Poor battery life - Samsung Galaxy Note 10+ Questions & Answers

Hello!
So I had my Samsung Galaxy Note 10+ taken in to the device repair shop in my town because of the battery not lasting long at all. They did testing and said that the wireless charging coil FPC had cold solder joints. I'm not sure what that means exactly but I had replaced the wireless charging coil and the phone is still dying at random times and at random phone percentage life.
I attached a copy of what the device repair shop had said about the issue with my phone.

stephsmith69 said:
Hello!
So I had my Samsung Galaxy Note 10+ taken in to the device repair shop in my town because of the battery not lasting long at all. They did testing and said that the wireless charging coil FPC had cold solder joints. I'm not sure what that means exactly but I had replaced the wireless charging coil and the phone is still dying at random times and at random phone percentage life.
I attached a copy of what the device repair shop had said about the issue with my phone.
Click to expand...
Click to collapse
Was it ever exposed to water? Any drops without a good case protecting it?
Does wired charging work?
Otherwise possible battery failure. Probably should've had the battery replaced when it was apart.
Loose or damaged ribbon cable or connector.
Worse case a mobo failure.

stephsmith69 started a thread called Poor battery life. There may be more posts after this.
Today 12:39 AM
not sure why I got this notification.

stephsmith69 said:
Hello!
So I had my Samsung Galaxy Note 10+ taken in to the device repair shop in my town because of the battery not lasting long at all. They did testing and said that the wireless charging coil FPC had cold solder joints. I'm not sure what that means exactly but I had replaced the wireless charging coil and the phone is still dying at random times and at random phone percentage life.
I attached a copy of what the device repair shop had said about the issue with my phone.
Click to expand...
Click to collapse
'Cold solder' is normally a reference to broken, cracked or just over all a bad solder joint. This would cause a bad, week (high resistance, low voltage) or no connection of the circuit.
If the battery was not charging properly, as blackhawk mentioned, the batter could now be bad.
Was the repair shop able to test the battery?
I am not a Sammy guy but, from what I understand they are a bit heavy on battery monitoring.
Maybe just give it a few charging cycles to see if the battery life improves.
Out of curiosity, what battery percentage is shown when the device turns off?
Cheers.

ipdev said:
'Cold solder' is normally a reference to broken, cracked or just over all a bad solder joint. This would cause a bad, week (high resistance, low voltage) or no connection of the circuit.
If the battery was not charging properly, as blackhawk mentioned, the batter could now be bad.
Was the repair shop able to test the battery?
I am not a Sammy guy but, from what I understand they are a bit heavy on battery monitoring.
Maybe just give it a few charging cycles to see if the battery life improves.
Out of curiosity, what battery percentage is shown when the device turns off?
Cheers.
Click to expand...
Click to collapse
It may be the battery, I'm not sure. The guy at the device shop said it doesn't charge normal and had a .6 amp draw when he hooked it up to his deal. And no, no water damage or any other damage.
And my phone dies at random phone percentages. It could die at 85%, 70%, 50% I mean any percentage, and I don't even know when it's going to die when it does! But then when I put it on the charger, after about 5 minutes it'll already be at 50% charged.
I just want to be able to fix this myself instead of sending it in and paying an outrageous amount haha
I appreciate ya'lls help!

stephsmith69 said:
It may be the battery, I'm not sure. The guy at the device shop said it doesn't charge normal and had a .6 amp draw when he hooked it up to his deal. And no, no water damage or any other damage.
And my phone dies at random phone percentages. It could die at 85%, 70%, 50% I mean any percentage, and I don't even know when it's going to die when it does! But then when I put it on the charger, after about 5 minutes it'll already be at 50% charged.
I just want to be able to fix this myself instead of sending it in and paying an outrageous amount haha
I appreciate ya'lls help!
Click to expand...
Click to collapse
Replace the battery, especially if it's over 2 yo.
Start there.

Let's stay on topic, folks. If you have questions about how XDA works or how to enable/disable certain features, ask them in the About XDA-Developers section.
Thanks

Related

Battery @ 0 = doom?

