Database Users

Charging cable - Is it generic?

I'm in the UK and want to save $20 on the charger
I have a couple of Micro USB wall chargers that i use on my blackberry. They will fit the N1 and plug straight into the wall. Would they be safe to use, to charge my N1. (These charges are rated 750mHA).
I know the N1 will be supplied with a micro USB cable. I also have an IPhone wall socket plug head, the ones where you just put the USB cable into the plug and then it goes into the wall. Are these safe to use too, for charging the N1?
Thanks

the Nexus one connector is standar microUSB and therefore will work with standard microUSB cables and chargers.

So there is no type of resistor or transformer in the official plug head? ... to restrict power. I thought there would be as my blackberry charger has a 750mha rating on it.
I can understand the USB cable will work as its a limited power output from a laptop port. But just wanted to check the official wall outlet plug current isn't being restricted. The last thing i want to do is fry my new N1.
Cheers,

Just plugged mine into my old nokia classic micro usb and it is charging fine

The specs for the wall charger are 5V and 1A.
http://www.htc.com/europe/product/nexusone/specification.html

do what i did. remove the charger from your basket and use the supplied USB with an old htc charger if you have one. If not get one for a few quid from ebay why spend $20 when you can get one for $5 odd from the market/ebay.

I can only speak anecdotally, but I used a Blackberry Storm charger and nothing exploded

this mini, micro, A B stuff is annoying. to clarify for my simple mind, will usb cables that fit into my G1 fit into the N1? or is it a different size?

Last year, Micro USB was decided as the open standard for cell phone chargers, so this should be replacing Mini USB as seen on earlier phones (BlackBerries, G1) in instances where the port isn't.. some.. proprietary crap.
Edit:
j.books said:
this mini, micro, A B stuff is annoying. to clarify for my simple mind, will usb cables that fit into my G1 fit into the N1? or is it a different size?
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No. The G1 used Mini USB, this is Micro USB. The phone comes with a charger and USB (USB-A 2.0 to Micro USB 2.0) cable.

It's not propitary so it will work with any other charger.

It's a funny thing to find. It's too new to be widely available
I went looking for a car charger and a straight USB A->Micro B cable. The former I found by poking in all the packages for different phones until I found it (found a Samsung charger that uses it, although they did want nearly £30 for the damned thing). The USB A->Micro B I drew a blank - the more clueless salesmen tried to convince me that I was mistaken and I meant Mini!
I thought the blackberry used them but I looked in the pile of blackberry cables the local shops had and they were all mini. Even my local electronics store has every kind of USB imaginable *except* micro.
Edit: Found one! (might be useful for UK users). It's out of stock though... http://www.cableuniverse.co.uk/catalog/cables/USB-A-to-Micro-USB-B-Cable.html

Just so you guys know, not all micro USB's are the same. I bought a car charger from a local Tmo store last week (I forget what phones it was for), and although it "worked" when the plug was perfectly perpendicular to the phone, it had quite a bit of lateral play (which the OEM plug does not), meaning anytime it moved in the car, it would stop charging.
I returned it, and am now just waiting for HTC to decide to manufacture accessories for this ever increasing bundle of worry...

I am using a TomTom charger for my N1, also the HTC hero and the Motorola Droid chargers works to charge my N1.

SANTilt said:
Just so you guys know, not all micro USB's are the same. I bought a car charger from a local Tmo store last week (I forget what phones it was for), and although it "worked" when the plug was perfectly perpendicular to the phone, it had quite a bit of lateral play (which the OEM plug does not), meaning anytime it moved in the car, it would stop charging.
I returned it, and am now just waiting for HTC to decide to manufacture accessories for this ever increasing bundle of worry...
Click to expand...
Click to collapse
Seems like it was just a poor quality charger. If it's a micro USB, it should be built to specific specifications. I already bought a few chargers (including a car charger) and cables (for work, home and travel), and they all work perfectly. Technically ALL micro USBs should be the same, unless the manufacturer didn't follow the standards.

TaFFeR said:
Seems like it was just a poor quality charger. If it's a micro USB, it should be built to specific specifications. I already bought a few chargers (including a car charger) and cables (for work, home and travel), and they all work perfectly. Technically ALL micro USBs should be the same, unless the manufacturer didn't follow the standards.
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Click to collapse
Hah, just my luck; I pick up the one out of spec micro USB charger in the entire city!
Although, it must be that particular T-Mobile supplier, as I went to another store and test fitted the same charger, and it had excessive wiggle as well. Either that or my phone is just lame...

