My question is would using a 2.1 amp wall charger over the stock charger pose any danger of damaging my Flo?
Sent from my Nexus 7 using xda app-developers app
My stock charger is still unwrapped.
I'm using a 2A charger for all my tabs (Nook HD+, Nook Touch, old & new N7s).
TADitto said:
My question is would using a 2.1 amp wall charger over the stock charger pose any danger of damaging my Flo?
Click to expand...
Click to collapse
The charger spec just lists the max output. The tablet is the one that decides how much current to pull. So it is safe to use the 2 amp charger.
How fast will it charge with an 2,1 amp charger ?
fsi09 said:
How fast will it charge with an 2,1 amp charger ?
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Click to collapse
At this point, I don't think it has been determined. Install a battery monitor to see if it draws more current with a 2a supply over the stock 1.3a.
I am living in Germany so I don't have a Nexus 7 yet. But the charger of my mobile phone is broken and I would buy the 2amp charger, if it charges faster because I can use it with my Nexus 7, too.
fsi09 said:
I am living in Germany so I don't have a Nexus 7 yet. But the charger of my mobile phone is broken and I would buy the 2amp charger, if it charges faster because I can use it with my Nexus 7, too.
Click to expand...
Click to collapse
There is something to be aware of when buying a 2a supply. The original Nexus 7 required the data pins (2 and 3) of the charger to be shorted in order to draw full current (don't know if the new one behaves similarly).
The majority of usb chargers out there are designed with Apple products in mind, which shunt a resistive load across these pins to tell the device how much current is available. The result of using the original Nexus 7 with these chargers is that the device only draws about an amp.
My experience has been that HTC chargers have the correct pins shorted, while Monoprice's do not. Your on your own with any other brands. You'd need to measure those pins with an Ohm meter to be sure.
Related
I know that this is a really lame question but I was wondering if one offers a "better" charge? USB charges very slowly compared to the wall charger so I dont want to use it unless I have to.
Also, why does the car charger have a USB hub for the charging cable that comes with the phone if it has a micro USB hub on the end of the cable that is connected to the charger anyways? That is just redundant, is it not?
The wall charger will charge faster... As for 'better'? A charged battery is a charged battery. If you charge it faster than the wall charger allows, there's a potential for overloading the battery (though there should be safeguards to prevent explosive results). But the wall charger is what I'd suggest.
As for the car charger, it's to allow multiple devices. Micro USB for your phone, and a USB port to plug in anything else that might need it (like an iPad or something). If you don't have 2 devices, ignore the USB port and just use the micro USB connection.
takaides said:
The wall charger will charge faster... As for 'better'? A charged battery is a charged battery. If you charge it faster than the wall charger allows, there's a potential for overloading the battery (though there should be safeguards to prevent explosive results). But the wall charger is what I'd suggest.
As for the car charger, it's to allow multiple devices. Micro USB for your phone, and a USB port to plug in anything else that might need it (like an iPad or something). If you don't have 2 devices, ignore the USB port and just use the micro USB connection.
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Click to collapse
Thank you.
Most USB-based charging only goes at 500mA, where as the OEM charger is about 1.5 amps (1500mA). You can find some 2.0A USB car chargers on eBay / Amazon for fairly cheap. They're worth it to get a full charge if you are in a hurry or have a short commute.
Here's one that's 2.1A for $9.99 on Amazon
Cheyse said:
Most USB-based charging only goes at 500mA, where as the OEM charger is about 1.5 amps (1500mA).
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Click to collapse
I've noticed that it chargers obscenely quickly with the little OEM charger. Any idea where to buy more of those (or more similarly powerful chargers?)
wanderfowl said:
I've noticed that it chargers obscenely quickly with the little OEM charger. Any idea where to buy more of those (or more similarly powerful chargers?)
Click to expand...
Click to collapse
Amazon/eBay is your friend. You can find plenty of 2amp USB chargers for like $9 with free shipping.
Cheyse said:
Amazon/eBay is your friend. You can find plenty of 2amp USB chargers for like $9 with free shipping.
Click to expand...
