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I was curious about car chargers and I heard back in the day that if you use a car charger its actually bad for the battery because the power from the car isn't a constant "flow" is that true? Second question is it bad if you leave your Fuze/Touch Pro plugged charging for over 8 hours a day because im at work Mon-Fri and I just leave it plugged in so I was just curious if it will lessen the life of the battery..? Sorry if its dumb questions just curious
I personally use car charger as my main charger.
i used it also for the Herald and TyTnII... and i didn't feel any battery problem.
however you should pay attention for the charger brand/make.
i advise to have the original HTC one.
sguerra923 said:
... that if you use a car charger its actually bad for the battery because the power from the car isn't a constant "flow" is that true?
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during the start of the engine, the voltage level may drop and the charger may stop charging, but during the time you drive, there's no problem.
The generator produces about 100 A, so the 500 mA or 1 A current of your changer do not matter
So what if you charge you phone for long periods of time even though battery is fully charged? Any neg effects?
sguerra923 said:
So what if you charge you phone for long periods of time even though battery is fully charged? Any neg effects?
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It's not good for any battery to do that, but usually you go into trickle mode, which protects the battery (I don't know if the charger or the phone controls that). Over-charging batteries is one of the things that kills them. You can tell on your phone when it's in trickle mode, because the LED around the scroll wheel stops blinking (well, I think that's the notification for trickle mode-could be wrong).
Farmer Ted said:
It's not good for any battery to do that, but usually you go into trickle mode, which protects the battery (I don't know if the charger or the phone controls that).
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The phone. Otherwise you couldn't charge via USB
I think the "don't charge in your car or you'll damage your battery or phone" is mostly an urban legend. Yes if you buy a crappy USB cig adapter that doesn't provide stable 5v then good luck. That said, even cheap adapters should be able to provide a good 5v source. 5v regulators have been around for ages. I bought them by the dozen 20 years ago when I was a teenager starting to play around with electronics. Even back then, they were less than a buck each if bought in bulk. So stable 5v supplies are not hard to come by. Voltage dips during startup isn't much of a problem either since regulators (even modern switching ones) only requires 10-20% headroom to operate which means as long as you are seeing 6-7v at the cig adapter, you're good. Your car wouldn't even start if it dipped that low. More likely an issue is the voltage spike that might occur right after the engine starts and the alternator kicks in. Most decent regulators will handle those as well. Chances are, you'll blow your adapter before anything damaging goes to your phone.
Recharging batteries requires a "fixed" current source. Modern rechargeable batteries (Li-Ion, Ni-Mh, etc) have charging profiles for optimal charges. That just means they need different currents at different stages of their charge cycle. It became clear pretty quickly that it was better to build the charging circuit into each device which did the best job for the battery it was designed for. That's been the case since the early mid 90s I think. What this means is that pretty much all devices built to be rechargeable (whether the battery is replaceable or not) only requires a simple consistent voltage source. This is why we have the "Universal" chargers today and why they are so cheap. I would still not pay $20 for one though. I'll spend 10 to get the generic brand which is just as good without the brandname on the package. The funny thing is, most of these power supplies come from just a handful of overseas manufacturers so you might be getting exactly the same thing. The only one's I'd avoid are those really cheap ones like the like the ones you might see on ebay. Most of them are actually good but some less reputable sellers might have gotten reject stock form somewhere and is selling them. These units are rejected because they didn't meet voltage/current specs and the person that was supposed to throw them out sells a huge box of them to someone for $50 or some such.
sguerra923 said:
Second question is it bad if you leave your Fuze/Touch Pro plugged charging for over 8 hours a day because im at work Mon-Fri and I just leave it plugged in.
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Li-On batteries dont really have a problem with charging them from any state to full, no memory really. However if you have a full charge and leave it plugged in you can burn them out in which case they do not retain that charge for very long. It will over periods of time shorten the life of the battery. It usually wont happen on the first go (depending on how long after full you leave it charging.)
Safest way to keep your battery happy is not to let it drain to complete empty and to take it off the charger when its done.
Interesting info guys.. so it looks like on the safe side that im not going to leave it plugged in for long hours..
sguerra923 said:
Interesting info guys.. so it looks like on the safe side that im not going to leave it plugged in for long hours..
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most modern battery chemistry has a life of around 1000 recharge cycles. It doesn't matter if they are full charges or half charges so even though there isn't a classic memory affect, it does nibble away at the recharge cycles. To put it another way, a given battery loses 1/1000 of it's capacity every time it's charged to full charge. Not really memory but just steady degration. All charging circuits today either stops charging or does trickle charge once full. BTW, trickle is a term that applies mainly to pb and NiCad betteries.. today's batteries actually use a form pulse charging for maintenance. Now this protects the battery from overcharging but if you leave it plugged in, the charging circuit will basically go into this mode of letting the battery drain a bit and then charging it. This will eat away at a batteries life. A real world example... my wife and I had near identical laptops ant one point. She left hers plugged in most of the time whereas I drained my battery each time before recharging. When her battery started lasting only 10mins on a "full" charge, mine was still at about 1.5hrs. It took her battery only a year to fail where mine didn't go dead (i.e. below 1hr per charge) until over 18months.