Sorry if this subject has been beat to death, but i'm new to the EVO. Actually the fone belongs to a good friend of mine. She was told that if her battery gets so low that the fone shut's down, she'll need to bring it to a store for them to get it restarted. This seams wrong. I know with my Droid1, D2, And DInc1, all will power up as soon as they're plug'd in.
Both my friend and i are rather intelligent, and if a sales rep at Sprint can reboot it, so can we. (after all, her is the only fone i mentioned not rooted)
What i'm looking for is:
1. Does this condition really exhist?
2. If so, how do I! reboot it?
Sometimes the Evo's battery will drop so low that it won't charge - it happens fairly often. You'll need to take the battery to a Sprint store so they can boost the battery.
An external wall charger should charge it too. It isn't a given that the battery won't charge after dying completely, it's just a possibility. I have never had it happen to me, but people start threads about it all the time thinking their phone is bricked.
(from... Evo/MIUI/Tapatalk)
I have never heard of this happening and have never had it happen to me. Did a quick search and you may want to have a look at this thread HERE to see if you can find some answers.
plainjane said:
Sometimes the Evo's battery will drop so low that it won't charge - it happens fairly often. You'll need to take the battery to a Sprint store so they can boost the battery.
An external wall charger should charge it too. It isn't a given that the battery won't charge after dying completely, it's just a possibility. I have never had it happen to me, but people start threads about it all the time thinking their phone is bricked.
(from... Evo/MIUI/Tapatalk)
Click to expand...
Click to collapse
Exactly what Jane said is correct. It will get so low sometimes that it will need to be "boosted". I have a battery right now that my wife let get so low I can't do anything with it so I just gave her my spare.
It's a known bug look here
Lokifish Marz said:
It's a known bug look here
Click to expand...
Click to collapse
No it isn't. Its the protection circuit in the battery. In an undervolt (as in an overvolt) condition the charging circuit shuts down.
As was mentioned earlier, a wall charger can sometimes push the voltage high enough to "revive" the battery. I believe it depends on the battery.
en.wikipedia.org/wiki/Lithium-ion_battery#Safety_requirements
CyWhitfield said:
No it isn't. Its the protection circuit in the battery. In an undervolt (as in an overvolt) condition the charging circuit shuts down.
As was mentioned earlier, a wall charger can sometimes push the voltage high enough to "revive" the battery. I believe it depends on the battery.
en.wikipedia.org/wiki/Lithium-ion_battery#Safety_requirements
Click to expand...
Click to collapse
Exactly. Or if you're like me, an aggressive under volter, when you let the battery hit 0 and it auto shuts down, once plugged in, the charging like blinks for a about a minute before it stays solid, which is normal.
CyWhitfield said:
No it isn't. Its the protection circuit in the battery. In an undervolt (as in an overvolt) condition the charging circuit shuts down.
As was mentioned earlier, a wall charger can sometimes push the voltage high enough to "revive" the battery. I believe it depends on the battery.
en.wikipedia.org/wiki/Lithium-ion_battery#Safety_requirements
Click to expand...
Click to collapse
I'm sorry I can't link to the secured site bug list for the Evo however I service 10-20 Evo's a week where the owner has let the battery die to the point where the phone won't power or charge the battery. Pull the battery and drop it in a HTC Hero/Touch Pro 2 or external charger and it will charge but simply will not charge in an Evo. This does not affect all Evo's. I'll say again, this is a known bug.
I'm feeling pretty doomed too! I ordered two batteries plus a wall charger from ebay and have been charging it but it = ZERO! Plus I tried to charge the stock battery with the cable, and it still never charged! I thought it was the cord, but when I plug it into the pc, the usb de-bug still comes on. Earlier, I was on the phone with my bf, and dead it went when it was at 81% charged and I was on the phone for no more than 15 minutes. WTF IS WRONG WITH MY PHONE!? Rooted.

