Database Info

Connect the charger without battery

Is it possible to connect charger without battery so that i can use device all day and avoid over-charge or possible battery damage?

Beautiful just Beautiful
Guys i have another one for all of you
"Is there a way that i can use my Phone without connection so that i will have no bill charges ?"

Batteries in Tornado can (even should) be charged often Don't worry about it

Yeah, over-charging is no problem. It'll stop charging when it's full.
This does raise an interesting question, one I haven't really bothered to try but have just now become curious about. Can you plug the phone into the wall, sans battery, and use the phone still? Or will it only function, plugged in or not, with the battery installed?

Phone turns off when you get battery out :/

djsleepwalker said:
Yeah, over-charging is no problem. It'll stop charging when it's full.
This does raise an interesting question, one I haven't really bothered to try but have just now become curious about. Can you plug the phone into the wall, sans battery, and use the phone still? Or will it only function, plugged in or not, with the battery installed?
Click to expand...
Click to collapse
LOL, I just tried that last night, and... ohh Noo it don't even turn the power light on w/o a battery... so @Amaric: Keep charging it!

I am aware that phone is not working if you take out the battery and connect it to a charger. I was wondering if there is some kind of a workaround.
My plan was to have phone switched on for months with wireles ON too. That just can't be good for battery and it could even be dangerous.

amaric said:
I am aware that phone is not working if you take out the battery and connect it to a charger. I was wondering if there is some kind of a workaround.
My plan was to have phone switched on for months with wireles ON too. That just can't be good for battery and it could even be dangerous.
Click to expand...
Click to collapse
Do these tests, and post results
Turn off power savings on Wi-Fi and leave phone ON, doing something over the internet, just idling, so that the LCD is off. Say for example: acting as router.
Conditions:
1. Phone w/full battery -
2. Phone charging w/full battery -
How long did he battery last? How did the phone temperature change? What would you guess would happen in 48hrs of usage?
EDIT: My experience with Wi-Fi is that it drains more power than the charger output. Temperature raises substantianlly w/o LCD, gets extreamly hot w/LCD on. So what would be the options?

wird
when im booting linux and the phone is charging you can take the battery out but the phone will still be on nice

bestever said:
when im booting linux and the phone is charging you can take the battery out but the phone will still be on nice
Click to expand...
Click to collapse
Is this a joke? If not, then some change to a software (OS) could do the trick.

amaric said:
Is this a joke? If not, then some change to a software (OS) could do the trick.
Click to expand...
Click to collapse
my opinion? If it does stay on after removing the battery, then it'll do the same if you have the phone on while running Windows, and charging and remove the battery. Battery charging is not handled by OS, its handled by Hardware.

markanthonypr said:
My experience with Wi-Fi is that it drains more power than the charger output.
Click to expand...
Click to collapse
Does anyone else think this is true? I think it would be unlikely that having the screen off but wifi on would use more power than the wall adapter provides.
I suspect that you could jumper the battery connections to mimic a full battery, but I am not going to try.

I think you can put resistors to mimic the internal resistance of a battery, but I wouldn't recommend it. If anything goes wrong you might burn out the charging/power control circuit which probably would turn your phone to a brick.
Oh, and the whether it charges when plugged in and using WiFi depends on your charger. I've got a 6V 2.4A (15W) charger for my phone, good luck using up all that juice with a Tornado. That thing easily charges my TyTN with HSDPA (3G), WiFi, Bluetooth and screen active.
15W is more or less what my laptop uses under normal load

[Q] How to recharge the over-discharged battery?

Hi all.
I've over-discharged my stock battery and now it doesn't charge. It lights up green as soon as I plug the charger. I've tried different chargers but didn't help.
I've made this using short circuit so don't think it's related to Sensation. You may ask why I tought over-discharging may solve the touchscreen issues. Don't know if it's solved because phone doesn't open.
Do you have any advice to restore the battery rather that getting a new battery? I've already ordered new battery though.