My advice is don't leave it plugged in but once it's about 20-30% of full it's ok to recharge. Hell, if you think about, 1000 recharges will last almost 3 years of daily charging. So what if it only lasted 2. Any of us would likely be on to the next phone or be willing to buy a second battery.
When I exchanged my Fuze for a new one at AT&T, the service person said my battery was bad, due to overcharging.(Battery had a slight bulge). She said leaving my Fuze plugged into my car charger and my computer(with charging turned on) degraded the battery. Phone was about 7 months old.
There is an option to NOT charge the battery when connected by USB to the computer.(kind of indicates no automatic charging control)
Well, I use my Fuze as a computer 12-14 hours a day. I want to see the screen, which means I need it plugged in either to the computer or car charger.
If I turn off recharging when connected to my computer, I end up with a dead battery pretty quickly, since I use it a lot as my business phone with a Bluetooth speakerphone.
The AT&T person said this information was given to them by HTC.
bigger capacity battery or get another device(netbook) that can sustain the 'abuse'?
bigger capacity battery won't solve it
Without it being plugged in, the screen turns off. Even a large battery wouldn't last with the screen on all the time, if even you could figure out how to make it stay on.
I had to plug in the earphone dongle and plug the car charger in to that, to get the screen to stay on in my car. Plugging the car charger directly into the phone, the screen would turn off no matter what I tried.
I guess I need to replace the battery every 8-12 months.
Yikes, there's so much misinformation about batteries in this thread, it's frightening.
so point us to better info
All I know was that my battery was bulging a bit after 7 months of use, and it was holding a charge less and less.
And I reported what AT&T told me..
hrothnir said:
All I know was that my battery was bulging a bit after 7 months of use, and it was holding a charge less and less.
And I reported what AT&T told me..
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I'm not saying your battery isn't broken, and I'm not saying your charger (part of the phone nowdays) didn't go haywire and break it. I AM saying, however, that leaving the phone plugged in didn't do it (unless, of course, your charging hardware was faulty, in which case you're screwed anyway).
Lithium-Ion batteries don't get overcharged, because they tend to explode. That's generally considered a no-no for batteries, especially in consumer devices, so the charging hardware is designed to stop charging when the battery is full. An occasional "topping charge" is applied (by some chargers) because of the self-discharge of the cells. I kinda doubt that our phones do that, though, because it's only something like 1h of topping charge once every 20 days.
Let me repeat this again for absolute clarity: lithium-ion chargers STOP CHARGING when the battery is full. Leave it plugged in as long as you want, and (assuming the charging hardware isn't broken) it'll be fine.
So you're saying what AT&T told me was bullsh**t
Not that I believe what AT&T says or the given reasons, which didn't make sense from a technical standpoint.
But then you wonder why there is an option in the Fuze to NOT CHARGE the phone when connected to a computer using USB.
And I did see the bulge, and AT&T did replace the battery under warranty.
But then you wonder why there is an option in the Fuze to NOT CHARGE the phone when connected to a computer using USB.
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Perhaps that option is available so when your laptop is not plugged into AC power, you can connect your phone without worrying about draining the laptop battery.
laptop
Seriously doubt that option was designed for laptops.
The phone would take very little from a laptop battery.
And would probably be labeled for laptop use.
I think that the phone drops a few % in power, then recharges, and does that constantly while plugged into a computer, causing the battery to waste the 800-1000 recharge cycles that it has.
Be nice if you could set the phone to not recharge when connected to a computer unless the power dropped 25% --or make it configurable.
Manually turning the charging off/on is impracticable.
Maybe a program can/has been written to cycle the charging off/on properly.
please help because my charger is rated @ 0.1A which means 100mA only? (wth) I googled and found out that 700mA is the oem batt charger for xperia x1 some use 1A others 1.5A please help thanks. Cause I'm buying a new charger rated at 1A so it would charge faster
Yes, the higher the mA the more juice can be drawn from it.
Many people think that it means it will only put out that current, but current is drawn not pushed, and an electrical device will draw as much as it needs.
With a NiMH type rechargable battery, there's a simple formula to work out the charging time.
C is the capacity of the battery.
1.4C/mA
So a 1000mAH NiMH battery charged at 1000mA would take 1.4 hours to charge.
However, Lithium batteries are not simple to charge without blowing them up, hence the need for a charging circuit.
The charging circuit should take only as much current as it needs to charge the battery safely, so a 2A charger would probably be overkill although it would most likely enable you to run TomTom, Opera, and watch a movie while charging in the quickest possible time
If you're charging while using the device heavily (GPS/Wifi/3G browsing) then 1A charger would be better, but if you normally just leave the phone charging without using it then 600mA normally does the job.
i think 2A charger would kill the battery. Can you suggest a 1A charger OEM htc for my xperia x1? thanks
henryfranz2005 said:
i think 2A charger would kill the battery. Can you suggest a 1A charger OEM htc for my xperia x1? thanks
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You've fallen for what I mentioned in my second sentance.