Battery life: frequent micro charges vs more spaced charges

What is best in terms of battery longevity?
1 - Wait until battery level fall below a certain level (and which % is ideal to start charging)
or
2- Charge the battery as frequently soon as possible
Thanks for any advice
Lithium batteries last longer if you do not disharge them all the way..
I don't have reference material handy. If you really want some, I will try and find some again..
But basically charge the battery whenever you can or at least do not let it go below say 20 or 25 percent if you are concerned about that. Since our devices have a replaceable battery I do not stress out over it too much. If I cut 6 months off the battery and it only lasts me a year or so, I can always just put in a new one, they are not that expensive..
Now on a device without a replaceable battery is where you really have to be concerned..
Drain till 20% then recharge it. Best way to use lithium battery.
kyokeun1234 said:
Drain till 20% then recharge it. Best way to use lithium battery.
Click to expand...
Click to collapse
Thank you gentlement for your advice. So far, I connect the USB cable each time I sit at the desk. Even if battery is 9x% full. I will stop doing this now.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
says it's best to keep the battery charged. best to keep the battery levels at 40-90%
ceejay83 said:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
says it's best to keep the battery charged. best to keep the battery levels at 40-90%
Click to expand...
Click to collapse
Huh, I heard it was around 20%~80%...
kyokeun1234 said:
Huh, I heard it was around 20%~80%...
Click to expand...
Click to collapse
yea could be, just don't discharge or overcharge the battery :good:
i haven't looked into it lately. but i'm pretty sure our phones don't discharge the battery till it's technically at 0% (~3V)
i'll run my phone down tonight and check it with a mutlimeter to verify...
i wouldn't be surprised to find out the phone stops charging the battery before it's at a true 100% either. so i guess i'll check that too.
crazy talk said:
i wouldn't be surprised to find out the phone stops charging the battery before it's at a true 100% either. so i guess i'll check that too.
Click to expand...
Click to collapse
I was also puzzled by the warning of overcharging issue. I read somewhere that the GalNexus has an electronic which prevents overcharging. I am very interested by your verification if that is true. Because frankly, it would be very inconvenient to wake in the middle of every night to disconnect the charger.
2LoT said:
I was also puzzled by the warning of overcharging issue. I read somewhere that the GalNexus has an electronic which prevents overcharging. I am very interested by your verification if that is true. Because frankly, it would be very inconvenient to wake in the middle of every night to disconnect the charger.
Click to expand...
Click to collapse
there are wall chargers that have timers on them, they shut off power after a custom time
You can't overcharge a phone by leaving it plugged in all night, the charging circuit only allows it to charge to a certain point. You can overcharge a phone by plugging it in everytime it hits 90% because you're being all OCD about it. Over time that will screw up your battery
The main thing you want to avoid is heat, which will seriously degrade the life of the battery. I only charge my phone once a day(before I go to bed). I've been doing this since I got my first Android device(well, my Nexus S had to be charged like 3 times a day :| ) and have never run into any premature battery failures.
speedyink said:
You can't overcharge a phone by leaving it plugged in all night, the charging circuit only allows it to charge to a certain point. You can overcharge a phone by plugging it in everytime it hits 90% because you're being all OCD about it. Over time that will screw up your battery
Click to expand...
Click to collapse
Oh that's what overcharging mean? Ok thanks.
speedyink said:
You can't overcharge a phone by leaving it plugged in all night, the charging circuit only allows it to charge to a certain point. You can overcharge a phone by plugging it in everytime it hits 90% because you're being all OCD about it. Over time that will screw up your battery
