Develop Bugs

[Q] Non-HTC/Sprint Chargers OK?

So I have a few car and home chargers laying around that are Micro USB, just like the EVO. Is it safe to use them? I would think so since all the charging circuitry is internal to the phone. But, I figure i would double check.
Also, are there certain micro USB > Std USB cords that are designed for charging and data VS data only?

I use a Rocketfish (Best Buy) car charger in my truck and sometimes use my wife's Blackberry 9800 wall charger or USB cable and haven't had a problem at all. I remember this was a huge problem with my old Pre but I don't know if the EVO has the same issue.

I have been usin my old Blackberry's one and works perfect!

Just check the MilliAmps rating. The EVO uses some healthy juice to charge it. Most chargers will charge it slowly as generics are typically in the 500-700mA range. But they are typically safe, I use them sometimes.

Thanks for the info. I will check out the LG home and car chargers I have left over and see what they are capable of.

I use the chargers from my old LG verizon phone. They charge very fast so obviously they have enough juice. And they don't make a humming noise when at full charge like the htc oem ones that came with my evos.
Posted from my Atari 2600

I have a pointmobl car charger I bought from Radio Shack when I got the phone and I use a USB travel charger from my old Razr VE20 in my bedroom, both work great. The Razr charger is about 700mA I think, so it charges a bit slower but it still works fine. My car charger is 1A so it charges on that pretty quickly.

My EVO is quite the slut when it comes to chargers: I like it! My old HTC Universal was PI-CKY about chargers! Pretty much had to rely on a USB cable and a device.
The 500ma charger I bout with the phone back in June died a few months ago, so I think you can't expect to cheat THAT much. I have tested 4 different car chargers and they all work (rocketfish, verizon, and 2 no-name brands).

Mindspin_311 said:
So I have a few car and home chargers laying around that are Micro USB, just like the EVO. Is it safe to use them? I would think so since all the charging circuitry is internal to the phone. But, I figure i would double check.
Also, are there certain micro USB > Std USB cords that are designed for charging and data VS data only?
Click to expand...
Click to collapse
I've never heard of a cord that was data only. Never seen one either.
Sent from my (insert daily ROM name here) Evo 4g

They are OK but watch the amperage. The HTC one is the only one providing a full 1A. Most other ones are 250-500mAh and I've seen as low as 125mAh. That means 8 times longer to charge.
I tried buying a no-name Chinese/HK 1A charger off eBay and it ended up freezing my phone anytime it was plugged in (and resuming like nothing happened when taken out.) Weirdest thing ever since I'm not sure how a charger could affect the phone that way, but be careful.
The cheapest I've seen for the official HTC one is here: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150574209506
Looks legit and hopefully it's not a knockoff.

[Q] GT-N7100 : Picky about charger/cable.

Hello,
I just changed my nexus one to a galaxy note 2 and I noticed that the note seem to be much more picky about chargers and microUSB cables, even over USB.
Here is what I did :
1 - Nexus one charger (1A) : went to about 30% charge then it started doing charge/discharge cycles. Like if I plugged and unplugged the charger every second.
2 - Original charger / original cable : no problem, fast
3 - Original charger / Nexus one cable : no problem, fast
4 - Original charger / cheap long cable from eBay : charge level couldn't exceed 40%.
5 - USB port / Nexus one cable : no problem
6 - USB port / cheap long cable from eBay : phone said "charging" but didn't charge
7 - USB port / cheap short cable from eBay : phone said "charging" but didn't charge
8 - DIY charger (made by soldering a micro USB plug to a 2A/5V wall wart) : no problem, fast
Did any one of you experienced the same problem ? Never had any problem with the Nexus One.
Well, I think that the obvious conclusion should be "don't use cheap knockoff cables and use a correctly rated charger", but I still want to understand the problem. Are there differences between cables ? And if it is just a power rating, why is USB (slow) charging a problem ?
Thank you.

No problems here with an HTC Desire charger and cable, works well with full recharge.

The phone just cannot get enough current from a cheap cable. It only gets maybe about 300mA, which is barely enough to keep the device alive.
This means it's 'charging' while at the same time the battery juice decreases.
This also means the battery sometimes cannot get a full charge.
Nothing picky about this.
So what you have to do is: Use a 2amp charger with a good quality cable which can handle 2amp.

I also use HTC Desire charger + cable. The charger is rated at 1A but it can charge my N7105 at around 1.5A, though the charger is a bit warm. I use the htc charger all the time at home and no problem at all.
Some USB cables are inferior to others for charging, even though they transfer data with no speed loss. I have a cheap USB cable which can only charge my N7105 at ~450ma with the original samsung charger (2A output) and barely charge at all when plugged into a PC.

