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[Q] charger question

Hello,
I have a micro usb charger that cam with my hp touchpad. looking at the label it seems like it supplies a 2A current as opposed to the 1A our phone takes. Can i use it on the G2x resulting in faster charging or will i damage the battery?
thanks,
Ismail

imoumni said:
Hello,
I have a micro usb charger that cam with my hp touchpad. looking at the label it seems like it supplies a 2A current as opposed to the 1A our phone takes. Can i use it on the G2x resulting in faster charging or will i damage the battery?
thanks,
Ismail
Click to expand...
Click to collapse
You can use it as long as it supplies the correct the voltage. I use a 2amp charger with my G2X and I love how fast my phone charges. The phone will only draw as much as it can.

A faster charge results in a hotter battery. Some people think fast charging the battery is also the cause of the infamous SOD (Sleep of Death). Keep an eye (or ahnd) on your phone and make sure it is not getting too hot while on the charger.

phburks said:
You can use it as long as it supplies the correct the voltage. I use a 2amp charger with my G2X and I love how fast my phone charges. The phone will only draw as much as it can.
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Click to collapse
The hotter the battery goes, the shorter the battery life span will result as li-ion battery doesn't quite like in hot temp. Never tried a 2A charger to charge my G2X, so I would not know. But I am using a 1A charger to it and it works great If 2A charges does not cause the battery to go too hot, it should be fine.

I've been using this charger since May with no issues. The battery will only draw as much as its capable of drawing. As long as the voltage is the same as the stock charger then there is no issue. You could connect it to a 5 amp charger and it would still only draw the 1.x amps its designed to draw.

Going too low on amperage is where you have to be careful.

thanks for the replies, turns out that 2A charger is 5.3V as opposed to the 4.8V LG charger...

phburks said:
I've been using this charger since May with no issues. The battery will only draw as much as its capable of drawing. As long as the voltage is the same as the stock charger then there is no issue. You could connect it to a 5 amp charger and it would still only draw the 1.x amps its designed to draw.
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Click to collapse
+1 on that, LG may be dumb, but they're not dumb enough to let their phone overload with un-needed electricity.

[Q] Can I use my Galaxy S4 Charging block....

with the included Moto G USB cable to charge the phone? Obviously, the G doesn't come with a wall adapter so I was wondering if this will be OK - i.e. same voltage, etc. - and not fry the battery.
Thanks

terrapin69 said:
with the included Moto G USB cable to charge the phone? Obviously, the G doesn't come with a wall adapter so I was wondering if this will be OK - i.e. same voltage, etc. - and not fry the battery.
Thanks
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Click to collapse
Once i read that most new batteries (since 4 year ago to now) can use different chargers with higher amperage without being damaged, o i think you can. i think thats why they don't include charger, because most people already have one at home.

Fast charging causes reduction of long-term battery capacity
elestudiante said:
Once i read that most new batteries (since 4 years ago to now) can use different chargers with higher amperage without being damaged, so i think you can. i think thats why they don't include charger, because most people already have one at home.
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Click to collapse
My response here to the above answer is what I understand as a layperson who has recently done internet research into this issue of which power adapters would be ok to use with the Moto G. I will be happy to stand corrected by anyone who has contradictory authoritative information.
My understanding is based on the Battery University website entries on lithium ion batteries:
batteryuniversity.com/learn/article/charging_lithium_ion_batteries
batteryuniversity.com/learn/article/ultra_fast_chargers
Although the above quoted answer on using the Galaxy S4 charger with the Moto G is mainly correct (in that no direct damage to the phone circuitry or immediate damage to the battery will occur by using the higher amperage charger), there still will be a long-term negative affect on battery capacity by using a higher amperage charger.
I believe the S4 comes with a 2A charger. According to Motorola online support website
( motorola-global-portal.custhelp.com/app/answers/prod_answer_detail/a_id/97318/p/30,6720,9050/action/auth )
the Moto G will automatically restrict charging above 1500mA. So that would mean that a 2A charger would cause the Moto G to charge at the 1500mA rate. No damage would be done to the phone circuitry charging at the allowable rate of 1500mA, but the question remains if there would be a long-term reduction of battery capacity by charging at 1500mA for a year or more. The official Motorola charger sold online is now 1200mA. So the comparison should be between charging at 1200mA versus 1500mA.
According to the Battery University website, the optimal range to charge lithium ion batteries is between .5C and .7C. Lower charging rates result in less reduction over time of battery capacity. The C-rate unit is used to measure charging and discharging rates. A value of 1C is equal to the rated amperage of the battery. So, for the Moto G, 1C is equal to 2070mA. Therefore, according to this recommendation, the optimal charging range for the Moto G would be between .5 x 2070 = 1035mA and .7 x 2070 = 1449mA. So, charging at the Moto G's maximum of 1500mA would be just barely outside the optimal range.
But extrapolation from Figure 1 in the Battery University 'Fast and Ultra-Fast Chargers' article indicates that there would be an additional 9% reduction of battery capacity by charging at a 300mA higher rate of 1500mA over the official charger rate of 1200mA. This additional reduction in capacity of 9% would be over 500 charging cycles, or about 1.5 years of average usage. The normal reduction in capacity just from aging over 500 cycles is already listed as 16%, so adding the 9% would bring it to a total of 25% loss of battery capacity after about 1.5 years.
--------------------------------------------------
UPDATE and CORRECTION:
I have more authoritative information directly from Battery University that changes the conclusion I draw above based on my effort to extrapolate from the Battery University website article.
The extrapolation I did above was based on the additional loss of battery capacity cited when going from a 1C to 2C charging rate. But according to direct communication from Battery University, when charging at a rate below .7C there should be no measurable improvement to capacity by using slower charging rates. Charging above .7C would still be expected to add more stress to Lithium Ion Polymer batteries and likely add to long-term reduction of capacity.
So, what this means for the Moto G and Nexus 5 is that there should be no measurable difference between charging with 2A, 1.2A, 1A, or 850mA chargers as far as effect on long-term battery capacity goes. Both the Moto G and Nexus 5 are supposed to automatically restrict the charge rate at 1500mA even when using a faster charger, which is just at or below .7C for both phones. So, as long as the charger dependably keeps to 5V, a higher amperage 2A charger will be faster but pose no problem to long-term capacity.

