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[Q] Charger Question

So, I've been wondering this for a while and thought I just ask. I've read about stories where people bought 3rd party chargers and had their phone malfunction. Because of this I have been worried about using any other type of charger and stick with the stock. Would it be fine to charge my Nexus 5 which a more powerful charger. For example the Nexus 7 charger? There's also a few other 3rd party chargers which seem to be much more powerful, but I was just worried that it would cause problems for the phone. Thanks in advance!

I've got a ton of Chargers laying around and they all work just fine. As long as the charger output is 5 volts you should be okay.
Sent from my Nexus 5 using Tapatalk

0dBu said:
I've got a ton of Chargers laying around and they all work just fine. As long as the charger output is 5 volts you should be okay.
Sent from my Nexus 5 using Tapatalk
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Exactly 5 volts? The Nexus 7 charger is 5.2

PsychDrummer said:
Exactly 5 volts? The Nexus 7 charger is 5.2
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It should probably be fine. I used my Mom's Nook charger at her house the other day with no issues.
Sent from my Nexus 5 using Tapatalk

0dBu said:
It should probably be fine. I used my Mom's Nook charger at her house the other day with no issues.
Sent from my Nexus 5 using Tapatalk
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http://www.amazon.com/Anker-Dual-Po...5839252&sr=8-1&keywords=anker+usb+car+charger
So this one is apparently 18V...says should work though. Weird.

PsychDrummer said:
http://www.amazon.com/Anker-Dual-Po...5839252&sr=8-1&keywords=anker+usb+car+charger
So this one is apparently 18V...says should work though. Weird.
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the charger that you linked to is 18 W (aka Watts), but it is still 5V. it has a max output of 3.6A (amp). Watts = Volts x Amps.
As long as it's 5V, you should be fine. using a charger with a higher max A rating won't change anything, how much current that is actually drawn (amps) depends on the device.

jss2 said:
the charger that you linked to is 18 W (aka Watts), but it is still 5V. it has a max output of 3.6A (amp). Watts = Volts x Amps.
As long as it's 5V, you should be fine. using a charger with a higher max A rating won't change anything, how much current that is actually drawn (amps) depends on the device.
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Oh I see. Thanks!

Okay, quick electrical lesson.
Volts: This one is relatively fixed at 5 for all "USB-Powered" devices. However, virtually all electrical devices have a 10% allowable variance. So... anything from 4.5V to 5.5V should work just fine, and be considered "safe." Of course, this can be tricky since some less-than-trustworthy manufacturers (*cough*China*cough*) will include the 10% variance in the specs. So... a charger rated for 5.5V charger may actually be running at 5.8V, which is within the 10% variance for a 5.5V device, and since 5.5V is within the variance for the 5V spec, they'll just double-down, and stamp it with 5V, which is bad. Confused? Yeah, me too. Just stay away from those cheap eBay chargers, to avoid such shenanigans.
Amps (aka Current): The thing to remember here is that the draw is king. What I mean here is that the device drawing power is what's important. If your device draws 1A, then it will ALWAYS draw 1A, no matter if it's plugged into a 1A, 5A, or 1000A charger. However, it will also attempt to draw 1A if it's plugged into a 0.2A charger, which would obviously be very bad (well, unless you're TRYING to start a fire). USB devices are designed to draw 0.5A, since that's what USB 2.0 (on a computer) provides. However, many devices can draw more if plugged into a wall charger. So... you're almost always safe plugging into a computer, but your wall charger needs to be rated AT LEAST what the device expects. That can be hard to determine, so the rule of thumb is that whatever Amperage charger the device came with is the MINIMUM amperage charger you should use. However, there is no maximum, since draw is king, so go nuts in the other direction.
Watts (aka Power): Power = Voltage x Current, so Watts is nothing more than Voltage times Amperage. Thus, a 5V charger charging at 2A is 10W (5x2=10). Now that you know this, you can ignore it. Nobody but the electric company cares how many Watts your wall charger is pushing. The only, and I mean only, thing this is good for is determining the Amperage if the manufacturer doesn't provide it. So... if the only spec listed for your micro-USB charger is 12W, then you can figure out the amperage by dividing that by 5 (since all USB devices are 5V). Your 12W charger, therefore, is pushing 2.2A. See the section on Amps, since that's what's really important.