Where do you find a quality USB cable that's able to charge the note sufficiently

Mine charges only when I stick it directly to the wall. Never tested another charger, though.

My Note I charging cartridge and chips got damaged i was told because the charger I was using from Best Buy's (2.1) extended end to it was too long. Actually the whole charging mechanism got screwed up... Whole device wouldnt get or hold a charge worth crap despite fixing the charging 'cartridge'...forget what its called.
So actually charging cables sure are NOT universal.
GNote2's extended end is moderate in length, not long etc. Im temptedto buy another one from Sammy and only use it.

gub said:
Hello,
I just changed my nexus one to a galaxy note 2 and I noticed that the note seem to be much more picky about chargers and microUSB cables, even over USB.
Did any one of you experienced the same problem ? Never had any problem with the Nexus One.
Well, I think that the obvious conclusion should be "don't use cheap knockoff cables and use a correctly rated charger", but I still want to understand the problem. Are there differences between cables ? And if it is just a power rating, why is USB (slow) charging a problem ?
Thank you.
Click to expand...
Click to collapse
I've have this issue with loads of cables, not all USB cables are equal cheaper and longer the cable the more interference and other crappyness you will get. Same reason you should ideally use the sammy cable rather than a cheap one while flashing roms. much less likely to fail.
---------- Post added at 05:56 PM ---------- Previous post was at 05:54 PM ----------
rockky said:
My Note I charging cartridge and chips got damaged i was told because the charger I was using from Best Buy's (2.1) extended end to it was too long. Actually the whole charging mechanism got screwed up... Whole device wouldnt get or hold a charge worth crap despite fixing the charging 'cartridge'...forget what its called.
So actually charging cables sure are NOT universal.
GNote2's extended end is moderate in length, not long etc. Im temptedto buy another one from Sammy and only use it.
Click to expand...
Click to collapse
I believe the longer the cable the more phase is introduced which can short the charging circuits, but I'm not an electrical engineer so don't take my word for that I just remember a grey beard telling me about it many years ago.

Car Charger

Anyone find one that works well? I got a Cellet retractable micro use charger last week, and it charges my Motorola Electrify M just fine as well as my Gen 1 N7. No dice on the N7 FHD.
Ideas?
Sent from my Nexus 7 (2013)

dbeth said:
Anyone find one that works well? I got a Cellet retractable micro use charger last week, and it charges my Motorola Electrify M just fine as well as my Gen 1 N7. No dice on the N7 FHD.
Ideas?
Sent from my Nexus 7 (2013)
Click to expand...
Click to collapse
Sorry no answer, looking for one as well, I am looking for a car charger that will have a dual port to charge, one for the Nexus 4 and one for the Nexus 7 FHD, and recommendations would be great
thanks

car charger
arimus said:
Sorry no answer, looking for one as well, I am looking for a car charger that will have a dual port to charge, one for the Nexus 4 and one for the Nexus 7 FHD, and recommendations would be great
thanks
Click to expand...
Click to collapse
hii well as if you are looking for a car charger you can check out the huge collection of car charger for N7 at Fommy
they have multiple of variety
So just check out once may be you guys get something you have been looking for
Thanks..!!

I just got one of the sea few day ago:
http://www.amazon.com/gp/product/B00B8M4IMK/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1
It has dual USB ports. One is marked Android the other Apple. The apple port if specifically designed for apple devices (iPhone 5, iPad).
Individually each port can do about 2 amps, or 3.6 amps total if both are being used. The Apple port will charger other devices slowly with standard Data sync cables or full speed with a charging only cable (no data).
Basically with a Charging only cable you could charge two device, one at about 2.1 amps max and the other at about 1.5 amps max (3.6 total amps).
I have two dedicated charging only cables coming that I plan to keep with this car charger so I can charge my phone and tablets on to go.

I tried my Nexus 2013 in my dual Sprint car charger that I got from amazon (Technocel MV9MCDUO-SP OEM Sprint Car Charger - Black with USB Port) and I'm getting a really good charge for my Nexus.
I even tested my phone charging in it's USB port while the Nexus was charging on the main cord and both seemed to cahrge jsut fine.
If I just charge my Motorola Photon on the main cord it charges faster than any AC adapter or car charger I've ever used.
I highly recommend it.
I can't post links yet but its $6 on Amazon.. search for... Technocel MV9MCDUO-SP OEM Sprint Car Charger - Black with USB Port
Fommy says its compatibale for the Nexus 7 2013 too but it's $19.95 there.
(Sprint® (OEM) Micro USB Vehicle Power Charger PLUS for Google New Nexus 7
SKU: 89356
Price: $ 19.95)
HTH.