Click to collapse
Silly question, but as long as it's a 5 volt 2 amp MicroUSB charger, it'll work? I just don't want to fry my phone using some incompatible charger.
wanderfowl said:
Silly question, but as long as it's a 5 volt 2 amp MicroUSB charger, it'll work? I just don't want to fry my phone using some incompatible charger.
Click to expand...
Click to collapse
yeah that should work. All Modern day phones have a voltage regulator to stop overcharging.
Warning: iPad Charger
I tried using the iPad charger yesterday and that didn't work out very well. My phone turned off and didn't charge. I couldn't turn it back on, had to do a battery pull to get it going again.
Not sure if this is an isolated incident or not, but I'm going to stick with my Nexus and/or USB charger.
bigknowz said:
I tried using the iPad charger yesterday and that didn't work out very well. My phone turned off and didn't charge. I couldn't turn it back on, had to do a battery pull to get it going again.
Not sure if this is an isolated incident or not, but I'm going to stick with my Nexus and/or USB charger.
Click to expand...
Click to collapse
I used an iPad charger a month ago and the phone only charged 40% over seven hours and when I picked it up it was scorching hot.
Sent from my Galaxy Nexus using xda premium
joshnichols189 said:
I used an iPad charger a month ago and the phone only charged 40% over seven hours and when I picked it up it was scorching hot.
Sent from my Galaxy Nexus using xda premium
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Click to collapse
It makes sense that your phone got hot. When using the stock charger (or any charger with a current rating of 1A or less), the charger is the one that is limiting the current to the battery, so the current-limiting circuit in the phone is not necessarily active and therefore not generating much heat. However, when using the iPad charger (which is rated around 2.5A, I think), the current-limiting circuit in the charger is not active because the 1A or so that the phone is drawing is well within the rating of the charger. Therefore in this case, the current-limiting circuit in the phone needs to actively limit the current and thereby generate a lot of heat.
I personally think that it's better to just use a charger that has a similar current rating to the stock charger. I higher-rated one might charge the battery just fine, but I'd rather keep all of that heat in the charger and away from the battery. Although, of course I could be mistaken -- feel free to correct me if I am wrong.
Hi,
I have some chargers at home and they all have different Amperes in their specs (see title).
Nexus comes with 1.0A wall charger.
Is it safe to use lower or higher ampere chargers?
For instance I have a 2.0A car charger which I bought for my iPad2:
Not sure if it's safe to use it.
Thanks!
Don't use anything over 5V/1A as it might fry your device. <1A should be no problem, <0.5A will be quite ineffective.
Valynor said:
Don't use anything over 5V/1A as it might fry your device. <1A should be no problem, <0.5A will be quite ineffective.
Click to expand...
Click to collapse
Thanks!
Then I need a new 1A car charger. That's not very good as I will need to have two chargers in the car (1A and 2A) because 1A is ineffective for iPad2.
From what I've read, the rated Amp doesn't matter. A 2A will work fine, but Nexus can only draw up to 1A no matter what.
wonshikee said:
From what I've read, the rated Amp doesn't matter. A 2A will work fine, but Nexus can only draw up to 1A no matter what.
Click to expand...
Click to collapse
If the Nexus handles it the right way .. yes. Until Samsung or Google tell me it's ok, I won't try it with my device, though.
FWIW, Apple says that it's okay to use he 2A iPad charger for its iPhone.
Sent from my Galaxy Nexus using XDA App
For some reason my new nexus 7 only works with the oem charger not my Galaxy S4 charger or other chargers. Anyone else have these issues?
Sent from my Nexus 7 using Tapatalk 2
Make sure it's the correct voltage and amperage. The oem charger spits out something like 1.3A. A lot of usb phone chargers output less than 1a
Sent from my Nexus 7 using xda app-developers app
my S4 charger works
S2 charger works also.
As does the S3 and N7 Gen1.
So long as it's 1A or greater it'll work at about the same charge rate (1A = slower, and anything over 1.35A won't charge much faster).