Moto G wall charger

I have ordered a Moto G from England (GSM global version I presume), and while I am waiting for it to arrive, I would like your advice on what kind of wall charger to buy that would be optimal for the phone charge recommendations since my knowledge on the issue is very minimal.
I read somewhere that Motorola recommends between 0.5 - 1.5A , but that doesn't really tell me anything.
I have an old Samsing galaxy SII. Can I use the charger of the Galaxy for the Moto G? The output is 0.7A

As you said, any charger where the output is not too high (I recommend below 2a or below 2,5 to not stress the battery.
Conclusion: your samsung charger should work perfectly!
Edit: if you experience bad/not so good battery life (I did after update to kitkat), let your phone drain completely (shuts down) and recharge it to 100% and leave plugged in like 30-1h after it reached 100%.
But don't do this too often as it will harm your battery over time.

creambyemute said:
As you said, any charger where the output is not too high (I recommend below 2a or below 2,5 to not stress the battery.
Conclusion: your samsung charger should work perfectly!
Edit: if you experience bad/not so good battery life (I did after update to kitkat), let your phone drain completely (shuts down) and recharge it to 100% and leave plugged in like 30-1h after it reached 100%.
But don't do this too often as it will harm your battery over time.
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Click to collapse
Thanks. With 0.7 output would the charge be slow or fast?

creambyemute said:
As you said, any charger where the output is not too high (I recommend below 2a or below 2,5 to not stress the battery.
Conclusion: your samsung charger should work perfectly!
Edit: if you experience bad/not so good battery life (I did after update to kitkat), let your phone drain completely (shuts down) and recharge it to 100% and leave plugged in like 30-1h after it reached 100%.
But don't do this too often as it will harm your battery over time.
Click to expand...
Click to collapse
Using a charger over 2A doesn't stress the battery because the Moto G limits the current to 1.5A.
It says so right here : https://motorola-global-portal.cus...prod_answer_detail/a_id/97318/p/30,6720,9050
”Any Motorola charger with the correct micro-USB tip will charge your Moto*G. You will see the best results when the output of the charger is between 500 mA and 1.5 A. The higher the output, the faster your Moto G*will charge.
If your charger output is higher, the MOTO G will automatically restrict the charging rate. If your charger is lower, it will simply take longer to reach a full charge.”
I use my nexus 7 2A charger daily and it charges noticeably faster than my 1A HTC charger and is as Motorola stated, perfectly safe.
A 0.7A charger would charge pretty slow!
Sent from my Moto G using Tapatalk

Just under 3hrs for a 0% to 100% charge with a .75 A charger for me.
Sent from my XT1032 using XDA Premium 4 mobile app

Im using a HTC charger i already had which is rated at 1a ,seems to be working fine.