I just got a universal charger in Tesco for £5 that has changeable heads (Micro, Mini, Samsung, Sony Ericsson and Nokia 2mm)
Works perfect

- The cable is standard USB. You can use it to charge the phone from your PC, or use another micro USB cable or charger you have
- The Nexus comes with a US 2 pin charger that is dual voltage - works in UK and US. Just spend 50p and get a US to UK convertor plug.
- The charger is rates 5v 1A, so if you have another microUSB charger with the same voltage use that.
I find charging from the charger results in more battery life than USB. The only explanation is charge rate because USB is 500mA and the charger is 1000mA
PS. I removed the UK charger from the order too. You get the US charger regardless in the box.

Compatible chargers

Anyone else have any experiences they'd like to share using non-OEM chargers?
I use my HP TouchPad charger in my living room, as my HP Touchstone plugs into it usually. It charges the N7 at exactly the same rate as the OEM charger.
Just curious about others' experiences.
Oh....and is anyone else w/the HP TouchPad just completely spoiled regarding tablet prices? $250 seemed like a lot of money to pay, LOL.

http://saraoutlet.com/yxt-023-us-2-...for-apple-ipad-iphone-4g-3gs-white-35561.html
I use this, it charges my iphone, ipad, ipod touch, samsung, and now my nexus. I have one for the car as well that is 1A/2.1A.

the blackberry playbook 1.8a charger works really well. indistinguishable from the supplied OEM. available for $16 bucks or so in retail packaging.

I've used the same charger for my Galaxy SII. Seemed to do the job well and just as quickly!

I have a few blackberry chargers one is a playbook one and some other android chargers.. they all work just fine.

I'd love to know if there are any portable chargers that will charge the Nexus 7 without being plugged into the wall, so, I can charge it when I'm laying in bed or something, I have portable USB chargers that I don't thing would work with the 7 The Duracell Powerhouse USB charger and the Sony Media CP-ELS USB Portable Charger with 2,000 mAh Li-Ion Battery, I use them interchangeably with my iPhone 4S and Playstation Vita.

Okay, I went through my "wall wart" drawer and tried 8 chargers and 9 cables. I can't find any pattern to the results
There was one cable (skinny black generic USB) that didn't work with charger, and one charger (from a Kingston Wi-Drive) that wouldn't work with any cable.
The best cable was a white mini-usb (that I used with a mini-micro dongle) that had come with my generic 5000 mAH backup battery; it worked with *everything* except the Wi-Drive charger. The best chargers were the OEM ASUS charger, and a generic small black cube (1A) labelled "KIN"; those worked with every cable except the skinny black dud.
The worst of the working chargers were an "Innergie" dual laptop/USB power supply, and the generic battery backup. Those only worked with that white cable.
Honorable mentions go to an old Motorola RAZR charger (used with a mini-micro dongle) and a small Samsung phone charger. Those have permanent cables, and both worked.
I couldn't pick up any pattern in terms of amp rating (obviously, the lower amp chargers will take longer). It seems to be "luck of the draw".

I've tried probably 4-5 different chargers including a Motorola wall charger plugged in the wall, and also plugged into a power inverter in my truck, a motorola car charger and an oem wall charger and have no issues with any of them.

iPad 3 charger compatibility
Can anyone confirm if N7 charges using the new iPad 10W charger? Mine only supports the charger that came with it. Does that mean that the usb port is broken and I need to replace it or is it the way all the units behave?

Other XDA threads with similar topic:
http://forum.xda-developers.com/showthread.php?t=1780211
http://forum.xda-developers.com/showthread.php?t=1781680
http://forum.xda-developers.com/showthread.php?t=1784322

dmalovic said:
Can anyone confirm if N7 charges using the new iPad 10W charger? Mine only supports the charger that came with it. Does that mean that the usb port is broken and I need to replace it or is it the way all the units behave?
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It charges using my iPad2 charger, which I think is the same charger as the new iPad?

The Nexus 7 does not show charging when plugged into any of my OEM/aftermarket Apple chargers.
It does not appear to matter whether I use the USB cable supplied by Asus, or a standard commodity micro USB cable.
There is evidence from other users that the tablet may be charging at the 1A rate even though the charge indicator stays off.
I have not personally confirmed this yet.