I invested in this a while back...best charger I own....
http://www.amazon.com/gp/product/B00BFQ9R0W/ref=wms_ohs_product?ie=UTF8&psc=1
I tried it on my Anker portable battery and it charged fine
Sent from my Nexus 7 using Tapatalk 2
It didn't work on a charger I had that had a "special" cable that only provided power and ground. When I used a normal USB cable, it worked fine, so it apparently wan't to see something more than just an open connection on the data lines before it will charge.
Its worked on any charger I threw at it including the iPad charger with a HTC cable. Wireless charging also works great with the Nokia one.
Sent from my Nexus 7 using Tapatalk 4 Beta
Works fine with my BB Playbook charger.
Obveron said:
Works fine with my BB Playbook charger.
Click to expand...
Click to collapse
Anyone tried using the Apple 12W 2.4 apm charger?
Is it ok to use more powerful charger than the one it ships with?
More capacity charger won't be a "problem" as the device determines how much power to pull. Lesser capacity charges can sometimes overheat if not designed well.
Often devices capable of charging faster will only go into that mode if they detect the charger is capable of doing so. Since the way they determine this is not standardized, sometime high capacity charger charge slowly. This could be caused by something on the charger side, or even the cable being used.
Worse case of using a higher capacity charger is it won't charge at all, but that is pretty rare. Often it will charge, either at a slow or fast rate.
Hi
Didn't think of this before I bought it.. But I've just received a QI charger from Amazon.
Which charger do I used with it?
The one from my nexus 5 or the one from the nexus 7 2013?
Ideally I want to be able to charge either device.
The QI states 5v 1500ma input.
Also what's the best app to monitor the charging, time, input heat etc?
Thanks
Sent from my Nexus 7 (2013) KitKat 4.4.2
I can't say for what apps to monitor times etc... But
Did your qi charger not come with a mains power adapter.
I can't say for the nexus 7 but the nexus 5 comes with a 5v 1200ma charger so it won't be able to supply the current that your qi pad needs.
Have a look on your nexus 7 power brick. It will tell you what it outputs.
Nexus 5
Input : 100-240V
50/60hz 0.2A
Output : 5.0V 1.2A
Sent from my Nexus 5 using xda app-developers app
albert_htc said:
Hi
Didn't think of this before I bought it.. But I've just received a QI charger from Amazon.
Which charger do I used with it?
The one from my nexus 5 or the one from the nexus 7 2013?
Ideally I want to be able to charge either device.
The QI states 5v 1500ma input.
Also what's the best app to monitor the charging, time, input heat etc?
Thanks
Sent from my Nexus 7 (2013) KitKat 4.4.2
Click to expand...
Click to collapse
what brand? you can try plugging it in your laptop. mine (Nillkin) says Input: 5V/2A but it still works just fine if i plug it in the laptop.
otherwise I use the Nexus 5 charger. I think it's just the maximum your charger can handle.
You can use any USB power source... What varies is charge rate. I picked up a 2amp supply from amazon. You have to figure in less than 70% efficiency... Especially taking into account non laboratory ideal conditions and manufacturing...
1 amp input will be like slow charging from a computer at best. 2 amp will be on par with regular wall charging if not better. You always want an adapter that is above what the charger can handle to make full use of the charger... Lower ones will still let it work to lesser and lesser degrees till it doesn't charge the device depending on supply and device needs
albert_htc said:
Hi
Didn't think of this before I bought it.. But I've just received a QI charger from Amazon.
Which charger do I used with it?
The one from my nexus 5 or the one from the nexus 7 2013?
Ideally I want to be able to charge either device.
The QI states 5v 1500ma input.
Also what's the best app to monitor the charging, time, input heat etc?
Thanks
Sent from my Nexus 7 (2013) KitKat 4.4.2
Click to expand...
Click to collapse
It can be used with either the Nexus 5 or Nexus 7 AC Adapters. The Nexus 5 is 1.2A and the Nexus 7 (2013) is 1.35A I believe. Neither will fully power the Qi charger, but it will still be enough to make it work. The charging time for your phone will just be longer since the Qi charger is not being provided full power, so the current the Qi charger can provide to the phone will also be lower. If you want your Qi charger to operate at full efficiency/power, try to use an AC adapter that is 1.5A or higher.