A 2A power supply does not only provide 2A, it provides anything up to 2A.
So if your phone only draws 1A, it will only provide 1A.
The phone is the charger, the thing we think of as the charger is actually just a power supply.
Unless someone has the spec sheets for the charging circuit in the phone, we don't know the maximum rate at which it will charge the battery.
One way to find out would be to discharge the battery to a level where the phone won't turn on, then without turning the phone on, set it charging.
Time how long it takes for the LED to turn green.
Divide 1230 by the time in hours that it took and you've got roughly the current drawn to charge it.
Say it takes 90 minutes with a 1A power supply, so that's a maximum charge rate of 800mA, so even if you connected it up to a 5A power supply, it will still only charge at 800mA.
So, you connect it up to your 1A power supply, that means with the phone on you've got a "spare" 200mA to play with.
If the phone isn't using more than 200mA to just "run" itself, then you'll charge a battery in the 90 minutes.
However, say you start your sat nav app, it draws 400mA (guess), the charging circuit drops to use only 600mA, taking longer to charge but allowing you to find where you're driving too.
While you're navigating to a restaurant, you want to phone ahead to confirm the reservation, so you open up Opera and search google with a 3G connection, that takes another 400mA (guess). The charging circuit now only has 200mA to use. Your battery isn't getting much charge.
Imagine using a 600mA power supply instead and you can see how you could get to the situation where despite being plugged in, your battery is running down.
I've used 400mA to demonstrate the impact, of course they real values are lower, otherwise you'd only get an hour's use out of having GPS and 3G enabled. Hmm, then again...
thanks for helping me here I decided that I would buy a new charger. (1A) because my charger is not drawing enough amperes (my charger is rated at 0.1A believe me. I thought I read the specs wrong. But it takes roughly 18 hrs to fully charge my battery.
I input my battery specs here http://www.csgnetwork.com/batterychgcalc.html
and yeah I think the computation is correct. Thanks SIR XACCERS
xaccers said:
You've fallen for what I mentioned in my second sentance.
A 2A power supply does not only provide 2A, it provides anything up to 2A.
So if your phone only draws 1A, it will only provide 1A.
The phone is the charger, the thing we think of as the charger is actually just a power supply.
Unless someone has the spec sheets for the charging circuit in the phone, we don't know the maximum rate at which it will charge the battery.
One way to find out would be to discharge the battery to a level where the phone won't turn on, then without turning the phone on, set it charging.
Time how long it takes for the LED to turn green.
Divide 1230 by the time in hours that it took and you've got roughly the current drawn to charge it.
Say it takes 90 minutes with a 1A power supply, so that's a maximum charge rate of 800mA, so even if you connected it up to a 5A power supply, it will still only charge at 800mA.
So, you connect it up to your 1A power supply, that means with the phone on you've got a "spare" 200mA to play with.
If the phone isn't using more than 200mA to just "run" itself, then you'll charge a battery in the 90 minutes.
However, say you start your sat nav app, it draws 400mA (guess), the charging circuit drops to use only 600mA, taking longer to charge but allowing you to find where you're driving too.
While you're navigating to a restaurant, you want to phone ahead to confirm the reservation, so you open up Opera and search google with a 3G connection, that takes another 400mA (guess). The charging circuit now only has 200mA to use. Your battery isn't getting much charge.
Imagine using a 600mA power supply instead and you can see how you could get to the situation where despite being plugged in, your battery is running down.
I've used 400mA to demonstrate the impact, of course they real values are lower, otherwise you'd only get an hour's use out of having GPS and 3G enabled. Hmm, then again...
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you're correct sir. It would take 90MINUTES to charge my phone using 1A
you're so cool sir
henryfranz2005 said:
you're correct sir. It would take 90MINUTES to charge my phone using 1A
you're so cool sir
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Happy to have enlightened
Just wish I could have been more helpful in suggesting which to buy.
Just be careful in using a charger with high Amp rating. I have 2 chargers- 1 charges my phone in more or less an hour, the other in almost half a day (so I don't use it).
One time, my battery got drained, so no problem, I plugged it in to charge. To my horror, it wasn't charging (no blinking light). sometimes I get a blinking red light, and the power button emits a red light. So I wasn't all that bothered, I thought it might need some more time to charge, so I left it alone. But the day was fast ending, without anything happening, and I needed my phone the next day for work. So I went to have it checked, the tech said it was a battery problem, so I just bought a replacement battery.
After 2 days, the same thing happened. Not charging, Red light blinking and annoying me to death. I went and had the battery replaced again.
A few days passed, so far so good, nothing happened. I just made sure that I don't let my battery drain and charge it as soon as it falls below half.
One night, I attended a party and wasn't paying too much attention to my phone. You can guess what happened, the battery went dead. I couldn't find my (fast-charging) charger, so I used the other one while I looked for it- still wasn't charging.