Click to expand...
Click to collapse
Quite the opposite is true, regarding the second part of your reply, actually.
Sent from my Galaxy Nexus using Tapatalk 2
Actually, it's never a bad time to charge a lithium battery because the charge you are using is always the oldest added. Consider it as a bucket with golf balls and a hole at the bottom. You load golf balls from the top and use them one at a time from the hole on the bottom.
All lithium batteries have circuitry built into them to prevent overcharging but at the same time the circuitry needs power to operate. If you drain your battery down to nothing and leave it uncharged for a long time the circuitry will drain the reserve and you will not be able to charge it at all.
Another fact about lithium batteries is that you can charge them more times than their natural life span. So as soon as a battery is manufactured it starts to go bad just sitting on a shelf. So buy them fresh. They have thousands of charge cycles and only about 2-3 years life. So even if you charge all cells inside 2-3 times daily (remember the bucket analogy) that's only about 1,000 charges in a year.
Also, you could plug your phone in and out 100 times during one day and still not complete one full charge cycle.
Conclusion ; charge it whenever you can, whenever you want. You'll need a new battery in about 2-3 years anyway in which time you'll most likely get a new phone.
Thanks obsanity. Oh wow, this is indeed even better. Thank you very much for the technical background explanation.
So as soon as a battery is manufactured it starts to go bad just sitting on a shelf.
Click to expand...
Click to collapse
Are those the cheap batteries you find on eBay, the kind of $20 for 3 batteries?
2LoT said:
Thanks obsanity. Oh wow, this is indeed even better. Thank you very much for the technical background explanation.
Are those the cheap batteries you find on eBay, the kind of $20 for 3 batteries?
Click to expand...
Click to collapse
the cheap ebay batteries use a cheap/inferior chemistry. they may be capable of the same Mah as stock for example when new, but i wouldn't count on it to age as well compared to OEM.
obsanity said:
Actually, it's never a bad time to charge a lithium battery because the charge you are using is always the oldest added. Consider it as a bucket with golf balls and a hole at the bottom. You load golf balls from the top and use them one at a time from the hole on the bottom.
All lithium batteries have circuitry built into them to prevent overcharging but at the same time the circuitry needs power to operate. If you drain your battery down to nothing and leave it uncharged for a long time the circuitry will drain the reserve and you will not be able to charge it at all.
Another fact about lithium batteries is that you can charge them more times than their natural life span. So as soon as a battery is manufactured it starts to go bad just sitting on a shelf. So buy them fresh. They have thousands of charge cycles and only about 2-3 years life. So even if you charge all cells inside 2-3 times daily (remember the bucket analogy) that's only about 1,000 charges in a year.
Also, you could plug your phone in and out 100 times during one day and still not complete one full charge cycle.
Conclusion ; charge it whenever you can, whenever you want. You'll need a new battery in about 2-3 years anyway in which time you'll most likely get a new phone.
Click to expand...
Click to collapse
Thanks for the clarification!
2LoT said:
Are those the cheap batteries you find on eBay, the kind of $20 for 3 batteries?
Click to expand...
Click to collapse
I would say they are not only old but also fake claims of capacity. It's actually hard to measure how much a battery can hold so they take advantage of it. Who's going to prove them wrong?
system shutdown occurs on the Galaxy Nexus at 3.39 volts (assumed, measured voltage with no load is 3.42)
in theory you could get a bit better battery life at the cost of cell longevity by running it down to 3.2 volts. assuming the system could continue to function.
EDIT: full system charge is 4.2 volts, as expected. i don't see a practical benefit to modifying the system to run at below 3.4 volts, even if possible.

