones already slow charging at high charge levels. There is no advantage to discharging the battery.
Read and learn: https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
If you can reference any authority to support your position, I'd love to see it.

MyronAz said:
Most of what you said is wrong.
The ASUS Power Master Battery Care feature slows and delays the charging but still charges to 100%. The feature is only useful if you have a regular charge schedule (which I don't, and DO mostly leave the phone on the charger) and even then, it's still charging to 100%. Repeatably charging a LiPo battery to 100% WILL decrease it's capacity significantly faster than if only partially charged. All phones already slow charging at high charge levels. There is no advantage to discharging the battery.
Read and learn: https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
If you can reference any authority to support your position, I'd love to see it.
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Click to collapse
Did you ever know that even authority can be wrong in facts as well? I can confirm that battery feels alot better with discharge and charge than what it is with 100% all time or 70-80%.
How I can confirm is that I have a Microsoft surface Pro 4 and when I kept it on charger at 100% for a day or two the wear level jumped from 0% to 3% but when I discharged it and recharged it after some time then tear level on battery went back to 0% and capacity was back to its full capacity again. So discharge and recharge does not always wear the battery out. It actually makes battery feel better too.
So please don't always believe what internet and what authority States. Since on internet there is alot of false facts and authority gives alot of nonsense facts alot of times too.

Is it really wise to basically degrade your battery by 20% out of the box just so you can have 95% in 2 years? If anything, heat is the greatest factor for degradation. If you're that worried, just use a 2 Amp charger.

dennis96411 said:
Is it really wise to basically degrade your battery by 20% out of the box just so you can have 95% in 2 years? If anything, heat is the greatest factor for degradation. If you're that worried, just use a 2 Amp charger.
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Click to collapse
Wise? Absolutely. Is it the perfect solution for everyone? No

dennis96411 said:
Is it really wise to basically degrade your battery by 20% out of the box just so you can have 95% in 2 years? If anything, heat is the greatest factor for degradation. If you're that worried, just use a 2 Amp charger.
Click to expand...
Click to collapse
Yes, heat is a factor, but keeping the battery at 100% will degrade the battery faster regardless. If you simply do not need the additional 20% than there is no advantage to charging to 100%. My usage scenario is that the phone is plugged in a lot of the time and I very rarely need the full battery capacity. I've had several phone batteries bloat up under this scenario (and not using any fast charging).
When batteries degrade they don't stop at 80%. They generally keep degrading fairly rapidly. And you don't just lose capacity, as the battery degrades the internal resistance increases, which results in throttling and/or crashing.
BTW on some phones, ACCA will stop charging the battery when it reaches the desired charge level and run the phone entirely from external power.

willhemmens said:
Wise? Absolutely. Is it the perfect solution for everyone? No
Click to expand...
Click to collapse
Agreed. If manufacturers still offered replaceable batteries in their flagships, this would be somewhat of a moot point. When dealing with a sealed battery that is expensive and time consuming to replace, it's wise to do everything reasonable to protect the overall lifespan of it.
As for keeping it charged at 100%, I did that once and killed a battery in about 6 months. Not doing that one again.

Guys, it's so nice you are debating over the battery charging metaphysics but it does not help us solve the issue: our rooted phone can not be charged in a smart way using magisk+acc, ACCA or Battery Charge Limit.
Any ideas?

I'm facing issue with my Rog 2, my phone is not charging fast
1. I'm using 18w charger come with the phone to charge
2. I have used Xiaomi 2i power bank with 18w output to charge my phone (still not working)
3. I restart the phone on charging it goes down 36% to 29%
4. On charging when i restart the phone it goes 8% to 13%
5. I'm facing this problem from the yesterday
6. Double plus sign on battery icon as well as fast charging text on home screen is also not showing while charging
What is the issue please help anyone

Submit a bug report to acca and maybe at least someone starts caring for the ROG Phone. The reason why it doesnt work is simply because ASUS does its own stupid thing while charging (thats what happens when 100 OEMs cook their own soup, a mess).
About the battery health:
A battery keeps its best health when its charged between 25-75%, is kept below 30°C and charged as slow as possible. Thats why its wise to stop charging at 80% with a slow charger, especially when you have a big battery anyway that lasts for a day with 80% charge.