Im using the charger of my BlackBerry playbook! 5volts 2amp!
From 0% to 100% in less than 3 hours!
Sent from my Nexus 7

I bought 10 of the HP Touchpad chargers for $5 shipped a few weeks ago. They work perfect for the Nexus 7, same plug, 2AH charging..
I think you can still find them for $5 shipped @ hp.com

All my micro USB chargers work , from Nokia to BlackBerry to HTC all fab all charge the n7 OK
Sent from my Nexus 7 using xda premium

martyg7 said:
The Nexus 7 does not show charging when plugged into any of my OEM/aftermarket Apple chargers.
It does not appear to matter whether I use the USB cable supplied by Asus, or a standard commodity micro USB cable.
There is evidence from other users that the tablet may be charging at the 1A rate even though the charge indicator stays off.
I have not personally confirmed this yet.
Click to expand...
Click to collapse
I've had one of those OEM/aftermarket Apple charges blow up on me (not shrapnel, it stayed in the plastic casing), so I wouldn't expect much from those anyway. Have you tried with any standard micro USB phone charger?

Chargers that work:
- Motorola Droid Pro (hard-wired micro USB). Rated at 800 mA but seems to charge almost as fast as the OEM.
- Kin One (Uses any USB cable). Rated at 1A, works with every USB cable I have (almost; there were a couple that didn't work with anything). These are available on-line for less than 10 bucks:
http://www.amazon.com/Sharp-Standard-Wall-Charger-CNR1002/dp/B005IY428Y
http://www.aftermarketcellular.com/ic/CNR1002.html
This is nice and compact; I'm going to order a couple of more to have as spares.
- Motoroloa RAZR (hard-wired mini-USB, used with mini-to-micro adapter). Rated at 500 mA. Works, but probably pretty slow.
- Samsung (from unknown phone; hard-wired micro-USB) rated at 750 mA. Didn't test charge time.
As an aside, I have a 5000 mAh backup battery that I've used with phones and my Nook color (http://www.amazon.com/5000mAh-External-Motorola-Blackberry-Nintendo/dp/B004P8E612). It works with the Nexus, but ONLY with the mini-USB cable that the Power Bank shipped with. Every other cable I've tried chokes. It's intended for an iPhone and puts 6.5V across the power pins (with no load; this is about the same as the Kin) and pulls the data pins to 3.4V. What's weird is that I can connect a 2-conductor (charge only) extension in series with the working cable, so that the data signal never reaches the Nexus. If I use a 2-conductor cable by itself, the Nexus doesn't charge.

tjupille said:
Chargers that work:
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Click to collapse
When you say they work, are they showing as AC charging when you use them or are they just charging.
Go-to battery stats and it will say either
Charging (USB)
Or
Charging (AC)
Sent from my Nexus 7

Compatable car charger
It's really disappointing to know N7 is so picky about chargers. Can anyone report on a working small/short car USB charger that is compatible?

You might want to check that your vehicle can provide 2amps from its cigarette lighter plug. Normal only utility plugs can do that.
Sent from my Nexus 7

Extended USB Cable not charging nexus 7

I tried swapping out the USB cable that came with my nexus 7 with a longer usb cable (still using the same charger though edit: by that, i mean the ASUS charger that came with the N7). It doesn't seem to be charging though, even though it says 'charging' on the screen. When i was using the nexus 7 while plugged in, i actually lost 1% charge after using it for like 30 or so minutes.
I think i grabbed this cable off Ebay. It had no trouble charging my phone. Are there different grades of USB cables or something?

By same charger do you mean the one it came with? The 2 amps charger. Sorry I had to clear that bit up. I think longer cables creates more resistence but I'm not sure if the cable length is significant enough stop charging. I have no idea about grades of USB cables though maybe someone can elaborate on that.

Summerfly said:
By same charger do you mean the one it came with? The 2 amps charger. Sorry I had to clear that bit up. I think longer cables creates more resistence but I'm not sure if the cable length is significant enough stop charging. I have no idea about grades of USB cables though maybe someone can elaborate on that.
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Yes, the ASUS charger it came with, i plugged in the 6 foot microusb cable i bought off ebay into it.

MFister said:
Yes, the ASUS charger it came with, i plugged in the 6 foot microusb cable i bought off ebay into it.
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Okay, 6 foot cable doesn't sound excessively long. I have to ask what were you doing on it while charging and what brightness setting was the screen at. Maybe you were draining more power than the charger can provide?

This is pretty common. The stock cable has larger conductors, as I assume other 2 amp chargers come with, and standard cables are sensed somehow and charging current is limited. Try finding a 22awg cable, I think it will work.