I couldn't find it, so I got ready to go have the battery replaced again. But then it blinked. I thought my mind might be playing tricks with me. It blinked again. (actually it wasn't blinking, it was kind of like that slow color-changing when you open the phone). I pressed the power button. It's alive!
This happened several times already, so to make the long story short. It's the charger's fault. Now, its the charger with the low amphere rating that I bring with me, even if it does charge slowly. I only use the other one, when I'm pressed for time.
Sorry for the long post. Just wanted to share my story.
Sounds like it's the fault of the battery monitor in the phone letting the voltage of the battery drop too low damaging the cell.
A low current charge can often bring such a damaged cell back to life, where as a full current charge is likely to expose the damage and kill off the battery.
There are several things which damage lithium cells.
Heat is one of them, which is why if you're using a laptop that allows it, it's better to run off the mains where possible with the battery out. Of course this isn't always practical and if someone knocks the power lead off goes your laptop. With our phone's it's not an option. Charging also produces heat, the higher the current the hotter it gets, so short top-up charges are better than long charges.
Discharging them too low damages them. The phone should prevent this by stopping you being able to power on the phone if the voltage is too low, however it could be misreading the voltage. Sometimes they can be revived if the voltage hasn't dropped too far below the minimum, with a low current charge, but the damage would have been done so the battery wouldn't last as long as an undamaged one treated the same way and of the same age.
Time. It's a killer. From the moment of manufacture the battery's internal contacts start losing efficiency, giving the result of lower capacity over time. Heat increases this. There's nothing you can really do about it, just remember there's no point buying a spare battery to use in the future when your original one finally stops holding enough charge, by then the spare would have degraded too, so buy replacement batteries when you need them, not before.
xaccers said:
You've fallen for what I mentioned in my second sentance.
A 2A power supply does not only provide 2A, it provides anything up to 2A.
So if your phone only draws 1A, it will only provide 1A.
The phone is the charger, the thing we think of as the charger is actually just a power supply.
Unless someone has the spec sheets for the charging circuit in the phone, we don't know the maximum rate at which it will charge the battery.
One way to find out would be to discharge the battery to a level where the phone won't turn on, then without turning the phone on, set it charging.
Time how long it takes for the LED to turn green.
Divide 1230 by the time in hours that it took and you've got roughly the current drawn to charge it.
Say it takes 90 minutes with a 1A power supply, so that's a maximum charge rate of 800mA, so even if you connected it up to a 5A power supply, it will still only charge at 800mA.
So, you connect it up to your 1A power supply, that means with the phone on you've got a "spare" 200mA to play with.
If the phone isn't using more than 200mA to just "run" itself, then you'll charge a battery in the 90 minutes.
However, say you start your sat nav app, it draws 400mA (guess), the charging circuit drops to use only 600mA, taking longer to charge but allowing you to find where you're driving too.
While you're navigating to a restaurant, you want to phone ahead to confirm the reservation, so you open up Opera and search google with a 3G connection, that takes another 400mA (guess). The charging circuit now only has 200mA to use. Your battery isn't getting much charge.
Imagine using a 600mA power supply instead and you can see how you could get to the situation where despite being plugged in, your battery is running down.
I've used 400mA to demonstrate the impact, of course they real values are lower, otherwise you'd only get an hour's use out of having GPS and 3G enabled. Hmm, then again...
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Spot on! you really hit it...look at it againas in this analogy, you have a 2mm diameter water pipe and being fed from a 10mm diameter pipe, you cant get into the 2mm more than it could take. and reversing the scenerio, inference could be drawn!
bR
Hey guys,
I was looking for some clarification on this topic.
So I heard on a youtube video (can't remember which, for the life of me, I just know it was an S8 video) that Wireless Charging has a better impact on battery in the long run.
They had stated that the battery would continue to hold a better charge over time, where as, if you used wired charging, the amount of charge the battery can hold over time would be much less to when you first got it.
Now I do know that battery gets worse over time, however, I have never heard anything about how wireless charging can increase the longitivtiy of the battery.
Maybe someone on here might have more information on this?
I will try to find that youtube video but if this is the case, then I will definitely need to get a wireless charger.
Regards
Unless this youtuber tested 2 phones for a year, charging one with a cable and another with wireless charging i wouldn't listen to what they're saying.
peachpuff said:
Unless this youtuber tested 2 phones for a year, charging one with a cable and another with wireless charging i wouldn't listen to what they're saying.
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Yeah I agree. A believe a charge cycle is the same regardless of how it is being charged.
Would never think wired charging puts more stress on battery life.
I think though that with wireless charging once the phone is fully charged the pad cuts out so it won't over charge
With a wired connection when the phone is charged its still consistently trying to charge which can end up damage battering the long term
craigels said:
I think though that with wireless charging once the phone is fully charged the pad cuts out so it won't over charge
With a wired connection when the phone is charged its still consistently trying to charge which can end up damage battering the long term
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This is also what I have been wondering. If this is true then I may get a nice wireless pad for charging overnight (maybe the new official samsung "convertible" one but its damn expensive). I would have thought that the phone itself knows when a battery is charged and stops drawing the current from the cable though, so it would make no difference either way if that is true (but perhaps its not?).