Since your Qi charger only requires 1.5A, the Nexus 7 AC adapter is the closest, so I would recommend using that one.
In the future though, you might want to consider buying a higher output AC adapter:
The Blackberry Folding Blade Charger is 1.8A output, and microUSB, so you can plug it directly into your Qi charger (or phone if you ever need to charge you phone at rocket speed!):
http://www.amazon.com/Blackberry-Folding-Blade-Charger-Playbook/dp/B004OZMWUS/ref=sr_1_30?s=wireless&ie=UTF8&qid=1391055305&sr=1-30&keywords=usb+wall+adapter
The Boxwave Fast microUSB charger provides 2A output, microUSB as well, so if you ever buy another Qi charger it would be good, as many Qi chargers require 2A input.
http://www.amazon.com/BoxWave-Amazon-Kindle-Paperwhite-Charger/dp/B0007POE6O/ref=sr_1_1?ie=UTF8&qid=1391055608&sr=8-1&keywords=boxwave+2a
You could also just buy an adapter similar to the Nexus 5/7 without the cord attached. For example, something like this.
http://www.amazon.com/PowerGen-2-4-Amp-Charger-Designed-Android/dp/B0073FCPSK/ref=sr_1_7?s=electronics&ie=UTF8&qid=1391057154&sr=1-7&keywords=2A+android+usb+charger
As for the app, with all of your criteria, I would suggest Battery Monitor Widget
https://play.google.com/store/apps/details?id=ccc71.bmw&hl=en
mmmmBACON said:
As for the app, with all of your criteria, I would suggest Battery Monitor Widget
https://play.google.com/store/apps/details?id=ccc71.bmw&hl=en
Click to expand...
Click to collapse
+1 on ccc71's apps -- I had several of his first-generation ones and recently took his generous offer to consolidate into Android Tuner (his all-in-one app). He has been great to work with on a dev level and his apps reflect his top-notch skills.
https://play.google.com/store/apps/details?id=ccc71.at (Yes, I found it valuable enough to go with the paid version)
https://play.google.com/store/apps/details?id=ccc71.at.free
Thanks for the replies
I've tried my nexus 7 charger with the qi pad and ran battery monitor widget.
Tablet showed at -432ma, sat it on the qi pad and it changed to -124ma!!
Why a negative figure ? I assume I'm using more power than its charging.
Would a 5v 2a charger male much difference ?
Sent from my Nexus 7 (2013) KitKat 4.4.2
Hi
Just had a thought the value I'm ready is when the screen is on, out it being off make any difference ?
Sent from my Nexus 7 (2013) KitKat 4.4.2
Try using currentwidget (free) to read just the current being provided during charge.
Set it to update at 1 second intervals.
Even with the screen on, if you are not using navigation, streaming stuff, gaming, etc. it should charge even if it is not getting the full 1.5A current provided to it. It would just charge slower not discharge.
Sent from my Nexus 5 using xda app-developers app
albert_htc said:
Thanks for the replies
I've tried my nexus 7 charger with the qi pad and ran battery monitor widget.
Tablet showed at -432ma, sat it on the qi pad and it changed to -124ma!!
Why a negative figure ? I assume I'm using more power than its charging.
Would a 5v 2a charger male much difference ?
Sent from my Nexus 7 (2013) KitKat 4.4.2
Click to expand...
Click to collapse
As I learned from another thread, the cable makes a significant difference. After using a 2a charger, current widget, and checking the charge of all my cables: 2 provided about 1.4a, a few 1.1a,and a large number of cables cut power down to 600 down to 300.
You need a capable 2a charger, a quality cable that you have actually tested, and a qi charger that accepts 2a and doesn't lose a majority when converting to induction.
Sent from my Nexus 5 using Tapatalk
Double03 said:
As I learned from another thread, the cable makes a significant difference. After using a 2a charger, current widget, and checking the charge of all my cables: 2 provided about 1.4a, a few 1.1a,and a large number of cables cut power down to 600 down to 300.
You need a capable 2a charger, a quality cable that you have actually tested, and a qi charger that accepts 2a and doesn't lose a majority when converting to induction.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Did it happen to be this thread? http://forum.xda-developers.com/showthread.php?t=2609087
You might have read that from one of my posts hahah.
