Develop Bugs

[Q] Charging

Does anyone know the minimum specs for buying a charger? 2.1A or higher? Looks like some places are adding watts to the output capability as well.
All my old chargers aren't cutting it anymore and I need something for the car and other outlets. BTW, I have a VS985.
Thanks in advance!

The stock is 1.8A. So I'd go off that.
Sent from my LG G3

2.1 A won't hurt your phone but keep in mind charging is limited by the cable and the chips capacity. Let's say you have a 5A charger your phone won't charge at 5A but rather its max rate. Make sure you get a good cable to use as well because if it can't handle the amperage it could cause serious issues and or fires in some cases. I use a 2.1A charger and its fine.

[Q] Qi 2A output charger?

Can anyone recommend one? Or does it even exist? I can't find anything online.
Thanks

There is a 5v 2amp wall adapter - http://www.amazon.com/gp/product/B0...kCode=as2&tag=dcre-20&linkId=DB5ZD4J34NIWRZUR

iazybandit said:
There is a 5v 2amp wall adapter - http://www.amazon.com/gp/product/B0...kCode=as2&tag=dcre-20&linkId=DB5ZD4J34NIWRZUR
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re-read the title

stas333 said:
re-read the title
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From what I have seen and read, the most a Qi charger will output is 1amp
That link I posted is for those who have low amperage and having issues with Qi charger.

I was looking for a qi car holder, tho recent feedback on different models suggests 1a qi is not enough to actually charge the G3 while using satellite navigation software, due to the drain from the gps/screen/CPU. I found that using an old 0.8amp USB charger in the car lost a similar 5-ish% an hour when used for sat nav as when using an in car qi.
Sent from my LG-D855 using XDA Premium 4 mobile app

As hot as the phone gets on a 1A Qi charger I think you'd just be asking for a fire at 2A. I haven't found one either though.

I have this one and it's working perfectly.
http://www.ebay.com/itm/301216991843?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

2dorr said:
I have this one and it's working perfectly.
http://www.ebay.com/itm/301216991843?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
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we are talking about the Qi charger aka wireless!

I've been doing some extensive digging for a 2a Qi system myself. The highest available system is unfortunately 1a. BUT... In order to get the 1a, not only does the charger (transmitter) need to be rated for at least 1.5 - 2.0a output because of poor efficiency, but your receiver in your phone needs to be rated at a 1a output. This is why you see several people who are only charging at 600-700ma. For my Note 3, I have found a 600ma, 700ma, & finally a 1a receiver coil. The Samsung charging backplate is actually only rated at 600ma. Just make sure you look before you buy. I bought an Itian A6 charger combo and it only has a 600 also, but the transmitter I believe 1.5a. I'll just have to pick up another coil once my charger arrives. Damn China Post takes forever.
Anyway, hope this helps answer your questions. Wireless Consortium approved a medium voltage guideline and I just read that they have come out with a Qi system that is 97% efficient. Our power demands just need technology to catch up.
---------- Post added at 05:45 PM ---------- Previous post was at 04:57 PM ----------
The heat is due to the inefficiencies, most Qi chargers lose 25% of the transmitted energy, which ends up being the source of heat. The newer 97% efficient chips will be much cooler. Also a good receiver coil is thermally protected and will shut down the charge at a threshold temp. The quality of the receiver coil is the most important part of Qi. But don't forget, charging any battery rapidly will cause heat as well. There was a news story about 2 months ago of a kid who slept with her phone under her pillow and caught fire from improper ventilation. If your phone is heating up that hot, you may want to remove any case it's in. Charging up with Qi and a metal backplate isn't exactly the smartest thing to do either.

Yes it does exist
stas333 said:
Can anyone recommend one? Or does it even exist? I can't find anything online.
Thanks
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well I'm also on a similar hunt..
the closest option i found was the google qi enabled pad for 50$ rated at 1.8A out
and not too sure about this because the website doesnt say much but the samsung one is 2A

Oops didn't see Qi Charger :X

According your description I don't think it exists. I believe the charging power not only depends on the charger, but also on the Qi receiver in your phone. If the receiver doesn't take more than 1A, then the charging speed would not have any difference regardless of you're using a 1A or 2A wireless charger.