jt3 said:
Okay, quick electrical lesson.
Volts: This one is relatively fixed at 5 for all "USB-Powered" devices. However, virtually all electrical devices have a 10% allowable variance. So... anything from 4.5V to 5.5V should work just fine, and be considered "safe." Of course, this can be tricky since some less-than-trustworthy manufacturers (*cough*China*cough*) will include the 10% variance in the specs. So... a charger rated for 5.5V charger may actually be running at 5.8V, which is within the 10% variance for a 5.5V device, and since 5.5V is within the variance for the 5V spec, they'll just double-down, and stamp it with 5V, which is bad. Confused? Yeah, me too. Just stay away from those cheap eBay chargers, to avoid such shenanigans.
Amps (aka Current): The thing to remember here is that the draw is king. What I mean here is that the device drawing power is what's important. If your device draws 1A, then it will ALWAYS draw 1A, no matter if it's plugged into a 1A, 5A, or 1000A charger. However, it will also attempt to draw 1A if it's plugged into a 0.2A charger, which would obviously be very bad (well, unless you're TRYING to start a fire). USB devices are designed to draw 0.5A, since that's what USB 2.0 (on a computer) provides. However, many devices can draw more if plugged into a wall charger. So... you're almost always safe plugging into a computer, but your wall charger needs to be rated AT LEAST what the device expects. That can be hard to determine, so the rule of thumb is that whatever Amperage charger the device came with is the MINIMUM amperage charger you should use. However, there is no maximum, since draw is king, so go nuts in the other direction.
Watts (aka Power): Power = Voltage x Current, so Watts is nothing more than Voltage times Amperage. Thus, a 5V charger charging at 2A is 10W (5x2=10). Now that you know this, you can ignore it. Nobody but the electric company cares how many Watts your wall charger is pushing. The only, and I mean only, thing this is good for is determining the Amperage if the manufacturer doesn't provide it. So... if the only spec listed for your micro-USB charger is 12W, then you can figure out the amperage by dividing that by 5 (since all USB devices are 5V). Your 12W charger, therefore, is pushing 2.2A. See the section on Amps, since that's what's really important.
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I've plugged my device into chargers before that have rated outputs of .5A-1A when the device "expects" more... so, why didn't it start a fire?

Nitemare3219 said:
I've plugged my device into chargers before that have rated outputs of .5A-1A when the device "expects" more... so, why didn't it start a fire?
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How much "more" are you talking about?

طوني تبولة said:
How much "more" are you talking about?
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The stock charger is 1.2A, correct? So given that much... a charger I have used a few times on my Nexus 4 and 5 at a friend's place only outputs .5A... so at least .7A from what our phones should be able to draw.

Nitemare3219 said:
The stock charger is 1.2A, correct? So given that much... a charger I have used a few times on my Nexus 4 and 5 at a friend's place only outputs .5A... so at least .7A from what our phones should be able to draw.
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An Android device knows that it's plugged into a wall charger, and thus can use more than 0.5A, only if the data pins are shorted together. Otherwise, it will assume it's plugged into a computer and only use 0.5A. Chargers made for android devices are usually so equipped. Apple chargers and some cheap-o chargers aren't. That's one reason why you'll see chargers with nothing more than a USB slot (no cable) specify that they're only compatible with Apple devices. Technically, they're compatible with any USB device, but not at the high charge rate.
Having said that, manufacturers can build in some safeguards. Quality chargers simply won't output more current than they're designed for. How they go about this varies. They may limit the output to their rated specs, they may blow an external breaker, or they may blow an internal fuse (usually killing the charger forever). Cheap chargers may not have such safeguards. Plus, many (if not most) phones/tablets will recognize when they're hooked up to a low-current source, and automatically switch to the low charge rate mode (0.5A).
In short, quality equipment is usually designed to be safe, with safeguards to protect against common scenarios. It's the cheap chargers that you have to worry about, because they tend to cut corners to keep the cost down. Safety provisions aren't technically necessary, and are usually the first to go.

Using a 2A charger

Anyome using a 2A charger instead of a turbo charger?
Like a samsung 2A charger
Or a 2A power bank?
Any issues?
Because 1150 mah is too slow

I was also wondering this.I tried it with my 2,4a ipad charger once and it was charging twice as fast, but i dont know if this is good for the phone. Using the normal charger again to be sure.

With normal 1.2A charger, it takes almost 3+ hours for my phone to fully charge. I used my Galaxy Note 10 charger which is 2A and it got charged in 2 hours. I read it in the forums that even with 2A charger, we cant take the advantage of turbo charging as it will need a charger of 2.4A.
I dont know how 0.4A will make a difference but still, my knowledge is limited in this case and wouldnt want to comment on it.