Certain laptop battery manufacturers use a circuit which stores battery charge information, but is itself, "kept alive" by the residual current in (even a dead) battery.
I've seen the case on a number of times that discharging below the "allowed" level causes this circuit to fail, thus the communication between battery and device is incorrect, inaccurate or, at worst, not there at all.
(this is why there are more than just + - on your battery)
You could find the correct recharge rate for the battery - current and voltage - and charge it manually, and hope that said 'battery state circuit' comes back to life, but honestly, I think you'll be, as they say, SOL.
I've had perfectly good laptop batteries, holding a full charge, having a great discharge rate, but the laptop would refuse to accept it, just because of this little circuit.
WARNING: Charging / over charging / charging in a way other than in accordance with the original device literature can VERY likely cause the battery to fail completely, including, but not limited to FIRE or EXPLOSION! DO NOT PROCEED UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING. LiPo (and LiIon for that matter) are EXTREMELY DANGEROUS when used wrongly!
All the above said, have fun, don't blow yourself up, and let us know how you get on. Also, from a personal point of view, I'd be interested to know the 'technical reasons' behind the thought that over-discharging could solve the touch-screen problem - can you remember where you got the info originally?

Figure_desire said:
Hi all.
I've over-discharged my stock battery and now it doesn't charge. It lights up green as soon as I plug the charger. I've tried different chargers but didn't help.
I've made this using short circuit so don't think it's related to Sensation. You may ask why I tought over-discharging may solve the touchscreen issues. Don't know if it's solved because phone doesn't open.
Do you have any advice to restore the battery rather that getting a new battery? I've already ordered new battery though.
Click to expand...
Click to collapse
wtf? did you shortcut the battery or the phone? if shortcut the battery it my be blown. Anywyas you could try jump charging it, unplug and plug it in fast, or put it in a outlet which has a switch and try toggling it on and off for some minutes, you may be able to jump it up to the voltage it needs to start charge

niddnet said:
Certain laptop battery manufacturers use a circuit which stores battery charge information, but is itself, "kept alive" by the residual current in (even a dead) battery.
I've seen the case on a number of times that discharging below the "allowed" level causes this circuit to fail, thus the communication between battery and device is incorrect, inaccurate or, at worst, not there at all.
(this is why there are more than just + - on your battery)
You could find the correct recharge rate for the battery - current and voltage - and charge it manually, and hope that said 'battery state circuit' comes back to life, but honestly, I think you'll be, as they say, SOL.
I've had perfectly good laptop batteries, holding a full charge, having a great discharge rate, but the laptop would refuse to accept it, just because of this little circuit.
WARNING: Charging / over charging / charging in a way other than in accordance with the original device literature can VERY likely cause the battery to fail completely, including, but not limited to FIRE or EXPLOSION! DO NOT PROCEED UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING. LiPo (and LiIon for that matter) are EXTREMELY DANGEROUS when used wrongly!
All the above said, have fun, don't blow yourself up, and let us know how you get on. Also, from a personal point of view, I'd be interested to know the 'technical reasons' behind the thought that over-discharging could solve the touch-screen problem - can you remember where you got the info originally?
Click to expand...
Click to collapse
This is my second unit and it has touchscreen problems too. I'm not an expert but here is why I did that.
My phone was working normally and had %20 battery left. I went outside and didn't have extra battery or charger so I've used my friend's USB cable and lapto to charge it. After it reached to 44% I unplugged it and saw touchscreen issues started. I've searched and remembered some advices from XDA like discharging and charging may solve it so I gave it a try but it didn't help. Then tried over-discharging and charging but stock here.
What do you mean by charge it manually?

Utking said:
wtf? did you shortcut the battery or the phone? if shortcut the battery it my be blown. Anywyas you could try jump charging it, unplug and plug it in fast, or put it in a outlet which has a switch and try toggling it on and off for some minutes, you may be able to jump it up to the voltage it needs to start charge
Click to expand...
Click to collapse
I did short circuit the battery I know sounds crazy but I'm sick of touchscreen issues. Are you saying that I may try connecting it an appropriate charger's output directly like + > + , - > - ?

I'm saying, chances are, it's wrecked. You shouldn't really discharge batteries by short-circuit - that puts massive stresses on the structure of the cells in the battery and probably completely ruins it.
It can also cause excessive heat, which can lead to nasty things happening.
Recharging the battery by connecting + to + and - to - is theoretically possible, however, to do this SAFELY, you would need to know the manufacturer's recommended charge rate, times, voltages etc. They differ greatly.
Do it too slowly, and you just result in a very inefficient trickle-charge, which can sometimes do more harm than good....
Do it too fast - cells in the battery become gaseous, the gas vents, and you have fiery explosions... also not good.
Seriously - I would strongly recommend against playing with it. If you want to see what CAN happen when it goes wrong, YouTube it!!