But I did hear the exact opposite to op, that wireless charging was worse for the batteries, possibly due to the heat generated. But I don't know how true that is.
True
It's better for the battery because it charges it more slowly than a direct wired connection. There is no more heat buildup than using a wired charger, in fact likely less since the charging rate is lower.
As for the other comment that a wired charger doesn't shut off but keeps charging once the battery is full is patently false. The charging circuits whether wired or wireless are quite intelligent and gradually ramp down the charging current as the battery approaches capacity, ultimately delivering just enough current to keep the phone running. In a closed system the energy has to go somewhere and if the charger didn't do this you'd have 18W of power being dissipated as heat and a serious problem on your hands.
craigdamey said:
It's better for the battery because it charges it more slowly than a direct wired connection. There is no more heat buildup than using a wired charger, in fact likely less since the charging rate is lower.
As for the other comment that a wired charger doesn't shut off but keeps charging once the battery is full is patently false. The charging circuits whether wired or wireless are quite intelligent and gradually ramp down the charging current as the battery approaches capacity, ultimately delivering just enough current to keep the phone running. In a closed system the energy has to go somewhere and if the charger didn't do this you'd have 18W of power being dissipated as heat and a serious problem on your hands.
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For wireless I believe the heat generated is more, it is about the method of delivering the power, not the speed. The induction used to transfer power wirelessly is obviously going to be far less efficient and will generate more heat to get even a slower transfer rate then getting the power straight down a cable (but if someone knows otherwise then feel free to correct me). But then I guess the slower charging rate might also put less stress on the battery which is probably good.
For the wired, what you are basically saying is that leaving a phone plugged in to a wired charger will not harm it since the current will have been reduced in the same way a car battery charger might reduce it to a "maintenance" mode once it is fully charged. So people are believing the old myths that you can overcharge a phone, which would seem to be impossible (although I do wonder why they keep slapping up notifications saying things like "FULLY CHARGED! UNPLUG CABLE!" as if leaving it plugged in would in some way damage it!).
Just saw this which explains the overcharging possibility (or lack of)
http://www.androidauthority.com/leave-phone-plugged-overnight-703078/
ewokuk said:
For wireless I believe the heat generated is more, it is about the method of delivering the power, not the speed. [/url]
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The coils themselves don't generate a significant amount of heat, it's the battery itself that causes the phone to get hot. Slower charging means less heat, which is better for your battery so wireless charging will increase your battery life. As the article notes it is also best to keep your phone above 40% charge, partly because fast chargers slow down significantly after 50% to save the battery. That initial burst from 0-50% is done to save you from a dying battery but it takes its toll.
Also note that the S8/S8+ have new battery technology that provides much improved battery life. They're saying 5% loss of capacity after two years compared to 20% for previous generations.
As a bonus not continuously plugging/unplugging a cable from your USB port will make that last longer too. I hardly ever plug my S7 Edge into a physical cable, and I know quite a few people who have killed their USB ports and can no longer charge and or transfer data from them.
craigdamey said:
The coils themselves don't generate a significant amount of heat, it's the battery itself that causes the phone to get hot. Slower charging means less heat, which is better for your battery so wireless charging will increase your battery life. As the article notes it is also best to keep your phone above 40% charge, partly because fast chargers slow down significantly after 50% to save the battery. That initial burst from 0-50% is done to save you from a dying battery but it takes its toll.
Also note that the S8/S8+ have new battery technology that provides much improved battery life. They're saying 5% loss of capacity after two years compared to 20% for previous generations.
As a bonus not continuously plugging/unplugging a cable from your USB port will make that last longer too. I hardly ever plug my S7 Edge into a physical cable, and I know quite a few people who have killed their USB ports and can no longer charge and or transfer data from them.
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Yeah I am torn at the moment between using cable and getting a wireless charger. I like my stuff charged asap but that's partly because i never leave it plugged in overnight and want it charged before bed (which I now know is not a problem anyway) and partly because i want to be able to unplug it to use it if i get a message or email, which isn't an issue with wireless as I can just pick it up and put it back on there after. I assume taking it off the charging pad and putting it back on will not have any detrimental effects to the battery. I am just trying to weigh up the pros and cons of each. All things considered I am leaning towards wireless, particularly if it isn't worse for the battery (although lets face it the difference in degradation between wireless and wired, is going to be so small it's probably not even noticeable after a couple of years by which time I would have a new phone anyway). I wonder if there is a better wireless charger which will be more future proof than the new convertible samsung one (in case I ditch samsung in future) and still give max speed, I would like one that is tilted so I can see the screen though.