The charger has to be Qualcomm QC 2.0 certified (that's a specification) to take advantage of the turbo charge mode. The amps put out by the charger is kind of secondary in this situation as the charger and phone both need to be "talking on the same page" i.e. QC 2.0
At that point (charger is QC 2.0) the special circuitry kicks in and goes into turbo mode. So its a little more involved than just throwing more amps at the phone. If you google Qualcomm QC 2.0 specification then it will give you a better idea of what it is all about.
Sent from my XT1563 using Tapatalk

Turbo charging steps up to 9v and 12v depending on what wattage the phone can handle.
I think our phones are 15w and the Style is 20w or so.
I can't get my phone to charge faster with a 2amp charger though, only my turbo charger.

I used digitech 2.4amp charge ans works like a charm superb....

It isn't causing any issues? Like battery degradation?
Sent from my XT1562 using Tapatalk

I've been using my Moto turbo charger every night for a couple weeks now and haven't noticed any issues. The phone doesn't seem to let the battery get over 35'C when its charging, so I don't imagine it'll damage the battery.
Think I may get a car charger soon, sometimes I forget to charge at night so it'd be cool to get a full charge on the drive in.

Battery will very likely not last as long when doing fast charging always compared to "normal" charges

Any fact to back that claim?

Im using a Belkin 2.1A charger, no problems whatsoever.

So what's conclusion is it safe to use 2a charger without doing damage to battery

prashu#1 said:
So what's conclusion is it safe to use 2a charger without doing damage to battery
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I'm using a 3a charger and it's fine

You can't harm a battery with a higher amperage output charger. The phone will only consume what it is able to. If the voltage was higher (excluding quick charge adapters) then yes that will do damage, but that's a strange situation as no charger should do that unless it's quick charge.
That being said, on hand I do have a feeling that quick charge can actually do long term damage if used a lot but on the other hand, it seems to limit the maximum temperature to around 38'C. Above 40'C can cause irreversible damage to the cell. I'm using a car charger now and when the phone is in use, it gets up to around 38 or 39 and it cuts back on the charging current.

Interesting article explaining Qualcomm, fast charge, turbo charge using all the same technique under different names. They all use the same Qualcomm technique.
http://www.androidpolice.com/2015/0...-need-to-know-about-charging-your-smartphone/

Faster charging?

i recently bought the P900 (wifi version).
full charge will take around 5 hours, which in practice translates to 4 hours (i never get to 0% and charging from 90%\95% and on will be slowed down by the device anyway).
is there any way to speed up the charging?
like buying a 5.3V 3A charger. will the OEM cable be able to transfer the additional current?
could the device even take advantage from a 3A charger?
if so, can you recommend on any?
its important to me because i always use 100% brightness.

No. In the past mobile devices (mostly phones) shipped with cheap 500ma chargers and bumping up to higher amperage chargers would have an affect on charge time. Those days are gone as charging efficiency of chargers and cost to produce have lead to included chargers being optimized for charging times. Charging circuitry in the devices is going to take what it's rated to take and no more, so once a charger is plugged into it that's rated the same as the device is designed to take there's little else that can be done to speed up charging.
Bottom line - the charger that came with the tablet if it's the official one (i.e. if you bought new, not used and someone included the wrong one) is optimized to charge the tablet at the fastest rate. Based upon the numbers you noted your charge times are not excessive, the tablet is designed to take around 2A and it won't take 3A even if the charger is rated for it.
If you want faster charging you need to sell your tablet and get a Snapdragon variant instead (LTE tablets from various carriers) or start practicing better battery management to reduce how depleted your tablet gets. For me that means not running at highest brightness unless I really need it and topping off the battery whenever I can. When I get really low and I have a reasonably long period that I can charge I'll sometimes shut the tablet completely down rather than put it to sleep so that charging is accomplished with near zero load on the battery.

oh, bummer.
well, i guess i would have to learn how to live with that.
TY for your reply.

im planning on buying a 2 port charger so i wont have to carry so many stuff with me,
how much slower the device will charge with a 5.0V charger?
should i look for a 2 port 5.3v charger? a normal device wont have troubles with that?

It's not the voltage it's the amps. If you want to charge two devices simultaneously as quickly as possible the power supply needs to be rated to output the wattage necessary to provide the amperage the devices will draw for maximum charge rate.
My recommendation is to find something capable of over 20 watts (2A x 5V = 20watts). I'd buy this for future Qualcomm quick charge use.
https://www.anker.com/products/A2031111
Sent from my SM-P900 using Tapatalk

my question was how much slower the note pro will charge with a 5.0v 2A charger as opposed to the OEM one which is 5.3v 2A.
and if there is any problem to use a 5.3v charger with a normal smartphone.
charging the note pro is more important to me than my other devices.