Does anybody know what the stock LG receiver is rated at
Sent from my XT890 using Tapatalk

parthtrivedi said:
well I'm also on a similar hunt..
the closest option i found was the google qi enabled pad for 50$ rated at 1.8A out
and not too sure about this because the website doesnt say much but the samsung one is 2A
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I think the 2A refers to input, the output might be 1A also

GTR88 said:
I think the 2A refers to input, the output might be 1A also
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My qi charger is a generic cheap one, its rated at 2 amp in and 1 amp out. I presume it only delivers 700mah cause of how inefficient wireless charging is, I was under the impression 1 amp was that max qi standards could handle at the moment?

Basically, if you want a reliable and fast charge then you can't beat a wired connection. I don't understand really what difference it makes from plugging in a cable on the bottom to placing it on a Qi charging mat/pod. From what I have read, wireless charging is not really good for ur battery and should not be a substitute for a wired charger.
If you get a good 2A charger it will charge the phone in about 100 minutes if you are not using it.

Did someone try Samsung S6 Qi Wireless Pad with LG G3?
I'm considering to buy it but saw on Samsungs website that charger is 2A and it is not recommended to use it with lower amp adapters because it may damage it....
The G3's 1.8A...
Will that adapter give any harm to Qi Pad?
Thanks for any reply

that"s why i find wireless chargers gimmick
why should i put a 2a charger in the QI charger too fùking output 1A why...
i have a wirless charger and its anoying cause u need to put the phone on in the right way. and it charger so slow i mean if you put your phone on the wirless charger pad why not take the usb cable and put it in... to get 2a fast charging. (and use a reversible micro usb cable)

Try qi infinity
Try qi infinity
stas333 said:
Can anyone recommend one? Or does it even exist? I can't find anything online.
Thanks
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Wireless charging

Anyone using wireless charging on the MI3? It's only possible with a receiver, btw, it's not built in.

Wireless Charging
reneftw said:
Anyone using wireless charging on the MI3? It's only possible with a receiver, btw, it's not built in.
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I am curious has anyone tried using a wireless charging add on and know if it works properly?

I'm a writer for Qiwireless.com and I use my Mi3 with a universal wireless charging receiver to charge it.

I saw something here: facebook.com/MiuiCzechSlovakXiaomi/posts/10152284167068959
Manufacturer named Lencow doing this type of chargers for MI's. You can find the net for the price.

is it for real that mi3 supports wireless charging??

sdnavale said:
is it for real that mi3 supports wireless charging??
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Note, WITH a receiver. A receiver is a piece of hardware which sits under the base of the phone, and is connected to the charging circuit. Just google the term.
You'd have to be really motivated to take your phone apart, just to attach that. Without considering the space that module would need vs the available space inside the phone, which is pretty slim to start with. Actually with a metal phone back, I believe the module would have to sit outside of the phone, between the plastic cover and the back - so the phone back would not be flat.
I have had a Nexus 4 with wireless charging for the last 2 years, and I rarely use the wireless charger I bought:
- charges slower than a wall charger
- if you pick the phone up - as we all do - you stop charging and additionally multiply the number of charging cycles.
Cables are not as cool as a Qi pad, but a Qi pad also needs its cable...
Anyway, out of the box, the mi3 doesn't do wireless charging - just confirmed that with my wireless charger

stupid!!! pls improve yourself bout the 'Electronic Science and Technology' knowledge~ don't ask such an idiot question!!!

Charging speed on various ROMS

I know DASH charge is not supported on roms until later in July when the source is released but what are the charging speeds on various roms?
Do they get full charging speed at 5V?
On my oneplus 3 - Oxygen OS - I get 5V 1.5amps with the google nexus 5v/3a charger. In fact, it seems to limit charging speed to 1.5amps max for non dash chargers.
Can ROMs get 5v/3a?
Thanks,
Rico

Not until OP releases the source code. Hopefully by the end of July DASH charging will be implemented in custom ROMs.
The OP3 light ROM is basically custom stock and supports 5V/4A charging.