http://www.youtube.com/watch?v=z3o_2mwRPdw
Insane amounts of energy stored in these batteries

niddnet said:
I'm saying, chances are, it's wrecked. You shouldn't really discharge batteries by short-circuit - that puts massive stresses on the structure of the cells in the battery and probably completely ruins it.
It can also cause excessive heat, which can lead to nasty things happening.
Recharging the battery by connecting + to + and - to - is theoretically possible, however, to do this SAFELY, you would need to know the manufacturer's recommended charge rate, times, voltages etc. They differ greatly.
Do it too slowly, and you just result in a very inefficient trickle-charge, which can sometimes do more harm than good....
Do it too fast - cells in the battery become gaseous, the gas vents, and you have fiery explosions... also not good.
Seriously - I would strongly recommend against playing with it. If you want to see what CAN happen when it goes wrong, YouTube it!!
Click to expand...
Click to collapse
Yesterday I connected the battery which is stock 3.7 V to the my digital camera's charger which is 4.25 V, 0.25 A, 50-60 Hz with cables for 6 hours but didn't work. BTW, stock charger is 5V, 1 A and 50-60 Hz.
Can I try jump charge with this camera's charger? If I can, how fast should I connect and disconnect the cable?

That's exactly what I'm talking about.
It should be noted that the Sensation stock battery is LiIon, rather than LiPo, but the effects can be very similar, and just as disasterous if that happens when your battery is in the vicinity of.... anything!!!

I think it's dead mate =/ but just switch it on and off a couple of times in a second

Utking said:
I think it's dead mate =/ but just switch it on and off a couple of times in a second
Click to expand...
Click to collapse
Couple of times in a second? I'm not a Flash man Or Shelden Cooper
Just tried but didn't work.

Short circuited battery? Hopefully it wasn't in the phone. Battery is dead, get Anker.

tinky1 said:
Short circuited battery? Hopefully it wasn't in the phone. Battery is dead, get Anker.
Click to expand...
Click to collapse
Already ordered stock battery. When Anker is available to Europe I will order it too.

Figure_desire said:
Already ordered stock battery. When Anker is available to Europe I will order it too.
Click to expand...
Click to collapse
Then buy the chichitek one, it's awesome and lasts just as long as the anker, if not longer, and they ship to europe! i got two chichitek batteries+ charger for 25$ usd inc shipping to norway

Shield battery charging issue?

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.
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
no worries lol i tend to get spaced out at times and go into details does not hurt to enlighten people :good:

disable fast charging

I use USB tethering every single day, and to get the maximum speed, I have my P40 Pro connected to the USB-C plug on my PC. However, this makes the P40 Pro FAST CHARGE as if its life depends on it.
This is horrible for the battery life, is there any way to disable fast charging?

Use a cable wich doesn't suport fast charging.

Shymmy said:
Use a cable wich doesn't suport fast charging.
Click to expand...
Click to collapse
won't that also lower the data speed?

lolan11628 said:
won't that also lower the data speed?
Click to expand...
Click to collapse
It shouldn't. Test it.
If you don't take the battery below 40% or above 80% when charging, fast charging should not impact battery longevity much.
The former stresses the battery a lot.
Li's love frequent midrange charging... it can extent battery life by hundreds even thousands of charge cycles.
High cell voltage and excessive temperature are Li's biggest enemies.
Try to avoid cold charging >82°F start temperature, avoid charging an Li below 72F and never charge one that's near or below freezing temperatures! Li plating can occur when charging at low temperatures, it will permanently degrade the battery if it occurs.
Charging is a electrochemical reaction that requires heat to function properly.
Never charge if above 100F though as this is near the top end cutoff for charging. Cool the phone with air and/or a damp microfiber cloth in hot ambient temperatures (>95F) when charging or using.

blackhawk said:
It shouldn't. Test it.
If you don't take the battery below 40% or above 80% when charging, fast charging should not impact battery longevity much.
The former stresses the battery a lot.
Li's love frequent midrange charging... it can extent battery life by hundreds even thousands of charge cycles.
High cell voltage and excessive temperature are Li's biggest enemies.
Try to avoid cold charging >82°F start temperature, avoid charging an Li below 72F and never charge one that's near or below freezing temperatures! Li plating can occur when charging at low temperatures, it will permanently degrade the battery if it occurs.
Charging is a electrochemical reaction that requires heat to function properly.
Never charge if above 100F though as this is near the top end cutoff for charging. Cool the phone with air and/or a damp microfiber cloth in hot ambient temperatures (>95F) when charging or using.
Click to expand...
Click to collapse
Well, the issue is that I use my phone for USB tethering every single day, and Huawei doesn't include any setting to limit the capacity to stop charging at for example 80%
My Samsung tablet for example has this setting natively.... Huawei for some reason refuses to add this.