My s5 is 3 years old and has only ever been charged by the massive double width "micro USB" cable which takes some force to get in and out of the socket. Still works perfectly though. Never had any usb port of any kind on any device fail, no idea what these other people are doing to kill them!
ewokuk said:
Yeah I am torn at the moment between using cable and getting a wireless charger.
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Having the dock by my bed is very convenient. Just place it on at night and pick it up during the morning. If I need to grab it for anything I can without getting tangled up in wires and it even sits at the right angle so that the always on display becomes my nightstand clock/alarm clock. Once you've gone wireless you won't go back.
craigdamey said:
Having the dock by my bed is very convenient. Just place it on at night and pick it up during the morning. If I need to grab it for anything I can without getting tangled up in wires and it even sits at the right angle so that the always on display becomes my nightstand clock/alarm clock. Once you've gone wireless you won't go back.
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I always turn my phone off at night anyway so I don't get disturbed by some spam message or something (I know I can probably set it up to be silent at certain times, but then why leave it on at all, using the battery for nothing). £70 for that Samsung charger though!! I know there are much cheaper ones but I am not sure they will charge at the same rate, the new samsung one charges faster than any previous wireless charger AFAIK and I would want one where the phone can sit up, and most are just flat. Hmmmm although the do have it for £50 on amazon sold by "fonejoy", still steep though.
This one looks good https://www.amazon.co.uk/CHOETECH-W...=UTF8&qid=1492192247&sr=1-9&keywords=choetech but not sure if itll charge at the same speed as the new samsung one and doesnt use a USB-C connector which probably rules it out. May as well just get the samsung one.
I use the US version of this and it works fine. https://www.amazon.co.uk/d/Mobile-P...d=1492192742&sr=1-5&keywords=rav+power+qc+2.0. The Fast Charging Dock comes with a cable so that should be all you need.
And yes, I have my Do Not Disturb settings to suppress notifications 10:30PM to 6:30AM. Wife complained she couldn't sleep with all that noise going on
craigdamey said:
I use the US version of this and it works fine. https://www.amazon.co.uk/d/Mobile-P...d=1492192742&sr=1-5&keywords=rav+power+qc+2.0. The Fast Charging Dock comes with a cable so that should be all you need.
And yes, I have my Do Not Disturb settings to suppress notifications 10:30PM to 6:30AM. Wife complained she couldn't sleep with all that noise going on
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Thats a wall charger? I'm talking about the charging pad itself. I believe the new Samsung one outputs 15w so is faster than any previous ones which are all 10w I think.
ewokuk said:
Thats a wall charger? I'm talking about the charging pad itself. I believe the new Samsung one outputs 15w so is faster than any previous ones which are all 10w I think.
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There are only two types of charging dock, standard and fast-charge. None of them output 15W to the phone. The expensive Samsung is just a fancy fast-charge dock so it will charge at the same rate as the Seneo and others that support fast-charge. The Samsung fast-charge adapter only provides a maximum output power of 15W (9V @ 1.67A) so it would require 100% transfer efficiency to charge the phone at that power, and in reality it's only about 65% so at most you'll see 10W versus standard Qi charging at around 7W.
All of the Seneo chargers I have coupled with RavPower or Samsung Fast-Charge adapters charge at the same rate (10W to begin with tapering off to 7W above 50% charge).
craigdamey said:
There are only two types of charging dock, standard and fast-charge. None of them output 15W to the phone. The expensive Samsung is just a fancy fast-charge dock so it will charge at the same rate as the Seneo and others that support fast-charge. The Samsung fast-charge adapter only provides a maximum output power of 15W (9V @ 1.67A) so it would require 100% transfer efficiency to charge the phone at that power, and in reality it's only about 65% so at most you'll see 10W versus standard Qi charging at around 7W.
All of the Seneo chargers I have coupled with RavPower or Samsung Fast-Charge adapters charge at the same rate (10W to begin with tapering off to 7W above 50% charge).
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Ahh ok, I will have to check out a few seneo pads.
If your using fast charging AKA Adaptive charging it shouldn't matter either way. The Fast charging port on the phone, and the wireless charging should go through the phone and the phone should automatically stop all charging going to the battery. This is the reason why if you were to leave your fast charger on all night whether it be Wireless or wired, you can pick your phone up at 99% or 98% instead of 100%. The phone stopped charging, then when it drops to a certain % it starts to charge up again.
As far as which is actually best for strain, it shouldnt matter because afaik to the battery its the all the same. Wireless charging just has some coils almost that send the charge wirelessly, but it still goes to the same place.
This is what I have read from google, so I am no expert on the subject, but it seemed pretty legit, and makes sense to me, a person with a Tech background. If anyone knows better please be my guest.
I'm going with wireless charging pads at home but a magnetic cable for in the car.
Not found a good car holder that has the wireless pad built in so I will stick with my ibolt for a bit longer
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There is no correct answer to this question. Battery life is function of many things -
1. Every battery has specified charge cycle. One full charge from min to max is 1 cycle. Two full charge from mid to max is also 1 cycle. So the more you use your device, charge cycles will come to an end more quickly. For example if you use two similar spec phones; first one you use heavily requiring full cycle charge everyday vs second which you use less and requires full charge every alternate day (or to phrase in other way, first is almost completely discharged by evening, second is half discharged). So the theory goes that second phone battery will last double the time than first.