my 0.5A from 20% to 100% ~3 hours. When charging from less than 20%, I often put my phone to aeroplane mode and get ~3 hours of charging too
Sent from my XT1032

mdentener said:
Using a charger over 2A doesn't stress the battery because the Moto G limits the current to 1.5A.
It says so right here : https://motorola-global-portal.cus...prod_answer_detail/a_id/97318/p/30,6720,9050
”Any Motorola charger with the correct micro-USB tip will charge your Moto*G. You will see the best results when the output of the charger is between 500 mA and 1.5 A. The higher the output, the faster your Moto G*will charge.
If your charger output is higher, the MOTO G will automatically restrict the charging rate. If your charger is lower, it will simply take longer to reach a full charge.”
I use my nexus 7 2A charger daily and it charges noticeably faster than my 1A HTC charger and is as Motorola stated, perfectly safe.
A 0.7A charger would charge pretty slow!
Sent from my Moto G using Tapatalk
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Many thanks. Could you recommend me on a good and not expensive charger that would do the job and charge it fast?
Since I dont live in the US, amazon is kind of useless to me since there are very few items they ship outside the US, so eBay would be a better option. I just dont want to buy something crappy

mazinya said:
Many thanks. Could you recommend me on a good and not expensive charger that would do the job and charge it fast?
Since I dont live in the US, amazon is kind of useless to me since there are very few items they ship outside the US, so eBay would be a better option. I just dont want to buy something crappy
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Click to collapse
I use a Blackberry branded 0.75mah micro usb charger which works well as does my Samsung Galaxy Tab2 which is 2amp charges nicely too.
I found an older HTC usb 0.7 charger did not work at all well for some reason.

charger doesn't push power, phone draws power, as long as you have the right voltage you are good

Pinktank said:
charger doesn't push power, phone draws power, as long as you have the right voltage you are good
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Click to collapse
Indeed but I've found some chargers vary for example my Samsung 2amp Galaxy Tab2 charger will not charge my Moto Defy+ phone, it sits there forever doing very little but the Moto G is fine with it. Probably due to the Defy+ only drawing 500mah and the Galaxy charger sees this as undercurrent and doesn't output whereas the MotoG can demand up to 1500mAh current which the Galaxy charger sees as acceptable and supplies the current.
I'd avoid any of the super cheap nasty Chinese crap chargers that seem very poorly built, unstable and potentially a death trap.

spannerz said:
Indeed but I've found some chargers vary for example my Samsung 2amp Galaxy Tab2 charger will not charge my Moto Defy+ phone, it sits there forever doing very little but the Moto G is fine with it. Probably due to the Defy+ only drawing 500mah and the Galaxy charger sees this as undercurrent and doesn't output whereas the MotoG can demand up to 1500mAh current which the Galaxy charger sees as acceptable and supplies the current.
I'd avoid any of the super cheap nasty Chinese crap chargers that seem very poorly built, unstable and potentially a death trap.
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Click to collapse
Sorry I meant to quote the advice above that said don't get something with too large a current.
Absolutely avoid cheap chargers, burnt home totally not worth the savings. The hp chargers left from the time they used to make tablets are pretty good actually, tested with an oscilloscope

I dont want a crappy cheap Chinese charger. Thats why I am asking for a recommendation. I have a nexus 7 2013 and the output is 2A. I assume I can use it also to charge the Moto G?

mazinya said:
I dont want a crappy cheap Chinese charger. Thats why I am asking for a recommendation. I have a nexus 7 2013 and the output is 2A. I assume I can use it also to charge the Moto G?
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Click to collapse
That should be fine

That's funny hey, the Australian version comes with USB cable wall charger and Motorola headset. This is the XT1033 variant.
Sent from my XT1033 using Tapatalk

mdentener said:
I use my nexus 7 2A charger daily and it charges noticeably faster than my 1A HTC charger and is as Motorola stated, perfectly safe.
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Click to collapse
I'm curious, is your 2A charger for a 2012 Nexus 7? Because I also plan to use my 2012 Nexus 7 charger on my Moto G, which is coming next week. How quickly does it charge the Moto G?

consolegam3r said:
I'm curious, is your 2A charger for a 2012 Nexus 7? Because I also plan to use my 2012 Nexus 7 charger on my Moto G, which is coming next week. How quickly does it charge the Moto G?
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Click to collapse
Yeah my nexus 7 is a 2012 model also, works just fine and charges really fast. I'll stopwatch my next recharge and report.
Edit: It charges from 10% to 100% in 2 hours with my nexus 7 2012 2A charger while incidentally using it.
Next charge I'll try my HTC 1A charger to monitor the difference
Sent from my Moto G using Tapatalk

2 hours 10 minutes from 0% to 100% with 1A charger

mdentener said:
It charges from 10% to 100% in 2 hours with my nexus 7 2012 2A charger while incidentally using it.
Next charge I'll try my HTC 1A charger to monitor the difference
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Click to collapse
Great, thanks for finding out!