Anyone had any success using a wireless charger in the car?

dannyboy22 said:
Anyone had any success using a wireless charger in the car?
Click to expand...
Click to collapse
I suppose that would work, a 2 amp or 1 amp car charger should power most QI chargers.
Not sure I see the point though, I see two issues:
1. Wireless charging is less efficient and slower (better suited for the desk or night stand).
2. There's a good change the device will move around while driving and not charge if the coils are not aligned properly.
You could try a modify a car mount to hold a wireless charger, but you still would have the slower charging issue, withc may not really be an issue for some.
I have however seen a car mount that holds the phone and has a opening to hold a round QI charger, but wouldn't work for the N7. See here:
http://www.ebay.com/sch/i.html?_odk....XQI+car+charger&_nkw=QI+car+charger&_sacat=0

RojasTKD said:
I suppose that would work, a 2 amp or 1 amp car charger should power most QI chargers.
Not sure I see the point though, I see two issues:
1. Wireless charging is less efficient and slower (better suited for the desk or night stand).
2. There's a good change the device will move around while driving and not charge if the coils are not aligned properly.
You could try a modify a car mount to hold a wireless charger, but you still would have the slower charging issue, withc may not really be an issue for some.
I have however seen a car mount that holds the phone and has a opening to hold a round QI charger, but wouldn't work for the N7. See here:
http://www.ebay.com/sch/i.html?_odk....XQI+car+charger&_nkw=QI+car+charger&_sacat=0
Click to expand...
Click to collapse
What I'm thinking is, taking the back of a slide-in type cover and hardwiring the wireless charger behind it. A slide in type cover should minimize any movement/alignment issues.
Then affixing the entire assembly over my existing NAV screen in the dash with the wireless charger hardwired to the car.
Then, I can slide in/slide out the Nexus as desired, and not have to worry about fiddling around with the Micro USB connector.
I'm not concerned about charging efficiency, more about maintaining power. A 2A charger at 60% efficiency should provide me the 1.35A that the Nexus 7 needs. When needed I can remove it and fully charge it.

[Q] Need Opinion/info on Qmadix 4.4A USB Triple Travel Charging Hub...

So Im in desperate need of at least one more Wall charge for my galaxy note 8.0 and Galaxy S4. The only problem is they're either pretty expensive for the more legit products, or sketchy. I just need the white box part that goes into the wall outlet. SO incredibly embarrassing and frustrating that I can't seem to figure out what it's actually called. In any case, through my searches I found this:
Qmadix 4.4A USB Triple Travel Charging Hub
It allows for three ports, but each port is designated differently. well, okay... two are the same (1A), but ones different (2.4A). I have no clue about electricity, except to know if you don't use the samsung recommended converters it could damage the battery in the long run. Im under the impression that both of my devices require 2.0A. Does this mean only the 2.4A port would work?
Is anyone familiar with this Item Ive listed? Could I use this device to power bot my Galaxy Note 8.0 AND Galaxy S4 at the same time?
It seems like such a great deal and very compact. Can't pass up without at least asking about it.
again, Im asking about the:
Qmadix 4.4A USB Triple Travel Charging Hub

This is what you NEED to get: http://forum.xda-developers.com/showthread.php?t=2608578

vectron said:
This is what you NEED to get: http://forum.xda-developers.com/showthread.php?t=2608578
Click to expand...
Click to collapse
I appreciate the reply. I had actually seen that and immediately fell in love... but I just as quickly wrote it off because of the additional cable thats required to plug it into an outlet. I need something more compact... something with collapsible prongs.
Another one I was looking at is this one iXCC Dual USB 4.2 Amp (20 Watt) SMART High Capacity AC Travel Wall Charger...
Any thought?

Ports listed as 1A might still be able to supply 2A for your phone, but they might be right at the top of their current limiting (thus running warmer). The whole thing about using only Samsung provided charger is just to scare you off so you buy their original overpriced accessories But there is a truth to it as well, when you buy cheap stuff from ebay where they sell 1A rated outputs labeled with 2A and can run into a problem above (overheating, which causes short, which can cause a damage to your phone). Anker is a trusted brand with a decent quality control, RAVPower is good, and I heard of QMadix before as well.
Here is a problem. When you are dealing with wall outlet converters with multiple outputs that carry a lot of heat/power, you are too close to the main electrical outlet. So, I would be careful not too overload these. Maybe using 2 devices plugged in at a time is ok, but NEVER 3 at a time. When you have something like that 40W Anker converter, you are placing it away from the outlet, it exposed to air circulation from every side (cooling it better), and it should have some fuse or internal protection in case of a short. I understand, for convenience you need wall converter that plugs in, but make sure you get a double one, not the triple output one because i would consider those to be not as reliable when you are charging 3 devices at the same time while plugged into a single wall outlet directly.

