My Defy is extremely picky when it comes to charging.
I tried a few different power adapters. All run at the standard 5V used by all USB ports. The only variable is the current.
The power adapter shipped with my Defy spits out 850 mA and apparently my phone doesn't like to eat any other current. With a 500 mA adapter my Defy won't charge at all. That's strange, because it charges fine when connected to my computer, and those USB ports max at 500. At 1000 mA my Defy charges OK, but the screen becomes hypersensitive. Just moving my fingers within 10 cm from the screen is enough to scroll, make icons believe they're tapped, and make the phone do all kinds of random stuff. Spooky!
My other phones all charge fine at 500 mA, 800 mA (default Nokia charger current), 850 mA, and 1000 mA. They don't seem to care about the current at all. Same for my camera with a microUSB port. Any current from 500 to 1000 mA works. Only my Motorola Defy is playing difficult and insists on 850, not more and not less.
Does this mean that there's something wrong with my Defy or is this deliberate sabotage by Motorola to stop us from using competing power adapters?
Mine charges off the Motorola one, a Sony Ericsson one, a ZTE one, a cheapo Tesco one and off the PC USB ports. The output of the charger will only effect the charge time.
Right now charging mine off my Kindle a/c charger. Seems to work.
Of course the Kindle adapter works. Its output current is 850 mA, just like Motorola's own adapter.
Did anyone ever try to charge a Defy with a 500 mA or 1000 mA adapter?
It wont work with chagers which are being made for other phones
http://forum.xda-developers.com/showpost.php?p=13871623&postcount=49
800mA current
Even an 800 mA charger won't work? That sucks. Why did the phone manufacturers agree on microUSB as charger port standard?
Fortunately my cheapo 1000 mA adapter works, as long as I keep the display switched off during charging.
Hey my Old Samsung phone's charger 0.55A(4.75V) works best! charges faster than moto's charger! Bdw switching chargers isn't good for Batt life i read this sumwhere....
use moto charger!
It's the max output the charger can sustain. Just like the specification on electrical socket, fuse, cable etc. So it doesn't matter as long as it is not exceeded.
It works with SonyEricsson charger but not the one for HTCLegend
I have not experienced any problems with charging from a variety of adaptors. However I do have a couple of the portable li-on battery backs, they seem to have enough juice to recharge/power PSP and DSLite, but can't supply enough current to charge Defy or my San Francisco.
Does anyone know of any reasonably priced portable power packs that can do the job?
On my defy I've used my gf's HTC Desire charger (1A), and it was all good, no hypersensitivity. But I remember I bought a cheap no-name charger for my itouch and when I was charging it, there were similar issues you said.
i'm using my nokia E66 data cable in lieu of my motorola cable to charge my phone. no issues
rogier666 said:
My Defy is extremely picky when it comes to charging.
I tried a few different power adapters. All run at the standard 5V used by all USB ports. The only variable is the current.
The power adapter shipped with my Defy spits out 850 mA and apparently my phone doesn't like to eat any other current. With a 500 mA adapter my Defy won't charge at all. That's strange, because it charges fine when connected to my computer, and those USB ports max at 500. At 1000 mA my Defy charges OK, but the screen becomes hypersensitive. Just moving my fingers within 10 cm from the screen is enough to scroll, make icons believe they're tapped, and make the phone do all kinds of random stuff. Spooky!
My other phones all charge fine at 500 mA, 800 mA (default Nokia charger current), 850 mA, and 1000 mA. They don't seem to care about the current at all. Same for my camera with a microUSB port. Any current from 500 to 1000 mA works. Only my Motorola Defy is playing difficult and insists on 850, not more and not less.
Does this mean that there's something wrong with my Defy or is this deliberate sabotage by Motorola to stop us from using competing power adapters?
Click to expand...
Click to collapse
I have a similar problem as you.
I think the Defy only charges with 500 mA to maybe 1000 mA. I can charge my Defy with any PC and Tablet USB ports, a Nokia AC charger and a couple of car USBs with 1A output. However, it won't charge with 2 other car USBs with 2A output. I measured the voltage of these two and they are good, at around 5.2 to 5.3V.
I was hoping to find a higher capacity car charger because I am using my Defy as car camcorder, and 1A simply cannot supply the current needed!
My defy can be charged with an htc 1A charger as well as a 500mA samsung charger. But it refuse to charge from no name cheapos.
Sent from my MB525 using Tapatalk
Tried a new adapter, made by Sony Ericsson. 5.0V, 850mA, exactly the same output as Motorola's own power adapter. But the SE adapter has the same problem as the no name adapters I tried: they charge my phone, but I need to keep the screen locked 'cos the adapter makes it hypersensitive.