Help Fixing Water Damaged HTC One V...

Please,anyone help me fixing my HTC One V. It was accidentally dropped in water,I turned off it immediately and removed the water as much as possible then I kept it in rice for 2 days.It is charging very slowly and it only turns on after plugging it to the charging socket.It takes 11-12 hours to charge to 60% and drains out in 3-4 minutes only. Please help me fix it.
hrushi2711 said:
Please,anyone help me fixing my HTC One V. It was accidentally dropped in water,I turned off it immediately and removed the water as much as possible then I kept it in rice for 2 days.It is charging very slowly and it only turns on after plugging it to the charging socket.It takes 11-12 hours to charge to 60% and drains out in 3-4 minutes only. Please help me fix it.
Click to expand...
Click to collapse
Looks like something is draining your battery or your battery is broken. Open the phone and look for damaged components...
jonas2790 said:
Looks like something is draining your battery or your battery is broken. Open the phone and look for damaged components...
Click to expand...
Click to collapse
Thanks for the suggestion,Can the battery change will do the work ? I have taken it to the Service Center they said that they will have to look it if it's charging socket problem,and if it is then being its socket mounted on motherboard directly they will have to change the motherboard of phone and it will cost me a fortune to do that.
hrushi2711 said:
Thanks for the suggestion,Can the battery change will do the work ? I have taken it to the Service Center they said that they will have to look it if it's charging socket problem,and if it is then being its socket mounted on motherboard directly they will have to change the motherboard of phone and it will cost me a fortune to do that.
Click to expand...
Click to collapse
I don't think the problem is the battery, it's more likely some short circuit with the charging port, yes.
There are some replacement part stores for hov, I just found a charging connector: http://www.parts4repair.com/htc-one-v-dock-port-charging-connector/
When you look at the pics of the connector it seems to be soldered onto the mainboard, but it shouldn't be that difficult...
But,the phone charges with the original connector,I think it's battery problem,Is there any alternate way to keep it charged? I'm gonna check it but I am unable to open one phillip screw as it's threads are damaged.How am I going to open the damaged screw?Please anyone help...
hrushi2711 said:
But,the phone charges with the original connector,I think it's battery problem,Is there any alternate way to keep it charged? I'm gonna check it but I am unable to open one phillip screw as it's threads are damaged.How am I going to open the damaged screw?Please anyone help...
Click to expand...
Click to collapse
I opened the screw and phone now the battery looks fine ,Is there any way to check the battery like with voltmeter?
hrushi2711 said:
I opened the screw and phone now the battery looks fine ,Is there any way to check the battery like with voltmeter?
Click to expand...
Click to collapse
If you already opened your phone, use hair dryer and lightly dry up your phone. Do the process for 3-4 times for about 2 minutes each.
You can check your battery with a multimeter, just follow below steps:
1.Switch off your cell phone and carefully remove the battery.
2.Now search on the label of the battery for its given voltage. Most batteries of cell phones are 3.7V
3.Place the battery such that its terminals face you.
4.Now keep the multimeter (either analog or digital) on DC Volt setting.It may be indicated with either DCV or just V and a straight line with 3 dots below it. In DCV (DC Voltage) also, there will be many settings like 2mV, 2V, 20V, 200V, 1000V. Keep the setting on the number above the actual voltage of the battery. It will be either 10V or 20V in most multimeters. An indication of ACV or just V followed by a curved line means AC voltage. Do not use this setting as batteries run on DC voltage.
5.Now touch the tip of the red probe of the multimeter on the terminal of the battery named ‘+’(positive) and touch the tip of the black probe on the terminal named ‘-‘(negative).
6.Keep both the probes touched until you see a stable reading on the screen of the meter. If the reading on the screen is more than 3.70 for a battery of 3.7V, then the battery is fully charged. And if it is less, then you will have to charge it with a charger. It should show a reading above the charge of the battery. If the battery is drained and showing 0 voltage or say less than 3.7, you will have to charge. If after charging for a long time, still it is showing the same charge, then the battery is faulty. You will need to buy a new one as batteries are not repairable. If the reading of the battery is below 3.7V even after charging it, your mobile phone will not switch on.
If you find this helpful, there's a thumbs up button (thanks button) just click it
hitman-xda said:
If you already opened your phone, use hair dryer and lightly dry up your phone. Do the process for 3-4 times for about 2 minutes each.
You can check your battery with a multimeter, just follow below steps:
1.Switch off your cell phone and carefully remove the battery.
2.Now search on the label of the battery for its given voltage. Most batteries of cell phones are 3.7V
3.Place the battery such that its terminals face you.
4.Now keep the multimeter (either analog or digital) on DC Volt setting.It may be indicated with either DCV or just V and a straight line with 3 dots below it. In DCV (DC Voltage) also, there will be many settings like 2mV, 2V, 20V, 200V, 1000V. Keep the setting on the number above the actual voltage of the battery. It will be either 10V or 20V in most multimeters. An indication of ACV or just V followed by a curved line means AC voltage. Do not use this setting as batteries run on DC voltage.
5.Now touch the tip of the red probe of the multimeter on the terminal of the battery named ‘+’(positive) and touch the tip of the black probe on the terminal named ‘-‘(negative).
6.Keep both the probes touched until you see a stable reading on the screen of the meter. If the reading on the screen is more than 3.70 for a battery of 3.7V, then the battery is fully charged. And if it is less, then you will have to charge it with a charger. It should show a reading above the charge of the battery. If the battery is drained and showing 0 voltage or say less than 3.7, you will have to charge. If after charging for a long time, still it is showing the same charge, then the battery is faulty. You will need to buy a new one as batteries are not repairable. If the reading of the battery is below 3.7V even after charging it, your mobile phone will not switch on.
If you find this helpful, there's a thumbs up button (thanks button) just click it
Click to expand...
Click to collapse
Thanks for the details buddy,actually when the phone is switched OFF and plugged to charger it charges and the LED indicator glows to green means fully charged and as soon as the phone is switched ON with the charger connected to it it charges again & again .Meanwhile the phone switches ON only when charger plugged on to the socket,It doesn't wake up on Normal battery condition.I am really frustrated with Non-removable battery type of this mobile.
Well,Thanks everyone for replying.The problem is solved after changing the battery.Big relief cause service center told me it will cost too much in changing the battery or changing the motherboard and I repaired it with very low cost watching youtube videos and a big help with XDA forum.