I use a USB extender since I don't have any outlets near my bed. I use a cable rated for USB 2.0 and haven't had any problems. I have had problems with cables that aren't. The Motorola USB cables are rated for 2.0 and they all work fine for me with no problems.

burpootus said:
This is pretty common. The stock cable has larger conductors, as I assume other 2 amp chargers come with, and standard cables are sensed somehow and charging current is limited. Try finding a 22awg cable, I think it will work.
Click to expand...
Click to collapse
Thanks, i assume this cable that's 28/24 awg would work?
http://www.monoprice.com/products/p...=10303&cs_id=1030307&p_id=8643&seq=1&format=2

I use a cable extender, but I insert the original stock cable into the tablet (not the charger). It appears to recognise that and charge at the correct rate.

I've tried using a usb extender to charge with the asus charger and the Asus USB cable and checking with battery graph it charges much slower compared to using just the Asus cable.

People with eyesight better than mine will see that the micro USB socket has 5 pins and the Nexus looks at the 5th pin to decide what is connected and what the connected device is allowed to do. The pin can be grounded, not connected (floating) or can be connected to ground via I think 3 fixed resistances. Google for USB on the go. I think that is the standard adopted by Asus and the cable doesn't comply.

I'm using a nook 1/2 cable I got with a car charger for the nooktablet
It works and is longer then the stock cable it came with.
Sent from my Nexus 7 using Tapatalk 2

EE here. I just ran into this issue recently, so I'll share what I learned. Grab a multimeter and measure the resistance of the cable. Check all 4 pins just in case one of them is worse than another.
In my case, I had a really horrible USB extension cable. It measured about 4 Ohms. 4 Ohms is low enough for a multimeter to pass a continuity test, but do out the math:
V = I * R
V = 2A * 8 Ohms (4 Ohms on VCC, 4 Ohms back on GND)
V = 16V.
16 volts?? Where does 16V come from? Short answer: It doesn't. If 2A were actually flowing, the USB cable would have a 16V drop across it. It doesn't though, which tells us that 2A is not flowing. 1A is also not flowing, since that would still be 8V.
0.5 Ohms is a good estimate for a MAXIMUM resistance for a USB charging cable. That's a 1V drop at 2A, meaning the phone is only getting ~4V. That explains why the USB cable that comes with the Nexus 7 is so darn short - it comes in at around 0.1 Ohms (or perhaps less, that's about the limit of what I can accurately measure)

Wanted to get a longer USB cable that will work the Asus adapter, any links?
Thanks.

came across this thread while investigating a strange thing in charging my 4400mah extended battery of my s3.
I have a 5v 1A stock samsung charger with an extension cable i was always using to charge my old phones with a less capacity battery (mugen 3200mah)
This night i spent i wasnt ble to get a full charge from 5% to 100% in 8 hours and this sounds more than strange, but yet understandable.
i will try timings with the stock cable without extension and i'll come back...

AC charger being detected as usb charger.

Left my phone charging overnight, woke up and it was only at 66%, downloaded ampere and when its plugged in it says usb charger and charges very slowly

Likely the cable... get a good QC compatible cable and it will probably take off. Or it's the charger, without some testing it is hard to be certain.

I had the same exact thing happen with a Turbo Power 25. I noticed a pin was missing in my first one so I bought another one and it said "AC" again. You might need a new charger.

Same problem here...it's not the cable because I have purchased several...I did read somewhere the phone gets hung up in USB mode but there was no solution. Sometimes I have it plugged in and it will die while charging.....

once4skippy said:
Same problem here...it's not the cable because I have purchased several...I did read somewhere the phone gets hung up in USB mode but there was no solution. Sometimes I have it plugged in and it will die while charging.....
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Click to collapse
actually for me it was the cable, ordered a new one from amazon not even OEM, just a qualcom quickcharge 2.0 certified for like 12 bucks and charges normally

I've been using these cables for over a year now... Have probably 10-12 scattered across home, office, laptop bags, and that I have given away.
Eversame Bundle of 2 1.8M 6Ft Premium Nylon Braided Micro USB Cable, USB2.0 A Male to Micro B Data Sync Charger Cable Cord For Samsung Galaxy Grand Prime, HTC One M7, LG V10, Nexus7-Blue Purple https://www.amazon.com/dp/B01GR5PUBK/ref=cm_sw_r_cp_apa_Ty4cybT3CJ40S
That are $8 for two cables. Eversame's custom service is excellent, I had one cable flake out and it was likely my fault, but when I contacted them they sent me two cables to replace the bad one.

[Discussion]Do you know why most of wireless chargers are still micro ports?