So it must be my phone. For some strange reason it doesn't like it when I use any other adapter than the one that came with the phone.
I wonder if its refusal to work with non-Motorola adapters is a reason to get my Defy fixed under warranty...
The problem you guys are facing is not related to the current, but to the pins used by the cable in the USB interface.
The defy will only charge if it is connected with a full USB connection.
Not all the USB cables come with all the pins, I for example have one for my Bluetooth headphones that only has power and it does not charge my defy but it does charge my hd2.
Gesendet von meinem CM7 Defy
The problem persists when I use the Motorola cable with a non-Motorola adapter.
When I use the Motorola charger adapter together with non-Motorola USB cables my phone charges OK.
So the problem has nothing to do with cables and pins.
rogier666 said:
The problem persists when I use the Motorola cable with a non-Motorola adapter.
When I use the Motorola charger adapter together with non-Motorola USB cables my phone charges OK.
So the problem has nothing to do with cables and pins.
Click to expand...
Click to collapse
It has to do with cables and pins.
If your cable has all the pins (normal data USB cable) but your adapter doesnt have them connected is the same thing as having a USB cable with only power pins.
Check out cables diagrams to see how them work.
There is even a hack for some HTC phones, where you actually short some pins on the cable so the phone think it is connected to a wall charger and not a USB port, allowing the phone to use more than the 500 mah the USB can provide (useful for car adapters).
This is fact, I'm not pulling it out of anywhere hehe
I charge both my Defy and the HD2 with the same HTC charger, and I have a extra USB portable battery, which charges the HTC but it doesnt charge the Defy, both are running CM7.... the issue? the danged chinese battery only has power pins and the phone refuses to charge from it @[email protected] it does charge my Bluetooth Headphones and the Camera
My non-Moto 1000 mA and 850 mA adapters make my screen go wild, but they charge my Motorola Defy.
If it was a cable/pin issue they wouldn't charge my phone at all.
If I plug my knockoff 500 mA adapter in my Nokia USB port (which is for data only, not for charging) my old Nokia pops up a "USB data connection detected" message.
Not all charger issues are due to cables and pins. Sometimes its the output voltage and current that messes things up.
rogier666 said:
My non-Moto 1000 mA and 850 mA adapters make my screen go wild, but they charge my Motorola Defy.
If it was a cable/pin issue they wouldn't charge my phone at all.
If I plug my knockoff 500 mA adapter in my Nokia USB port (which is for data only, not for charging) my old Nokia pops up a "USB data connection detected" message.
Not all charger issues are due to cables and pins. Sometimes its the output voltage and current that messes things up.
Click to expand...
Click to collapse
I know not all issues are related to the cable and pins, but this specific issue with the Defy not charging is.
Both your chargers comply correctly with USB charging standards then.
Notice this also happens on the Droid, and shorting both Data pins allows the phone to charge. And can be read on the forums that it works too with the iPad
Anyways, here is what happens to the defy:
http://en.wikipedia.org/wiki/Universal_Serial_Bus
"There are also devices at the host end that do not support negotiation, such as battery packs that can power USB-powered devices; some provide power [...]. USB power adapters convert utility power [...] to run attached devices. Some of these devices can supply up to 1 A of current. Without negotiation, the powered USB device is unable to inquire if it is allowed to draw 100 mA, 500 mA, or 1 A."
There you go, no Data pins = Defy do not draw power, not charging.
I would like know if it charges shorting Data pins tho.
All that is required is short both Data pins with each other, doesnt matter if its on the cable or the charger.
Hi,
Just as the title says, but does the transformer charge via the usb 3.0 ports on some modern motherboards?
Or will it only charge in sleep from those as well. I seem to remember reading that usb 3 had a larger power output, but I cant be sure.
It seems to get a little juice from my GA-EP45T-USB3P - but just a little bit.
-bZj
It should charge at about the same speed as a USB port. The only reason ASUS uses a USB 3.0 cable is so that the AC adapter can deliver 15 (instead of the usual 5v USB) volts over the extra USB 3.0 pins. USB 3.0 ports can deliver 900mA (vs 500mA on 2.0 ports) but that is probably less than the discharge rate of the TF with the screen on.
The Note 3 is the first phone to come with USB 3.0 support, the cable and connector are up to spec.
What I'm wondering if this helps with the charging speed, as the wall charger doesn't seem to be with a USB 3.0 connector.
Does anyone have any insight to this?
Sent from my SM-N9005 using Tapatalk
The wall charger has a 2Ah power output while a pc usb 3.0 port has a maximum output of 900mAh. If you use an USB 2.0 port it's only 500mAh.