I've said in different Qi charger threads to have a good 2A charger and to replace the included micro USB cable with higher quality cables (premium monoprice cables, or the Motorola Ecomoto)
I did a video demonstration on USB cable quality here. Didn't expect that drastic of a difference.
http://forum.xda-developers.com/showpost.php?p=49509790&postcount=52
Hi.
I'm using a nexus 7 charger
1st models charger is 5v 2a
I've tried the following cables: included, nexus 5, nexus 7 (1st edition and 2013) and a couple of other cables.. All with very similar results.
Think I'll send this charger back and then with a recommended one.
Sent from my Nexus 7 (2013) KitKat 4.4.2
I'm looking for a charger that will charge my Nexus 5 at full speed. I've tried a Griffin charger as well as a Monoprice charger and both are recognized as Charging (USB) by my Nexus 5. I assume they are designed for "proper" use with an iPhone, which I know can cause those issues. I am aware of the option to short the pins on the charger, but I would really rather buy one that works properly out of the box. Does anyone have any recommendations? I searched, but everything seems to be able using a wireless charger in your car.
I have the one like this http://m.ebay.com/itm/231122308378?nav=Search used it on my Motorola and now with nexus 5 shows as charging AC
This one is awesome actually. Motorola makes the best rapid car chargers. The quality of the build is phenomenal.
Motorola Vehicle Power Adapter micro-USB Rapid Rate Charger by MotionEaze http://www.amazon.com/dp/B000S5Q9CA/ref=cm_sw_r_udp_awd_OXZjtb1WSMV0K
Sent from my Nexus 5 using Tapatalk
Lol the title is funny. I had an image in my head of a car in the shape of a charger on full speed.
puska said:
I have the one like this http://m.ebay.com/itm/231122308378?nav=Search used it on my Motorola and now with nexus 5 shows as charging AC
Click to expand...
Click to collapse
FuMMoD said:
This one is awesome actually. Motorola makes the best rapid car chargers. The quality of the build is phenomenal.
Motorola Vehicle Power Adapter micro-USB Rapid Rate Charger by MotionEaze http://www.amazon.com/dp/B000S5Q9CA/ref=cm_sw_r_udp_awd_OXZjtb1WSMV0K
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Those two look like they are very high profile chargers. I know I didn't specify this, but I would prefer something a little less bulky. Also, they are under 1A while the Nexus 5 charger is 1.2A. Still better than the 500mA I'm getting currently.
bushako said:
Lol the title is funny. I had an image in my head of a car in the shape of a charger on full speed.
Click to expand...
Click to collapse
No, see, that would be a full speed charger car.
http://www.amazon.com/Anker%C2%AE-Dual-Port-Charger-iPhone-Galaxy/dp/B00D82O68Y/ref=sr_1_4?s=wireless&ie=UTF8&qid=1395090537&sr=1-4&keywords=Anker+18W
I use the 18W 3.6A version of this Anker Car charger. But seeing as the 24W is $9.99 while the 18W is $8.99, might as well get the higher output one (supplies one 2.4A Apple port, and one 2.4A Android port). Here in Canada the 18W is $19.99, 24W is $21.99....
They have full Android support, so it allows full speed AC charging if you have a good USB cable. They also have versions with a built in cable, but I prefer to use my own because if the built in one breaks, you're kinda screwed.
The 18W 3.6A car charger I have charges the Nexus 5 at around 1100mA (with a good USB cable). That's perfect to still charge the phone while simultaneously using navigation, streaming music, etc.
Have you tried different cables? I'm finding the quality difference between cables makes a difference in the charging rate.
I bought an att one years ago and it's the fastest charger I've ever used in my car. You can get it on amazon for about $8 shipped.
Sent from the jaws of my Hammerhead!
I bought this one a week ago. Only $6 and its fantastic. It charges my nexus 5 and 7 at full speed. http://www.amazon.com/dp/B007QRX54S/ref=cm_sw_r_udp_awd_19-jtb0GNAHB3
Sent from my Nexus 5 using XDA Premium 4 mobile app