Wireless charging has been around for a good few years now, and USB C are also popular for several years. Most of new USB C phones are coming with wireless charging capabilities. But most of popular wireless chargers are still micro ports so far.
Why are most of the wireless chargers still micro ports? It's because of different agreements. As most of QI wireless chargers are Qualcomm QC agreement, while most of USB C chargers use USB-IF Power Delivery agreement. If you use a PD USB C charger to charge a QC agreement wireless charger on a usb c phone, it will cause some incompatibility, overheating and charging instability.
It seems there is no good way to solve these problems now. I'm also expecting to use a better USB C wireless charger without any compatible and overheating issues. Because I almost cannot find any micro cables around me.
Is there any other inconvenience of using a micro wireless charger? When can we change to USB C wireless charging? Let's talk about this topic together.

ekjbkt617013 said:
Wireless charging has been around for a good few years now, and USB C are also popular for several years. Most of new USB C phones are coming with wireless charging capabilities. But most of popular wireless chargers are still micro ports so far.
Why are most of the wireless chargers still micro ports? It's because of different agreements. As most of QI wireless chargers are Qualcomm QC agreement, while most of USB C chargers use USB-IF Power Delivery agreement. If you use a PD USB C charger to charge a QC agreement wireless charger on a usb c phone, it will cause some incompatibility, overheating and charging instability.
It seems there is no good way to solve these problems now. I'm also expecting to use a better USB C wireless charger without any compatible and overheating issues. Because I almost cannot find any micro cables around me.
Is there any other inconvenience of using a micro wireless charger? When can we change to USB C wireless charging? Let's talk about this topic together.
Click to expand...
Click to collapse
Why does it really matter? In my experience, Micro USB cables are cheaper, and much easier to come by. I can walk into a gas station and buy one, but not USB-C.
Also, I have bought 3 wireless chargers since getting my S9. A stand up CHOETECH, the new panda pad they have, and a car mount by Iottie. All 3 have come with a cable. I also have dozens of micro usb cables from old devices.
While USB-C is the future, it's not mainstream. It's only really being offered in higher end devices. Until it's more standard, the cables are slightly more expensive because they aren't being as mass produced.
Is it more convenient? Sure. Will it replace Micro-Usb? Most likely. Until it becomes more standard on electronics as a whole, your likely going to see things like charging pads, Bluetooth headphones, etc still coming with micro usb. It's still the most used standard.
Keep in mind, USB-C is set to replace more than just micro usb. It can be used to replace Hdmi, and I think I read even networking cables (not that most people go wired anymore). It's already replacing power cords in MacBooks. It's truly a one cable to rule them all, but it's got years before it's done away with everything it can replace.

... I'm using the official Samsung wireless convertible charger, with a USB-C port.

The only issue I find with having a micro USB cable on the wireless charger is that you can't simply unplug it and plug it into your USB-c phone when you need to charge faster.

todd3835 said:
Why does it really matter? In my experience, Micro USB cables are cheaper, and much easier to come by. I can walk into a gas station and buy one, but not USB-C.
Also, I have bought 3 wireless chargers since getting my S9. A stand up CHOETECH, the new panda pad they have, and a car mount by Iottie. All 3 have come with a cable. I also have dozens of micro usb cables from old devices.
While USB-C is the future, it's not mainstream. It's only really being offered in higher end devices. Until it's more standard, the cables are slightly more expensive because they aren't being as mass produced.
Is it more convenient? Sure. Will it replace Micro-Usb? Most likely. Until it becomes more standard on electronics as a whole, your likely going to see things like charging pads, Bluetooth headphones, etc still coming with micro usb. It's still the most used standard.
Keep in mind, USB-C is set to replace more than just micro usb. It can be used to replace Hdmi, and I think I read even networking cables (not that most people go wired anymore). It's already replacing power cords in MacBooks. It's truly a one cable to rule them all, but it's got years before it's done away with everything it can replace.
Click to expand...
Click to collapse
:good::good: You're right. USB-C is the future, but it's not mainstream now. We still need Micro cables somewhere.

Cost. It's not a selling point so it's not worth the extra $ to upgrade it to USB type-c. The convenience of type-c is the ability to put it in in any direction. A wireless charger doesn't get plugged back in and unplugged. A manufacturer like Samsung is going to have a huge surplus of type-c so it makes sense for them to use it because there's no point of having different types in stock. But for things you buy on Amazon most of those are made from the same factories in China who I'm sure have millions micro USB in stock. There's just no incentive. Doesn't really benefit anything other than the niche person that wants to plug it in to their phone. Most by 1, plugging in, put it wherever it's going to go like a nightstand and that's where it's going to sit until it dies lol.