Left my phone on charger

Hi guys.
I was tired and accidentaly slept over a day and left my phone on charger for like 2 hours.
It was probably holding on a charger at 100% for at least 30 min.
Now I know that is not healthy for battery,so I'm worried about this.
The phone will not allow the battery to go over voltage no matter how long it's plugged in.
Charging beyond 80% and especially 90% stresses the battery and reduces its lifespan.
When the battery's capacity drops to 80% it has reached its useful lifespan, replace it to reduce the chances of a failure.
A battery failure can severely damage the phone.
Any swelling (rear cover) is a battery failure!
Replace it that day if it fails, do not charge!!!
Erratic fast charging and especially a rapid decline in capacity are also indicators of a failure.
The battery is cheap, fairly easy to replace and not worth damaging the N10+ over!
Replace with a new OEM rear cover seal to preserve water resistance.
My first battery failed at 1.5 years, I was very fortunate it didn't damage the display. My N10+ is heavily used. I estimate the battery will last me 1-2 years tops.
Regardless I will now replace it yearly.
blackhawk said:
The phone will not allow the battery to go over voltage no matter how long it's plugged in.
Charging beyond 80% and especially 90% stresses the battery and reduces its lifespan.
When the battery's capacity drops to 80% it has reached its useful lifespan, replace it to reduce the chances of a failure.
A battery failure can severely damage the phone.
Any swelling (rear cover) is a battery failure!
Replace it that day if it fails, do not charge!!!
Erratic fast charging and especially a rapid decline in capacity are also indicators of a failure.
The battery is cheap, fairly easy to replace and not worth damaging the N10+ over!
Replace with a new OEM rear cover seal to preserve water resistance.
My first battery failed at 1.5 years, I was very fortunate it didn't damage the display. My N10+ is heavily used. I estimate the battery will last me 1-2 years tops.
Regardless I will now replace it yearly.
Click to expand...
Click to collapse
Who told you that battery on modern phones can damage is display?
The battery to blow up needs like 10 years of charging which in 99% you won't even reach because you will change the phone years back.
Give me one example where battery on modern phones like Samsung and Huawei damaged the display.
Besides I always charge the phone while it's off I know why.
paparazzo79 said:
Who told you that battery on modern phones can damage is display?
The battery to blow up needs like 10 years of charging which in 99% you won't even reach because you will change the phone years back.
Give me one example where battery on modern phones like Samsung and Huawei damaged the display.
Besides I always charge the phone while it's off I know why.
Click to expand...
Click to collapse
The battery is mounted directly on the back of the display with it's thousands of semiconductors. This type of battery typically has a lifespan of 200 full charge cycles before it degrades to 80% of its original capacity.
A degraded Li is much more likely to fail.
Lol, do want you want.
blackhawk said:
The battery is mounted directly on the back of the display with it's thousands of semiconductors. This type of battery typically has a lifespan of 200 full charge cycles before it degrades to 80% of its original capacity.
A degraded Li is much more likely to fail.
Lol, do want you want.
Click to expand...
Click to collapse
Yeah right.just like degraded on my 8 year old S7 edge..please cut this c..p.
paparazzo79 said:
Yeah right.just like degraded on my 8 year old S7 edge..please cut this c..p.
Click to expand...
Click to collapse
Your ignorance is not my problem.
Don't ask for help if all you want to do is act like a runt.
Really?
Oh no I left my phone on the charger overnight, the sky is falling
Problem solved, you're so on my ignore list.
blackhawk said:
Your ignorance is not my problem.
Don't ask for help if all you want to do is act like a runt.
Really?
Oh no I left my phone on the charger overnight, the sky is falling
Problem solved, you're so on my ignore list.
Click to expand...
Click to collapse
Who cares about you and battery blowing up the screen..
I asked Samsung technician about it and he told me:" in my career as a technician never saw that,are you joking me"?
So stop witj it.

Question Is it safe to leave the phone plugged in 24/7 with "protect battery" on, which limits max charge to 85%?