Not exactly what I mean. Can any of the custom Roms charge at higher than 1.5a at 5v? Most phones now can at least go to 2a if not 2.4a. Nexus 5x/6p can charge at 5v/3a.
Any Roms with charging rates above 5v/1.5a?
Any kernels?

iamrico00 said:
Not exactly what I mean. Can any of the custom Roms charge at higher than 1.5a at 5v? Most phones now can at least go to 2a if not 2.4a. Nexus 5x/6p can charge at 5v/3a.
Any Roms with charging rates above 5v/1.5a?
Any kernels?
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i got that same observations too if some kernel is released which can take at-least 2A of current without the dash chargers it would be awesome as then we can charge fast from power banks too

I would love them to remove the 1.5a limit as it 'currently' stands... Crazy that they don't allow rapid charging that's possible with Nexus usb-c to usb-c spec adapters

evilangelic said:
I would love them to remove the 1.5a limit as it 'currently' stands... Crazy that they don't allow rapid charging that's possible with Nexus usb-c to usb-c spec adapters
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I can use Dash Charge here with CM13, no problems at all.
Maybe you are using an old ROM?

evilangelic said:
I would love them to remove the 1.5a limit as it 'currently' stands... Crazy that they don't allow rapid charging that's possible with Nexus usb-c to usb-c spec adapters
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vitorgatti said:
I can use Dash Charge here with CM13, no problems at all.
Maybe you are using an old ROM?
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Certainly you can do that. I was continuing to talk about how the Stock ROM from oneplus is handicapped by limiting charging that isn't Dash, to 1500mA max input current (as far as my observations and a quick Google have shown), just complaining about Stock basically... Java
I guess they want you to buy more Dash equipment instead of getting 3A rapid charge out of a usb-c to c spec charger

This is because the Limit of the cable. Most cables only support 1500mA. So to prevent it from smelting it will only Dash charge with a Dash Charger..

Demian3112 said:
This is because the Limit of the cable. Most cables only support 1500mA. So to prevent it from smelting it will only Dash charge with a Dash Charger..
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+1
People tend to not understand that the limitation is there for safety reasons. You can't safely use all kinds of fast charging with all kinds of hardware.
DASH keeps the voltage at stock 5V and bumps up the current to 4A, which would destroy standard cables (too thin).
Other types of fast charging mostly keep the current lower, but bump up the voltage. OnePlus 3 *does not* support QC3 (technical limitation, not software) so you're stuck with 5 volts. And at 5V you can't safely go above 1.5A with any cable.
So, if you want fast charging, you have to use DASH or VOOC (VOOC accessories are confirmed to work as intended with OP3 and tend to be cheaper).
Sent from my OnePlus 3 using Tapatalk

Sure, I understand that, but none of this is what I'm asking as far as I'm aware. Let me say it like this..
I'm sat here with three Nexus chargers.
They output 5V at 3A (to a 5X and 6P) as per USB-C to USB-C spec.
I also have a PC motherboard with a USB-C port. It also conforms and allows 3000mA through the cable. Because all USB-C to USB-C CABLE is supposed to allow up to 3000mA by the standard. DEVICES can request that to be 1.5A or 3.0A.
The USB-C to USB-C spec cable is 3000mA
I plug it into my OP3 and it only allows 1500mA
I'm pretty much just *****ing at Oneplus for not allowing something LESS than Dash charging on a certified specification for the USB-C port.
We are taking 5V 3A USB-C spec (can't by design be thin cables) versus 5V 4A DASH (custom USB-A cable) which means NO danger of melting cables.
So is the OP3 port just not compliant?
To follow up from wiki:
All USB-C to USB-C cables are considered full-featured USB Type-C cables and must be active, electronically marked cables that contain a chip with an ID function based on the configuration channel and vendor-defined messages (VDMs) from the USB Power Delivery 2.0 specification. USB Type-C devices may optionally support bus power currents of 1.5 A and 3.0 A (at 5 V) in addition to baseline bus power provision; power sources can either advertise increased USB current through the configuration channel, or they can support the full power delivery specification using both BMC-coded configuration line and legacy BFSK-coded VBUS line.
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So basically Oneplus in my eyes must have made a call to not enable 3A on a USB-C/USB-C cable, seeing as the in-device hardware is able to stomach 4A. It's just a matter of allowing communication to the USB-C spec charger to say, send 3A, I can cope with it.
I'd love to hear what you guys think.
I have a USB-C/USB-C car charger with 2x USB-A ports, and so i'm really bummed out that the OP3 won't accept the perfectly reasonable and safe 5V 3A it can give. I use the two other USB-As for other devices, so I don't want the single port DASH car charger from OP. It's a waste of space and investment...