The best way to recharge the Note 3 is to use the wall charger.
s1m4an said:
The Note 3 is the first phone to come with USB 3.0 support, the cable and connector are up to spec.
What I'm wondering if this helps with the charging speed, as the wall charger doesn't seem to be with a USB 3.0 connector.
Does anyone have any insight to this?
Click to expand...
Click to collapse
From a dedicated charger the final charging current is normally determined by the PHONE + CHARGER based on how the phone "recognizes" the charger as good/bad (and what battery level you already have + how warm the battery is) and how much power the charger can provide. I believe the max that I have seen on my Note 3 was 1800 mA (which worked with both USB3 cables but also with some good USB2 cables).
From a PC the charging current is the result of a more complex negotiation, the phone can still have "the last word" but it can not go over 500 mA on USB2 or 900 mA on USB3.
Somehow related - please note that on USB3 DATA you STILL need to MANUALLY enable USB3 mode EVERY TIME YOU PLUG TO THE PC. Even if enabled the mode will be reset to USB2 in 10 minutes and lost if you remove and plug-in again. That being said on my Thinkpad I have not seen it charging over 450 mA even when on USB3 under Win7 (but the speed difference exists, so USB3 is correctly triggered).
Also please note that the life of the battery can be heavily influenced by the charging current - the smaller the charging current the more cycles the battery will last on the very long term. Also high temperatures are pretty bad for the battery. So if you are in no hurry it is always better to charge with a small USB2 current that is guaranteed to not go over 500 mA.
Maybe I wasn't clear enough, I'm wondering if the wall charger is utilizing the USB 3.0 capability, and if there's any advantage of using the USB 3 cable over a regular micro USB cable.
Sent from my SM-N9005 using Tapatalk
No, there is not. The Note 3 has a USB 3.0 port, but it is only faster for data transfer. Charging is done at 2.0 speed, not 3.0. Regardless of what you attach it to, it charges just as fast as a 2.0 device.
TheBeast1981 said:
The wall charger has a 2Ah power output while a pc usb 3.0 port has a maximum output of 900mAh. If you use an USB 2.0 port it's only 500mAh.
The best way to recharge the Note 3 is to use the wall charger.
Click to expand...
Click to collapse
What if you used a USB 2.0 cable with the 2Ah AC adapter? Would it still charge in "USB 3.0" mode and not give you a message to use a USB 3.0 cable?
I have my old 1Ah car charger and when I use a USB 2.0 cable, the phone says to use the USB 3.0 cable for faster charging.
But, looking at this pinout:
http://commons.wikimedia.org/wiki/File:USB_3.0_Micro_B_plug.PNG
It seems like only the USB 2.0 section is providing the power?
It's utterly confusing. Would be nice if someone who really knows this stuff explain how it works?
---------- Post added at 09:58 AM ---------- Previous post was at 09:56 AM ----------
ShadowLea said:
No, there is not. The Note 3 has a USB 3.0 port, but it is only faster for data transfer. Charging is done at 2.0 speed, not 3.0. Regardless of what you attach it to, it charges just as fast as a 2.0 device.
Click to expand...
Click to collapse
What's strange is that I have a car charger that is 1.0Ah. When I use a USB 2.0 cable, the phone tells me to use a USB 3.0 cable for faster charging.
When I use a USB 3.0 cable, the message does not appear.
But I'm thinking that the car charger can only put out 1.0Ah regardless of the cable that is used?
Wanted to ask before I consider returning the charger I got
I tested this car charger
https://www.amazon.com/gp/product/B01E764DXM
Using this
https://www.amazon.com/gp/product/B01MT8MC3N
Results were
Using USB A to USB C cable - screen off 8.98v/1A-1.67A(amps varied during the 100mA test I did) - phone read Fast Charging
Using a USB C to USB C cable plugged into the USB C port - screen off 5v/1.8A steady (zero fluctuation) - phone read Cable Charging
Now the charger says it is capable of 5v/3A output out of the USB C port but that's not what I'm getting to the S8, which makes me wonder if it's a limit placed by Samsung software to not go for higher Amperage (and therefore more wattage)
When I look at the estimated charging times, the QC (USB A- USB C) is usually 10 min faster than the USB C charging
9x1.67 is the max the phone supports, on 5v you might get 2a tops, looks like the usb-c port on that charger doesn't support 9v for some reason.
Has anyone found and tried USB-C cables that support high-power 5a and for sale in the USA? https://www.startech.com/ca/Cables/usb-c/usb-c-usb-3-1-cable-power-delivery~USB31C5C1M