lolan11628 said:
Well, the issue is that I use my phone for USB tethering every single day, and Huawei doesn't include any setting to limit the capacity to stop charging at for example 80%
My Samsung tablet for example has this setting natively.... Huawei for some reason refuses to add this.
Click to expand...
Click to collapse
My Note 10+ doesn't either
Always doing it the hard way like a bad gf
That's one way to boost OEM battery sales...

Hey, but P40 pro has the smart charging mode ... don't you have it activated ??

Shymmy said:
Hey, but P40 pro has the smart charging mode ... don't you have it activated ??
Click to expand...
Click to collapse
I have, but that doesn't actually disable fast charging, nor does it actually stop charging before the battery is completely full. It only in theory does some things when 'it' guesses is appropriate, so it's useless. I haven't really noticed anything.

I looked at the phone exactly when it displayed the message that the phone stopped charging at 80% and that it will be resumed at a certain time (I don't know exactly, about 3 hours).

I have a question on how to slow charge Pixel 4a

Since you already know that Pixel 4a supports 18W charging through USB C-C using USB-PD. Is it possible to charge the device a bit more slowly to keep the battery cool and possibly increase its life span?
A simple Google search showed that by using USB A-C cable, it won't be doing USB-PD quick charging instead it will charge using USB-BC (Battery Charging, a legacy standard) which will limit the power at around 7W.
By attaching USB-C end of the quick switch adapter(OTG) that came with the device to power adapter and connecting its other end (USB-A) to the device itself by running a USB A-C cable in between. Will this make the device charge slowly? Can anyone test this?

To find out for sure how much current is being used to charge your phone, you should install an app like this:
Ampere - Apps on Google Play
Measure the charging and discharging current of your battery.
play.google.com

JohnC said:
To find out for sure how much current is being used to charge your phone, you should install an app like this:
Ampere - Apps on Google Play
Measure the charging and discharging current of your battery.
play.google.com
Click to expand...
Click to collapse
question is on how to slow charge the device

Well, just get a 1amp charger or use a non-quick charge cable.
The problem is that you won't know if an amazon description for a cable is accurate or not.
So, the way to make sure it is charging slow, is to use the app I mentioned.

I charge my pixel 4a with a 350 mah charger (it is an old Motorola charger in micro usb, i just put à micro usb to usb c little gizmo).
It is around 1,5 w and charge my pixel 4a in around 10 hours , if the pixel is completly empty. You can also use a 5w charger with a usb a usb c câble, it will be faster but warmer

Any brick or cable that doesn't support that protocol or can't supply enough amps will cause the power controller to default to slow charging.
Most fast charging capable phones also have a software option to disable fast charging regardless of the brick/cable's rating.
The real trick is getting it to fast charge when you want it to

My goal was to charge my pixel 4a during the night with the slowest method to keep my battery as Healthy as possible. The 350mah just give me that. ( i keep my phone four to five years so i Try to take care of my battery)

lop1 said:
My goal was to charge my pixel 4a during the night with the slowest method to keep my battery as Healthy as possible. The 350mah just give me that. ( i keep my phone four to five years so i Try to take care of my battery)
Click to expand...
Click to collapse
Don't let it drop below 40% or charge beyond 72% in that case.
At some point it's just easier to replace the battery though

blackhawk said:
Don't let it drop below 40% or charge beyond 72% in that case.
At some point it's just easier to replace the battery though
Click to expand...
Click to collapse
This seems more an urban legend this 40 72%, the charging processor take care of that For you.

lop1 said:
This seems more an urban legend this 40 72%, the charging processor take care of that For you.
Click to expand...
Click to collapse
Li's prefer midrange usage with frequent partial charges. Cuts down the heat and the high cell voltage that degrades them faster. Degrades them only a fraction of a full charge cycle. Longer lifespan and less time charging for the same amount of mAh. Win-win.
Even today many confuse their requirements with NiCads Thinking they should fully charge/discharge them. Trying to convince some them otherwise is like talking an alcoholic out of drinking booze. "I've always done it that way..."