evilangelic said:
So basically Oneplus in my eyes must have made a call to not enable 3A on a USB-C/USB-C cable, seeing as the in-device hardware is able to stomach 4A. It's just a matter of allowing communication to the USB-C spec charger to say, send 3A, I can cope with it.
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I see that I forgot to mention another important piece of information before - the statement that I quoted here is not entirely true.
Remebrer that OnePlus boasted about keeping the device cool even while fast charging? Well, that's because they moved some of the hardware from phone to charger itself. Meaning that the phone alone does not have all the necessary internals to handle different charging inputs. Which is probably the reason that it only gives you 2 options: DASH or standard 1.5A @ 5V.
Sent from my OnePlus 3 using Tapatalk

Explorer23 said:
+1
People tend to not understand that the limitation is there for safety reasons. You can't safely use all kinds of fast charging with all kinds of hardware.
DASH keeps the voltage at stock 5V and bumps up the current to 4A, which would destroy standard cables (too thin).
Other types of fast charging mostly keep the current lower, but bump up the voltage. OnePlus 3 *does not* support QC3 (technical limitation, not software) so you're stuck with 5 volts. And at 5V you can't safely go above 1.5A with any cable.
So, if you want fast charging, you have to use DASH or VOOC (VOOC accessories are confirmed to work as intended with OP3 and tend to be cheaper).
Sent from my OnePlus 3 using Tapatalk
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Explorer23 said:
I see that I forgot to mention another important piece of information before - the statement that I quoted here is not entirely true.
Remebrer that OnePlus boasted about keeping the device cool even while fast charging? Well, that's because they moved some of the hardware from phone to charger itself. Meaning that the phone alone does not have all the necessary internals to handle different charging inputs. Which is probably the reason that it only gives you 2 options: DASH or standard 1.5A @ 5V.
Sent from my OnePlus 3 using Tapatalk
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Yes, but literally three amperes is less than four amperes. The voltage is the same. There is no different internals technically required to intake Less then the maximum amperage, that's just plain electronics.
The issue with heat they quote is due to Qualcomm Quick Charge using higher VOLTAGE which means a greater 'pressure' of current. Higher voltage needs better internals, but both of what I'm talking about are 5V and need no additional hardware to receive LESS amperage of 3A versus DASH's 4A.

every new roms support dash charge now

Is it possible to enable 15W USB-C fast charging? (5V/3A)

I ask this since it seems more feasible than enabling something like Quick Charge 3/2.X since this method is open and not proprietary.
It also seems feasible since the OnePlus 3 can clearly handle up to 4A of current at 5V (dash charge) so in terms of hardware it should be able to handle 3A at 5V similarly to the Nexus 5X/6P via the standard USB-C spec.
It doesn't even seem to be able to handle 2.4A via a USB-A to USB-C cable, or even via a USB-C charger using a USB-C cable.
Is there some hardware or software limitation I'm perhaps missing? If it's a USB-C device it should be able to charge via the USB-C standard

To my knowledge one plus promised dash source by the end of July. Also to my knowledge is something must be enabled and PCB hardware must enable fast charging. Galaxy s7 doesn't have qc3.0 despite having the correct hardware.

ahrion said:
To my knowledge one plus promised dash source by the end of July. Also to my knowledge is something must be enabled and PCB hardware must enable fast charging. Galaxy s7 doesn't have qc3.0 despite having the correct hardware.
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i do understand something needs to be enabled for QC2/3.X but why for USB-C?