Yonany said:
my question was how much slower the note pro will charge with a 5.0v 2A charger as opposed to the OEM one which is 5.3v 2A.
and if there is any problem to use a 5.3v charger with a normal smartphone.
charging the note pro is more important to me than my other devices.
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Yes but you also noted that you want to buy a 2 port version and I'm saying that the voltage is only part of the equation. Unless you are already aware that you need one rated at 2A simultaneously (you didn't specify). I honestly never measured between the two, I do not worry about 5V vs 5.3V since the charging voltage of the lithium ion cells is under 5V anyway. AFAIK the current is more critical. Maybe someone else more knowledgeable in electrical engineering can chime in since I'm unsure how the charging circuit within the phone will step down the voltage from the charger to the battery. All I know is if one tops off regularly or charges overnight there's no night and day difference between the stock 5.3V charger and a 5V one so long as the aftermarket one is rated 2A or more.
Sent from my SM-P900 using Tapatalk

Question Do the wall wart and cable matter?

I have some Anker brand USB-A to USB-C charging cables and just the wall wart (is there a technical name for those things?) from something... probably one of my old Samsung phones... it says "Adaptive fast charging" and output says "9.0 V === 1.67A or 5.0 V === 2.0 A".
( know that stands for "volts" and "amps", but I don't understand what the rest of it means... 2 Amps is "faster" than 1.67 Amps... I think... but what makes it charge at one speed or the other?)
My real questions:
1) Will using the USB-A to USB-A cable that came WITH the Galaxy S22 Ultra make a difference in charging speed?
2) Do I need to get a different "wall wart"? If I want one that supports USB-C plugging into it, I do, but will it gain me anything?
Thanks.
Edit: I guess tehnically it's an "AC Adapter" or a "power supply brick"...?

See how what you have now performs. The best/fully compatible would be Samsung own charger. And any decent quality cables

I use my original charger from my Samsung Galaxy Note 4 on my S22 ultra. It charges it about 90 minutes. I suspect this is the same charger as yours.
1.67amps x 9v is 15.03watts.
5.00apms x 5v is 10.00watts.
15 Watts is a nice steady rate to be charging your battery at.
45w...is really too fast if you want your battery to last more than 2 years.

pjaysnowden said:
I use my original charger from my Samsung Galaxy Note 4 on my S22 ultra. It charges it about 90 minutes. I suspect this is the same charger as yours.
1.67amps x 9v is 15.03watts.
5.00apms x 5v is 10.00watts.
15 Watts is a nice steady rate to be charging your battery at.
45w...is really too fast if you want your battery to last more than 2 years.
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45W is nothing and won't really degrade your battery much. Also, keep in mind, that batteries degrade regardless if you use them or not, they have a shelf life. So, in 2-3 years you will mostly need to replace your battery anyway if you plan to keep your phone for that long (assuming that you want the battery to be at it's "full" capacity after 2-3 years).

ekin_strops said:
45W is nothing and won't really degrade your battery much. Also, keep in mind, that batteries degrade regardless if you use them or not, they have a shelf life. So, in 2-3 years you will mostly need to replace your battery anyway if you plan to keep your phone for that long.
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Even still...I'll keep slow charging my phone...knowing that it will last 5 years.
My note 4 battery outlasted the actual phone. The touch screen packed up first. The battery still lasted 6 hours screen on.
I replaced it with a Note 9. Again...the battery was fine...and original. Same story...6 hours of screen on time.
Now I have a Note 22....or S22 Ultra.
I have used the Note 4's charger for all of these phones...with my 10watt Kosee wireless charger. Even on the Note 4...with a wireless adapter.

ekin_strops said:
45W is nothing...
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It's still 10 Amperes into the battery.
I'm often running ~10 Amperes into my dual 224 Ampere-hour 6 Volt "golf cart" batteries.
They also weigh about 130 pounds more than your battery!

Renate said:
It's still 10 Amperes into the battery.
I'm often running ~10 Amperes into my dual 224 Ampere-hour 6 Volt "golf cart" batteries.
They also weigh about 130 pounds more than your battery!
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It doesn't push 10 Amperes into the battery.
PPS charging is pushing from 3.3V to 20 Volts at 2.25Amps, it's dynamic charging and it depends on the device's state (temperature of the battery, the charger, the capacity of the battery).
I'm not sure where you get this information, and not trying to be rude now but maybe you should check up on both PD and PPS charging protocols that Samsung uses before assuming it's charging at 10 amps.