Himan99 said:
I'm facing issue with my Rog 2, my phone is not charging fast
1. I'm using 18w charger come with the phone to charge
2. I have used Xiaomi 2i power bank with 18w output to charge my phone (still not working)
3. I restart the phone on charging it goes down 36% to 29%
4. On charging when i restart the phone it goes 8% to 13%
5. I'm facing this problem from the yesterday
6. Double plus sign on battery icon as well as fast charging text on home screen is also not showing while charging
What is the issue please help anyone
Click to expand...
Click to collapse
currently facing the same issue and this is the first time in 2 week time. though on the lock screen, it shows fast charging.. but it isnt working smh

apollo3x said:
currently facing the same issue and this is the first time in 2 week time. though on the lock screen, it shows fast charging.. but it isnt working smh
Click to expand...
Click to collapse
Change the cable and try also try with different fast charging adapters or fast charging powerbank(mi power bank)
My problem solve by changing the cable
---------- Post added at 03:55 AM ---------- Previous post was at 03:54 AM ----------
MyronAz said:
Limiting the battery charge to a fraction (70%-80%) of it's full capacity is a well known way to greatly extend the battery's charge capacity lifetime. There are several (root) apps created to automate this, that stop the phone from charging once a selected charge level is reached. Battery Charge Limit is one (https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002), ACCA is another (https://github.com/MatteCarra/AccA/). So far I have not been successful getting either of those to work with the ROG2. I was wondering if anybody has had any success with those apps or any other way to limit the battery charge on the ROG2?
Click to expand...
Click to collapse
Without root any chances
Because i don't want to root my phone

Himan99 said:
Without root any chances
Because i don't want to root my phone
Click to expand...
Click to collapse
There is no programmatic way to internally control the charging process without root, however there are some (not as good) alternatives.
First there is an app Accubattery that will give you a notification when the battery reaches a given level, you have to then disconnect the charger manually.
A second way to do this would be to use a smart plug and control it with Tasker. Don't know if anyone has done this but it should be possible.
Another possibility that is not vailable yet would be a kickstarter project called BatteryPal. This is a charging cable that had a bluetooth interface built in to it that would control charging using an app on the phone.They arr saying it will be available March 2020, but who knows.

I'm facing the same situation here. I'm next to a charger most of the time, so I like to use slow charging and not going above 80%. I was used to have battery charge limit installed in all my devices, but found this is not working with the rog phone.

My rog Phone 2 global edition over heats while charging

has anyone found a way even with root? I've tried ACC and some other app but they all done work.

I've also just tried ACC and Battery Charge Limit, but neither worked. It looks like there is something that keeps overwriting the charge control file all the time and allows the battery to charge anyway. Battery Care was disabled while doing this.
I am rooted, so I am able to test any potential solution.

Someone posted on r/rogphone2 a solution for this:
https://www.reddit.com/r/ROGphone2/comments/ev0put/hows_this_it_never_reaches_100/
I've just tested it and it works for me.

Does anyone know of a legit charging adapter that isnt fastcharge and doesnt damage the phone or gets damaged itself after a while? I want to charge my phone without fastcharge but cant find a good charger
My old htc m8 charger got damaged after just a few times of using! Seems like the phone drained it dry

Smart Charge feature

Hi there,
to be honest, I have posted that question already in the P30 forum. But as both devices are quite similar and the Pro has a wider reach I decided to repeat it here. I hope you don't mind...
With the new EMUI10.1 also the "Smart Charge" feature arrived. Well, here at my P30 as a switch at least. I am really not sure, if this is working at all. I have it activated since idk 5 weeks or so and am using the original cable and charger. The charging curve, as can be seen in the battery settings, is not displaying any slower or even paused charging speed, the curve goes straight up until 100% ~1h after plugging in. Also there is nothing indicating an activated smart charging right when I plug in the charger.
What is your experience here, can you guys see any difference, have you seen any proof this is working?
Many thanks.

Yes, I've noticed it on both of my Huawei phones. It basically slows down or even stops charging so it doesnt max out, in order to preserve battery life. So you can leave it on the charger forever but it'll never hit 100%. My P30 pro sits on the charger almost daily and sits around 80-90%.