Short answer ... no one knows and they're talking out of their ass ...
Long answer - Even if its a hardware/software enabled type feature - most do not know how to program it well enough to incorporate it. So everyone has to rely on source code with it already programmed to include it with any rom. Some guys can program it but dont have the resources and/or phone to do so. The average programmer reading your comments doesnt know specifics which is why you get a lot of "to my knowledge" "as far as I know" "in theory" type statements
Rico
2x4 said:
I ask this since it seems more feasible than enabling something like Quick Charge 3/2.X since this method is open and not proprietary.
It also seems feasible since the OnePlus 3 can clearly handle up to 4A of current at 5V (dash charge) so in terms of hardware it should be able to handle 3A at 5V similarly to the Nexus 5X/6P via the standard USB-C spec.
It doesn't even seem to be able to handle 2.4A via a USB-A to USB-C cable, or even via a USB-C charger using a USB-C cable.
Is there some hardware or software limitation I'm perhaps missing? If it's a USB-C device it should be able to charge via the USB-C standard
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Quickcharge is closed and proprietary, it's just the licensing is cheap. It only work on phone that have recent qualcomm SoC. Yes our OP3 have a SD820 but the manufacturer also have to implement it in the phone, with software but also hardware.
It's a shame that Oneplus didn't use Quickcharge because with the price of one Dash Charger or VOOC charger you can buy a 6 port quickcharge 3.0 charger... And quickcharge can use standard cable (if you use another usb C cable than the one provided, the red and blue one, dash charge don't work even with the dash charger)
So I'll tell you one reason why the Oneplus 3 won't support quickcharge even with some hack : charging a lithium battery at a high voltage make it go BOOM!
Quickcharge use 9, 12 or even 20V to make charge faster (and it's an advantage with low quality usb cable). So the phone have to be able to convert 9 or 12V down to 4.2V and it's a hardware matter.
Now for the 5V/3A of the USB-C spec, it's Oneplus that limit it (and it's safer that way). I tested many charger with a voltmeter. I used some charger from 1.8A to 2.4A and it only draw 1.5A. I used a genuine apple charger at 1A (the A1400) and it only draw 0.5A, the same when it's hooked on a computer. With the dash charger and the dash cable, it go up to 3.5A. It's not 4A but it charge pretty fast. With the same charger but with a normal USB-C cable (2.0 and 3.1 i tried) it draw 1.5A.
So the dash cable use some extra pin to make the phone identifying the dash charger and the dash cable, when one is missing, it charges at 1.5A or even 0.5A.
Why Oneplus don't use the full 3A of the USB-C spec? Dash charge/VOOC I guess.

Le_Zouave said:
Now for the 5V/3A of the USB-C spec, it's Oneplus that limit it (and it's safer that way).
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If it's "unsafe" then why would Google use in the Nexus line? If anything, all of the quick charge out of spec systems (like dash charge or quick charge) are "unsafe"
Le_Zouave said:
Why Oneplus don't use the full 3A of the USB-C spec? Dash charge/VOOC I guess.
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you can have BOTH. why REMOVE USB-C 15W charging?

charging slower is safer than charging at high voltage or intensity, I didn't imply anything else.
If the charger provided can do 5V 3A like the one provided with the Nexus 6P can actually charge at 3A a Oneplus 3, how can you sell a dash charger with a dash cable that do 3.5A (and the VOOC charger that is even more expensive and need a micro usb to USB-C adapter)

Le_Zouave said:
charging slower is safer than charging at high voltage or intensity, I didn't imply anything else.
If the charger provided can do 5V 3A like the one provided with the Nexus 6P can actually charge at 3A a Oneplus 3, how can you sell a dash charger with a dash cable that do 3.5A (and the VOOC charger that is even more expensive and need a micro usb to USB-C adapter)
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Easily? Dash charge is far more quick not to mention heat efficient
Also, slower charging is not safer by default -it's less hot charging that is safer more so,

Dash charge is heat efficient? Yes it will be warmer on a cold day. Like any battery charging slower is better for the battery life.
I don't understand your last sentence, sorry
If you are talking about the efficiency between the power on input and output from the charger, I think that the power is not high enough to really make a difference with a standard charger.
I am still a big fan of Qualcomm quick charge because I could use a 3 meter (10ft maybe) usb cable not even made of thick gauge.
Envoyé de mon ONEPLUS A3003 en utilisant Tapatalk

I think what he is getting at is during quick charge the higher voltage results in more heat in the phone, with dash charge the heat is contained in the charger. Thus phone stays cool during charge which is safer for the phone.

ghostofcain said:
I think what he is getting at is during quick charge the higher voltage results in more heat in the phone, with dash charge the heat is contained in the charger. Thus phone stays cool during charge which is safer for the phone.
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Exactly.