Dougmeister said:
I have some Anker brand USB-A to USB-C charging cables and just the wall wart (is there a technical name for those things?) from something... probably one of my old Samsung phones... it says "Adaptive fast charging" and output says "9.0 V === 1.67A or 5.0 V === 2.0 A".
( know that stands for "volts" and "amps", but I don't understand what the rest of it means... 2 Amps is "faster" than 1.67 Amps... I think... but what makes it charge at one speed or the other?)
My real questions:
1) Will using the USB-A to USB-A cable that came WITH the Galaxy S22 Ultra make a difference in charging speed?
2) Do I need to get a different "wall wart"? If I want one that supports USB-C plugging into it, I do, but will it gain me anything?
Thanks.
Edit: I guess tehnically it's an "AC Adapter" or a "power supply brick"...?
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1. With Galaxy S22 there is an USB-C to USB-C cable not USB-A (maybe a typo on your side). That cable is rated for the full power charge the device supports, that is 45w. It can make a difference if you are using it with a proper charger (that's the actual naming for the "wall wart"...it is called "charger" or "wall charger" btw).
2. Yes, you should get a different one if you wanna charge faster. Your actual charger is a (so called) "fast" charger with the charging power varying from 15W to 10W. Your phone supports from 25W up to 45W, that are the "ultra fast" chargers.
I'd suggest to get at least a 25W charger, also there are some extremely good Anker alternatives (even better that original Samsung chargers), look for Nano II 635 or 615 Anker chargers.
If you wanna keep your phone for an extended period (like 4-5 years or more), you might wanna activate that battery protection charge that only charges it till 85% and will preserve it for a longer period. If you switch phones after 2, even 3 years, don't bother, charge it as you like fast or slow till 100%

ekin_strops said:
I'm not sure where you get this information...
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If the charger is rated at 45 Watts and sometimes actually delivers that:
45 Watts / (maximum) 4.3 Volt battery > 10 Amperes
Maybe they are PWM-ing it or whatever, but the peak current is > 10 Amperes.
Ok, we can subtract the efficiency of the buck converter, but it's still in that neighborhood.

What would happen if I bought and used a 65-watt charger? Would it automatically drop down to 45 watts to charge my S22 Ultra? Could it damage it, etc.?

Dougmeister said:
What would happen if I bought and used a 65-watt charger? Would it automatically drop down to 45 watts to charge my S22 Ultra? Could it damage it, etc.?
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1.Q. Yes.
2.Q. It not gonna damage it if not pushed to full 100% or discharged completely before connecting.

Sorry to hijack this thread, but is there a decent wireless charger, that will give me fast wireless charging with a Spigen powerarc arcstation pro 65w charger? I have tried about 3-4 cheap crap ones, and they all give reg wireless charging of about 22% for an hour's charge.

The S22U‘s maximum wireless charging rate is only 15 watts. I use the Spigen PowerArc ArcField 15 watt wireless charger, which is powered by a conventional charger via USB C cable and works very well charging my S22U.

Question Difference in charging speed

Is there a difference in charging speed between an Anker Nano 3 and the official Pixel 30W charger? I bought the Nano but accubattery tells me it only charges at 17 watts while the P7P should go up to 23 watts. Should I return it and get an official Pixel charger? Or is it normal that it doesn't reach 23 watts? Adapative charging was off while charging.

Since Anker is a well known brand, I would test it another charger. It very well could just the device only pulling 17 watts at that moment. I have multiple Anker chargers, cables and hubs at work and home. I have never had a charger fail or come up short on the rapid charging.

I have Anker cables and I noticed they charge much slower than the cables that came with and are designated for these devices. Still faster than my cordless charger.

Thanks for the replies. I'm using the official Pixel cable. I think I will order a Pixel charger and see if there's a difference.

I am using an Anker Nano Pro (20w) with Anker cables and my P7P charges in just under 2 hours which is only a few minutes slower than the official 30W brick.
This is a good read https://www.androidauthority.com/google-pixel-7-charging-30w-3226058/

Thanks, that's interesting. I will let my battery deplete further and see if the wattage is higher when charging from a lower percentage like that article says.

I am sure i have read in the past the Pixel 6 Pro over the whole charge averages only 13W, if your reading is for the average and not peak wattage then maybe 17W is right

Keep in mind that maximum charge wattage will drop off if the phone is doing things at the same time. Just turning my screen on and looking at the AccuBattery charging screen takes between 1-2W and there are spikes beyond that as apps do things.
It's not worth buying expensive chargers to get the highest wattage possible as it's a negligible benefit since the average is going to be way lower than the peak anyway. Both my OnePlus 9 charger and my Anker charger seem to peak around 19.9 watts with the screen on and they both support USB PD PPS.