Maybe it has an algorithm that knows when you dont use it and charges to max then? My phone is on a wireless charger about 95% of the time throughout the day and night because it isnt used often. Sometimes it'll popup telling me that its using the smart charge feature and if I want to disable it blah blah.

adamlee2012 said:
I wake up every morning and mines on 100%. Looking at the battery graph it goes straight to 100% doesn't stop at 80 and charge nearer the time I unplug it so not quite sure how they've implemented it. Sony pauses charging til the usual time you unplug. Maybe when it reaches 100 on Huawei it stops charging.
Click to expand...
Click to collapse
That matches my experience. Also the Sony part.

Hi guys, I noticed that even if the smart charge is on and I always charge at 80% max, if I forget to unplug it it goes up to 100%. SO I suppose it is not working... What is your experience about it?

adamlee2012 said:
I think it charges to 100% then stops charging... And keeps it at 100%... I charge my phone every night... I never see it pause charging at 80% looking at the charging graph.
Click to expand...
Click to collapse
Thank you for your feedback! So it is not working as it should. I got it should "understand" your habits and charge it accordingly, never going over 80%.
It's a pity, I found it really useful, but if it works like this it is useless.

beggar23 said:
Hi there,
to be honest, I have posted that question already in the P30 forum. But as both devices are quite similar and the Pro has a wider reach I decided to repeat it here. I hope you don't mind...
With the new EMUI10.1 also the "Smart Charge" feature arrived. Well, here at my P30 as a switch at least. I am really not sure, if this is working at all. I have it activated since idk 5 weeks or so and am using the original cable and charger. The charging curve, as can be seen in the battery settings, is not displaying any slower or even paused charging speed, the curve goes straight up until 100% ~1h after plugging in. Also there is nothing indicating an activated smart charging right when I plug in the charger.
What is your experience here, can you guys see any difference, have you seen any proof this is working?
Many thanks.
Click to expand...
Click to collapse
According to the official, smartphones powered by lithium batteries ages differently, which results vary in terms of charging or simply called slow charging as well as short battery life.
For example, if a user leaves the charging overnight or for a long time. The charger keeps supplying the power to the battery, a state called overcharging. Repeating this process causes battery aging.
But with accurate management, the battery aging can be slow down and extend the battery life.
This is where Smart Charging Mode comes in place and uses the phone’s built-in AI capabilities to learn usage patterns. To slow down the battery to charge 100% when required.
For example, if the smart charging mode is enabled and the battery reaches 80%. The charging automatically slowdowns (charging rate) before it reaches 100%. This whole process prevents the phone to keep charging at 100 percent without harming the batter

P20pro here, same problem. Night or day, it seems to charge at the same rate, not waiting at 80%, no sign of that toggle doing anything.

skodann said:
According to the official, smartphones powered by lithium batteries ages differently, which results vary in terms of charging or simply called slow charging as well as short battery life.
For example, if a user leaves the charging overnight or for a long time. The charger keeps supplying the power to the battery, a state called overcharging. Repeating this process causes battery aging.
But with accurate management, the battery aging can be slow down and extend the battery life.
This is where Smart Charging Mode comes in place and uses the phone’s built-in AI capabilities to learn usage patterns. To slow down the battery to charge 100% when required.
For example, if the smart charging mode is enabled and the battery reaches 80%. The charging automatically slowdowns (charging rate) before it reaches 100%. This whole process prevents the phone to keep charging at 100 percent without harming the batter
Click to expand...
Click to collapse
I still cannot see any slowdown in charging here. How about you?
Sent from my [device_name] using XDA-Developers Legacy app

None... Charges as usual over night. Goes to 100% in about 1 hour and stays there

So basically it charges up to 80% in regular mode, after it starts to charge or very slowly or just before u wake up to 100%.. Yes, is learning at what time usually u touch for the first time the phone..
Or at least, this is what should do
Sent from my VOG-L09 using Tapatalk

duff91 said:
So basically it charges up to 80% in regular mode, after it starts to charge or very slowly or just before u wake up to 100%.. Yes, is learning at what time usually u touch for the first time the phone..
Or at least, this is what should do
Sent from my VOG-L09 using Tapatalk
Click to expand...
Click to collapse
Exactly, "should do". Instead the phone is charging quickly and straight to 100% without any slowdown.
Sent from my [device_name] using XDA-Developers Legacy app