Is it safe to leave the phone plugged in 24/7 with "protect battery" on, which limits max charge to 85%?
Not a good idea. A power surge or near lightning strike could fry it. Rather pointless to leave it perpetually plugged in.
blackhawk said:
Not a good idea. A power surge or near lightning strike could fry it. Rather pointless to leave it perpetually plugged in.
Click to expand...
Click to collapse
I see. What about leaving it charging overnight while I sleep? Does it hurt the battery to have it plugged in while it is at 85% with "protected battery" on in the same way that it hurts to have it plugged in when it is at 100%?
A 40-72% charge is better; Li's love frequent midrange power cycling. 85% is ok but 80% or lower be better. Do what best suites your needs.
Batteries aren't a big deal to replace. I now replace my heavily used N10+ battery about every year now as a matter of routine maintenance.
However a battery failure is a big deal and seriously damage the phone. Any battery swelling (rear cover) is a battery failure, replace immediately.
blackhawk said:
A 40-72% charge is better; Li's love frequent midrange power cycling. 85% is ok but 80% or lower be better. Do what best suites your needs.
Batteries aren't a big deal to replace. I now replace my heavily used N10+ battery about every year now as a matter of routine maintenance.
However a battery failure is a big deal and seriously damage the phone. Any battery swelling (rear cover) is a battery failure, replace immediately.
Click to expand...
Click to collapse
I see. Too bad Samsung didn't choose 80% or make it selectable.
grayson73 said:
I see. Too bad Samsung didn't choose 80% or make it selectable.
Click to expand...
Click to collapse
Like I said it's not a big deal. I just fast charge for 10-20 minutes when convenient.
You could put on a timer switch if it really bugs and slow charge it.
Why such concern ? Been charging all my phones since 2012 all day long on, during daytime, none of them was affected. Battery still same, last like new. Many of them still in use by my family members.
Example, I behaved like this to phones for around 1,5 - 2 years, then I got new one. So not just tiny short period of time.
Ing.King said:
Why such concern ? Been charging all my phones since 2012 all day long on, during daytime, none of them was affected. Battery still same, last like new. Many of them still in use by my family members.
Example, I behaved like this to phones for around 1,5 - 2 years, then I got new one. So not just tiny short period of time.
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Oh really? That's good to know. I thought fast charging, charging to 100%, or leaving it plugged in at 100% would degrade the battery.
Never actually carried about this, lucky me maybe, wait for other oppinions or exp.
make sure that it doesn't heat up. rest of it not affect too much.
I always charged my smart phones whole night.
Never faced any problem.
sunyakram said:
I always charged my smart phones whole night.
Never faced any problem.
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Higher cell voltage degrades the Li faster.
They are rated by full charge cycles; discharge until shutdown to 100% charged is a cycle.
Most have a rated life of 200 or so cycles.
High storage/use temperatures also can effect it's service life greatly as can rapid discharge cycles.
In any event when a Li reaches 80% of its original capacity it is degraded and should be replaced before it fails (which could destroy the phone).
On my heavily used N10+ I get about a year to 1.5 years of usable service life per battery.
Just replace the battery once it's degraded and otherwise don't worry about it if so inclined. Don't expect a 3 year service life though if it's charge cycle is fully or near fully cycled daily.
Leaving the charger H24 is less unsafe with the 85% limit enabled but it is not totally safe.
After the first charge starting the discharge and automatically the recharge. The result is the use of more number of recharging and the batteries doesn’t support an infinite number of this.
This worse if you use fast recharge, when I have to leave in charge all the night I use an old 5V 500mA charger.
Lightning strike... poof.
My S21FE half ended life yesterday, finished call and then died. Always on charger while in office. Startup possible but after Samsung logo always restart then loop. After 7 loops stays off. Sent to provider for claim. Maybe it is not related to battery, but you never know. Charging not working, no reaction after plug of the charger, even while turned off.
Ing.King said:
My S21FE half ended life yesterday, finished call and then died. Always on charger while in office. Startup possible but after Samsung logo always restart then loop. After 7 loops stays off. Sent to provider for claim. Maybe it is not related to battery, but you never know. Charging not working, no reaction after plug of the charger, even while turned off.
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That sucks.
Hardware failure of some type. Bootup requires a lot of current so it maybe the battery.
Sounds more like a mobo failure...

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