@blackhawk
but if someone who follows this 40-80 rule, how to reset battery stats?
Can it be done using ADB command?

ashutoshmn said:
@blackhawk
but if someone who follows this 40-80 rule, how to reset battery stats?
Can it be done using ADB command?
Click to expand...
Click to collapse
I really don't use those stats at all. More Google hype that never proved all that useful for me.
I use Galaxy Labs Battery Tracker, the history log* of Accubattery as well as karma Firewall logs to track usage.
Occasionally you may want to do a calibration too as the % accuracy will drift over time.
*as long as my usage stays at >10%@ hour SOT, I'm not very concerned

blackhawk said:
I really don't use those stats at all. More Google hype that never proved all that useful for me.
I use Galaxy Labs Battery Tracker, the history log* of Accubattery as well as karma Firewall logs to track usage.
Occasionally you may want to do a calibration too as the % accuracy will drift over time.
*as long as my usage stays at >10%@ hour SOT, I'm not very concerned
Click to expand...
Click to collapse
and by calibration, do you mean drain to 0 and charge to 100 every once in a while?

ashutoshmn said:
and by calibration, do you mean drain to 0 and charge to 100 every once in a while?
Click to expand...
Click to collapse
Yeah, which I don't like doing. If falls way out of calibration you'll think you're at 20% when in fact you're at 7% for example.
Many say to repeat the calibration cycle 2 or 3 times for it to take.
If the battery has failed this can be a dangerous procedure. How do I know? Just had a battery failure but because of the case didn't see the back cover bulging. All the while I was happily torturing the bad cell for over a month begging it to do its worse
I was fortunate it didn't damage the display of my Note 10+ or worse.
If you encounter erratic fast charging, reduced battery capacity always suspect a battery failure and look for the telltale back cover bulge. These bag Li's can fail at any time especially as they get older.

BTW, people who are reading this, you can charge your 4a at 7.5W (5V*1.5A) using OTG adapter plugged into the charger and a USB A-C cable. The temp. increase of battery is way less than full fast charge of 18W.

ashutoshmn said:
BTW, people who are reading this, you can charge your 4a at 7.5W (5V*1.5A) using OTG adapter plugged into the charger and a USB A-C cable. The temp. increase of battery is way less than full fast charge of 18W.
Click to expand...
Click to collapse
Also bare in mind that even when slow charging you never want the Li cell temp below 72°F, but 82F is a better bottom threshold temperature.
Li plating* can result from cold or hot (>100F) charging regardless of charging rate.
NEVER EVER attempt to charge an Li in near freezing temperatures*
*this can lead to a thermal runaway event

blackhawk said:
Also bare in mind that even when slow charging you never want the Li cell temp below 72°F, but 82F is a better bottom threshold temperature.
Li plating* can result from cold or hot (>100F) charging regardless of charging rate.
NEVER EVER attempt to charge an Li in near freezing temperatures*
*this can lead to a thermal runaway event
Click to expand...
Click to collapse
Billions of Li devices in service around the globe. If this was a 'thing' manufactures would prevent charging at low temps. Not debating the wisdom or detremental effects on longevity of charging at low/high temps. No need to season the spew with faux drama.

DB126 said:
Billions of Li devices in service around the globe. If this was a 'thing' manufactures would prevent charging at low temps. Not debating the wisdom or detremental effects on longevity of charging at low/high temps. No need to season the spew with faux drama.
Click to expand...
Click to collapse
Do what you want... and you're own research*.
You offer zero good advice and a half mass flame attempt.
Lead me, follow me or get the hell out of my way.
*https://www.sciencedirect.com/scien...of the internal,also affect the battery power.
Temperatures I suggested are for optimum performance/longevity with minimum chance of Li plating from multiple sources. They are very conservative.
I just had a battery failure on my Note 10+ that started by slow charging it to 100% at about 45-50°F. Boom, just like that. Took over a month to realize what had happened but that's what started the whole mess. I was fortunate the swollen battery didn't damage my display.

Oy vey - self-designated expert in a box with a short fuse. Happy Mother's day, champ.

DB126 said:
Oy vey - self-designated expert in a box with a short fuse. Happy Mother's day, champ.
Click to expand...
Click to collapse
WYSIWYU... call it like I see it.
Mum's been dead for decades.
Hope your's is not... spend some time with her.
You only get one.