2. Every battery articles you read, you will find recommendation to charge battery in specified current or usually slow charging. Today's battery technology should be immune to this but I still turn fast charging off. It is likely that not all the batteries are immune.
3. Heat is bad for battery. Some wireless chargers heat up. The TYLT VU that I use get uncomfortably warm when I place phone vertically (possibly coils do not align and multiple of them gets activated). Heat build up is there during fast charging too. If you play CPU intensive games and charge at the same time, phone gets warm. All this heat is working negative to the life span of battery.
4. Lithium ion batteries have less chemical stress when they are not fully charged or fully discharged. If you research you will find articles telling one to keep battery between 40% to 90%. Hence I usually do not charge to 100% and if I do, I watch or play games to bring battery level down. Search for best charge level to store lithium ion batteries, I think it is from 45% to 50%. This I guess keeps batteries at the least chemical stress state. So do your maths if you are type who likes to keep battery at 100% charge at all the times.
As you can see there is no straight answer to this question. Battery life is function of all these factors.
Added: I didn't read full article but you can check this link which speaks about impact of heat and leaving battery to full charge state.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Thanks for everyones input on this!
By the way, not sure if it has been mentioned, but this is a pretty cool read:
http://www.androidpolice.com/2017/0...ill-degrade-less-quickly-than-the-galaxy-s7s/
So looks like the S8 won't deteriorate as much over time!
I got the OEM samsung convertible fast charging pad but it doesn't come with a wall plug as I read somewhere (I guess thats just us in the UK getting screwed over yet again). The manual says "Use only Samsung-approved chargers that support fast charging (9v/1.67A, 9v/2A, 12v/2.1A).". So I need a wall plug that will be able to provide the fastest charging speeds from it (which I am guessing is one that does 12v/2.1A??). I dont think all the standard plugs with 2.4a sockets are going to do it right? The "30w" RAVpower one that craigdamey linked says it can do 12v/2A but only for QC3.0 (which I obviously wont get since its just being plugged straight into the charging pad), otherwise its 5v/2.4a. Not sure what one to get now. Theres an Anker 24w one but that says 2.4a per port (I know little about electrics and how these things work!).
Topic! I know cables can wear out the port. Never had a wireless.
Hmm... Personally I think wireless charger have a potential to do so... It does heat a lot (especially if you're wearing a case or loving in a quite hot place as I do)..
Cable charger is able to wear ports, but I don't think it is that notable.. My 1.5 year old S8 always use a cable charging, and I often put on OTG and DeX system.. But, until now, the port still holds out very well..
tdoto said:
Topic! I know cables can wear out the port. Never had a wireless.
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Wherever you charge,just have a small desktop fan to keep things cool,whether you charge wirelessly or not.
I place my phone on a stand or the QI Charger stand & direct the fan right at it.
I'm not a battery stat nerd,but,I'm guessing overall charging speeds will increase as well if you use a fan to keep the temperatures down while charging......
Wireless charging itself won't hurt the battery. Heat & frequent 100% & <20% charging cycles will hurt it more. Download AccuBattery from the play store and monitor your charging temperature. Depending on your environment, If it's below 40C while charging(mine is ~36C), it should be OK.
The way I do it is NOT charging it overnight, and top it up during the day between 40-80% using wireless charing stand. AccuBattery also has the alert feature when it charges till 80%, that's when I take it off the charging stand.
If you plan to upgrade in a year or so, don't worry about any of those as modern battery/charging circuit will take care of itself in such a short time. It shouldn't affect the battery life.
Oh yeah let's talk about this stuff. This is my bread and butter
Long story short. Yes it has the potential to cause issues. It's not so much the temperature but the fact it is being bombarded by 110-200ish khz. Is it something that a typical user will notice? No you are talking leaving your phone in a wireless charger for years at time. To that's why when you look at some quality chargers under the coil they have some shielding. Phones have this to. I haven't looked into the note 9 internally but I'm guessing the components that would be sensitive to that are shielded.
You should not need to worry about it. Leave it on for 12 hours a day. Heck I bet it could take a few years of 24/7 on one without an issue.
Temps. Most battery's can handle discharge at a temp of 60c for 30 min just fine. The max I think is around 75c where a thermal fuse blowes and the battery is gone. I haven't looked into the note 9's battery but I'm guessing it's close. So 60c is fine. Ideally you would wanna keep it around 45c but 60c won't hurt it. I have taken battery's to around 60c and never noticed any impact in performance. Just don't do this every day. 45c-50c is the max I would say that would not have an impact on it. I'll spare you from the chemical changes that occurs when they are exposed to high temps for long periods of time.