Anker also make this one: www.amazon.com/Anker®-4-Port-Charger-Travel-Adapter/dp/B00EI8SS4U/ - but I would not load more than 2 ports at a time. Or if you load 3 or 4 ports, make sure it's not overnight when you are sleeping and that all 4 charging devices are not drawing max current

Btw, one quick question... The Anker 40W 5-port USB wall charger... Should I only charge 2 devices at a time with it aswell? or was that referring only to chargers that plug directly into the wall because of the heat issue?

varxtis said:
Btw, one quick question... The Anker 40W 5-port USB wall charger... Should I only charge 2 devices at a time with it aswell? or was that referring only to chargers that plug directly into the wall because of the heat issue?
Click to expand...
Click to collapse
You can use all 5 ports on that one (40W version that doesn't plug into wall outlet directly). That how I do it all the way, mostly using 4 ports at once to charge my Note 2, my Metawatch smartwatch, my mp3/DAP player, and external battery. Sometime also add my wireless headset too

Two port wall charger?

I'm basically looking for something like this:
http://www.amazon.com/Anker®-Dual-P...0&sr=1-1&keywords=anker+two+port+wall+charger
but where both ports will charge Android devices properly. Everything I have found is either a) 1 Android 1 iPhone, like this, b) two iPhone or c) more of a desktop charger and too bulky to fit in a single outlet.
Does anyone have a recommendation for a two-port charger that fits in a single outlet that would charge two Nexus 5s or a Nexus 5 and a Nexus 7 at full speed?

When I search for dual port usb charger on Amazon, there are a lot of results that match your criterias.
Besides this specialized for iPhone or Android is marketing bullcrap.
Tap-a-talked from my Nexus 5

Hatshipuh said:
When I search for dual port usb charger on Amazon, there are a lot of results that match your criterias.
Besides this specialized for iPhone or Android is marketing bullcrap.
Tap-a-talked from my Nexus 5
Click to expand...
Click to collapse
It's not, at all. iPhones expect there to be a voltage across the data pins to determine the maximum power provided by the charger while Android phones expect the data pins to be shorted. If you use an Android phone on an iPhone charger you end up only charging at USB charging speed (500mA) rather than AC speed (up to 1500mA).

raptir said:
I'm basically looking for something like this:
http://www.amazon.com/Anker®-Dual-P...0&sr=1-1&keywords=anker+two+port+wall+charger
but where both ports will charge Android devices properly. Everything I have found is either a) 1 Android 1 iPhone, like this, b) two iPhone or c) more of a desktop charger and too bulky to fit in a single outlet.
Does anyone have a recommendation for a two-port charger that fits in a single outlet that would charge two Nexus 5s or a Nexus 5 and a Nexus 7 at full speed?
Click to expand...
Click to collapse
I bought one on Motorolas website, its like $30, comes with a USB Cable, all OEM made for android devices. I know what you mean about it saying one iphone and one android. This one is OEM so you will be OK.
http://www.motorola.com/us/6W-Dual-...Charger/m-6W-Dual-Port-Universal-Charger.html
http://www.motorola.com/us/accessories-batteries-chargers/Duo-Rapid-Charger/duo-rapid-charger.html

justinisloco said:
I bought one on Motorolas website, its like $30, comes with a USB Cable, all OEM made for android devices. I know what you mean about it saying one iphone and one android. This one is OEM so you will be OK.
http://www.motorola.com/us/6W-Dual-...Charger/m-6W-Dual-Port-Universal-Charger.html
http://www.motorola.com/us/accessories-batteries-chargers/Duo-Rapid-Charger/duo-rapid-charger.html
Click to expand...
Click to collapse
Hm, that looks nice but I'm concerned about the power output. It lists it as a 6W/1.2A charger which would not even be able to charge the Nexus 5 alone at full speed (1.5A) let alone the two together. I would assume that if you have two devices connected you would get 0.6A each?

I just got this one because (finally) it is a charger that doesn't use up multiple sockets in a power strip. The whole charger is the size of the plug:
http://www.amazon.com/gp/product/B0073FCPSK/ref=oh_details_o00_s00_i01?ie=UTF8&psc=1
If you think the apple port won't work well with android devices, you could get one of these gadgets:
http://www.amazon.com/gp/product/B00GC4AJOU/ref=oh_details_o01_s00_i01?ie=UTF8&psc=1