I have a charger from Htc Explorer with this specification Input: 100-240v~200mA 50/60hz / Output: 5V-1A , and don't seems to work very well, is normal???
Thanks in advance

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.
Click to expand...
Click to collapse
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 Max charge rate for Moto G Stylus (2021)?

So when you buy a Moto G Stylus (2021), it comes with a 10W charger. And 10W that is sort of what is cagily listed on the Moto website for this device. But when I plug it into a QC3 charger, I get about a 14W charging rate (5V x 2.8A). Does anybody know the maximum charge rate for this device, and specific charger models that can provide it? Would a USB-C PD charger at a higher wattage be able to charge at a faster rate? Thanks in advance for your comments on this matter.

To answer your question, yes a USB C PD adapter would provide faster charging. So long as it's QC 3.0 or higher. 18W or 30W should be fine, I believe the phone input charge maxes out at 15 Watts (absolutely no permission to quote me on that lol) so if you don't mind a bit of heat and the potential of degrading your battery slightly faster than with charging on a standard 1A, 2.4V charger, then the 18W or 27W USB C wall adapter that is compatible with QC 3.0 or 4.0, should be sufficient. Don't forget to grab a couple good grade USB C to C cables as they are often the first thing to go bad and prevents turbocharge from kicking in.

Thanks for the comments, @mario0318 So if I am currently seeing 14W (5V x 2.8A) with a QC3 charger, it sounds like I may be near the max already if it is only 15W. I have no USB-C PD chargers yet that I can use to test, but there was a 25W Belkin model on sale today (for Black Friday) for just $10 so I ordered myself one. When it comes in, I'll test it versus the QC3 charger to see if there is any significant difference.

So I have a basic update here. The QC3 charger I mentioned has an LED readout on it, and that is where I got the estimated 14W charge rate (as 5V x 2.8A). The new 25W Belkin charger I got does not have an LED readout for V & A on it, however. So I turned to the Ampere app on the Play Store. Then I swapped back and forth between the two charging systems and watched the estimated charge rate on Ampere. The 25W Belkin charger definitely shows higher charge rates according to the Ampere app. But I've ordered myself a USB C charge meter (like the old USB "doctor" meters, but with USB C connections) from China to document it more closely.
I might be missing something, but one thing I see lacking with the Ampere app is logging capability--it seems like its strength is just showing rates in real time. It would be cool to find an app that can not only monitor in real0time, but also log charging events with V & A stats, etc. I see AccuBattery may potentially provide this. Or any suggestions out there for another battery charge monitoring app that you think might do the trick?
For those potentially interested in the 25W Belkin charger, the specific model is the "WCA004dqWH", and it is on sale now for $10. It is actually mentioned in a news snippet here at XDA:
https://www.xda-developers.com/belkin-usb-c-25w-charger-deal-november-2021/

I think the Battery Manager app by 3C allows recording logs for power charging events. But I forget if there's a limit with the free app compared to the paid/donate unlocked features.
Regarding the charger wattage, I'm fairly sure anything past 25W would be over kill for charging a single device like the 2021 moto g. At that point it becomes more suitable for two devices, with anything far higher like 60W or 85W being totally unnecessary and potentially harmful.

Thanks again, @mario0318 , for your new comments. I agree that anything beyond 25W would be overkill for this phone.
As a further update, I decided to swap over to AccuBattery, and upgrade to the Pro version. As my Stylus was already charged, I decided to try the two chargers with a Nord N10 5G that had arround a 40% charge. The QC3 charger was charging at an average of 1993 mA with the screen off after I left it sit for a few minutes. When I swapped to the 25W Belkin sytem, it jumped to 2993 mA under the same scenario so like a full 1 Amp difference. These are about the same differences I noticed between the two chargers when charging my G Stylus (2021), but I did not want to say that above because they were off-the-cuff observations. But I took screenshots with AccuBattery this time so no apprehension in stating values this time around. I'll do the same with my G Stylus next time it needs a charge.
AccuBattery suggests only charging up to 80% capacity vs. 100% capacity given the wear and tear difference on the battery. I guess I'll try that, but in the long run, replacing the battery on the G Stylus (2021)--if it ever becomes necessary--looks pretty doable based on teardown videos.