Electronics. 60c is nothing. Remember everything soldered in your phone gets heated to at least 150c for 3 min. The components may say they have a max op temp fo say 70c but that's specs for the hundreds of thousands of hours they spec the part for. People seem to think hitting a high temp is the end for some components when they have already been exposed to temps almost 3 times higher.
Wireless charging is fine. You don't need to worry about it.
I have a Samsung wireless charging dock(upright) and when placing my phone, usually position it with a bit of space between the phone and charge so that air would flow between them, which aids in keeping it cool while charging.
shinew said:
Wireless charging itself won't hurt the battery. Heat & frequent 100% & <20% charging cycles will hurt it more. Download AccuBattery from the play store and monitor your charging temperature. Depending on your environment, If it's below 40C while charging(mine is ~36C), it should be OK.
The way I do it is NOT charging it overnight, and top it up during the day between 40-80% using wireless charing stand. AccuBattery also has the alert feature when it charges till 80%, that's when I take it off the charging stand.
If you plan to upgrade in a year or so, don't worry about any of those as modern battery/charging circuit will take care of itself in such a short time. It shouldn't affect the battery life.
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Exactly what he says ^^
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Good info. Does the quality of the charger matter? Even qi certified ones range from $8-$40. How about standard vs quick charge?
Hello!
It's been a while since I don't have an Android device (Iphone user lately) and I'm buying this beauty these days.
I have two questions: First, right now the 45w charger is out of stock so should I buy the 25W instead just until I find the best one (expend money).
Two: How shall we charge this device? All night? Just 2 hous like Iphone? Please help me out on this.
25W vs 45W is really just a matter of the time it takes to charge the phone. And right now, available evidence suggests that its not worth it. As for how to charge it? All night is fine, as the phone will stop charging the battery when it is fully charged.
does the phone will stop charging the battery when it is fully charged?
Deiota77 said:
does the phone will stop charging the battery when it is fully charged?
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Yes, that is always the case.
I would recommend buying a 45W (or higher) USB PD PPS power supply. That will work on Samsung devices. But keep in mind: it has to support PPS to allow voltages between something like 5V, 9V, 15V etc. If it is only USB PD, it will only charge at 15W.
I have the Anker Nano II 65W that has PPS, but there is also a 45W version. But that is just one option, there are plenty of other products out there that support 45W USB PD PPS
Deiota77 said:
does the phone will stop charging the battery when it is fully charged?
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LAtest equipment come with a battery health function it basically charges fast up to 80% and then slowly charges the remaining 20% to extend battery life. Once at 100% it won't charge at the same level, reducint the current/voltage.
I really don’t want to damage the battery like it happened with my iPhone (1 year and 89%).
That’s why I’m asking!
Please post your own experiences.
Deiota77 said:
I really don’t want to damage the battery like it happened with my iPhone (1 year and 89%).
That’s why I’m asking!
Please post your own experiences.
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The worst thing for mobile phone batteries is heat. So running the display all the time and gaming are probably the things to avoid. Which unfortunately...Is what most phones are being designed for these days. So don't let the phone get hot, and try to keep the charge level under 80% if you want the battery to really last. But batteries WILL degrade. There is no way around that. The best you can do is try to limit the damage.
Deiota77 said:
I really don’t want to damage the battery like it happened with my iPhone (1 year and 89%).
That’s why I’m asking!
Please post your own experiences.
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Two things kill the battery: heat and high/low voltages
In an ideal world, the Li-ion battery is at around 20°C and stays at around 3.8V.
Use the slowest possible charger whenever you can (5W e. g.)
Avoid fast charging as often as possible
Don't charge past 80% and don't let it drop below 20%
Don't let your phone stay at 100% for too long. Nothing will happen but the high voltage will degrade the battery (like if you leave your device plugged in every night).
In theory you shouldn't charge your device when it's hot and so on but I mean if you live in Spain for example and it is summer. What else are you going to do? So avoiding charging the ambient temperature is too high, is something you can't really do. (Yeah, in Spain most homes to have AC but you get the point )
I have taken care of my OnePlus 7T Pro's battery since I have received it 2 years ago. According to OnePlus Diagnostic it started at around 97% health (new device) and is now at 93%. I almost never charge above 80% and have a Tasker routine to only let it stay at 60% over night and charge to 80% right before my alarm rings. I use ACC (Advanced Charging Controller) for that. But it requires Magisk.
That might be a bit extreme but I have only lost 4% after 2 years and countless battery cycles. Keep in mind that every now and then you should go from 0% to 100% to let the system calibrate the battery so that it accurately reports its charge. This is the only reason why you should do this so that the system knows how much capacity the battery has. And if you mostly stay between 20–80% all the time, it might think that 80% is its max charge and start misreporting the percentage.
Thanks for all that great tips. I think I won't ever buy an extra fast power charger, I'll use a normal one...
is it safe to use 25 watt charger of s 21 TA-800 for charging s22 ultra?
osamaelgabry said:
is it safe to use 25 watt charger of s 21 TA-800 for charging s22 ultra?
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yes, enable fast charging and limit to 85%