Compatible chargers - Nexus 7 Q&A, Help & Troubleshooting

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?
Click to expand...
Click to collapse
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:
Click to expand...
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

Related

Car Charger

Hi,
I am looking to buy a car charger for HTC Fuze
There are so many listed like at Eforcity and BargainCell
would anyone of them is fine?
Is there a decent place other than those two? Above places are just charging more on shipping than the actual cost of the charger
Thanks
The easiest way would be to swing by an ATT or Verizon store.
I do have several and they are all rated 5 V (rarely you'll find 12V) but use one of these. They are pretty slick because you can charge ALL USB devices and, if you travel, it's a "one-for-all" device (meaning I can charge my headset which has a USB cable, iPod Nano and the phone.
http://www.daydeal.com/product.php?productid=10892
If you travel a lot you may look into one of these as well
http://www.bixnet.com/usbbatterybox.html
There is also one which does both, AC and cig. input to USB output, a little bit bulky though, but I couldn't find the link right now.
how is that compared to this one
http://www.amazon.com/Charger-Generation-Antenna-Booster-Google/dp/B001LP2ME0/
Comparison:
They both charge
The one you listed is cheaper (even incl. shipping)
Not that flexible
I don't know what other USB devices you have to charge, meaning if they have different cables for different devices, I do.
The Last Car Charger You Will ever NEED!
This has worked for me so far....total $19.81 shipped (2 to 3 days)
http://www.amazon.com/s?ie=UTF8&field-zipjids=32931&x=8&y=18&field-keywords=Black%20%26%20Decker%20PI100SB&url=search-alias%3Dwireless-aps
tyguy said:
Comparison:
They both charge
The one you listed is cheaper (even incl. shipping)
Not that flexible
I don't know what other USB devices you have to charge, meaning if they have different cables for different devices, I do.
Click to expand...
Click to collapse
the reason I mentioned that one was I could not find anyone for 5V
all are 12V
in your first post in this thread you mentioned you have all 5V ones
http://www.dealextreme.com/details.dx/sku.13522
i bought 1 of these. works great. has 3 inputs and 1 usb port.
My solution to the car charging problem has been a power inverter. You can charge your phone using your house charger, and plug in other stuff at the same time. The last one I bought even had a couple of USB ports so I can use a standard USB cord to charge various devices. Also handy for plugging in my laptop, dvd, tv, etc.
tyguy said:
Comparison:
They both charge
The one you listed is cheaper (even incl. shipping)
Not that flexible
I don't know what other USB devices you have to charge, meaning if they have different cables for different devices, I do.
Click to expand...
Click to collapse
but the one I mentioned is listed at 12V
will it make a difference?
zenithcoolest said:
but the one I mentioned is listed at 12V
will it make a difference?
Click to expand...
Click to collapse
A car's battery is 12v. So when they say 12v, they are referring to input. It should then regulate that 12v to 5v (USB spec). If you are worried that this one does not have this regulator, spend a few extra dollars and get a better one.
A car charger should have a regulator anyway, because your car's alternator can output up to about 20v. For USB devices, it needs to be regulated to 5v, or damage may occur.
Howler82 said:
A car's battery is 12v. So when they say 12v, they are referring to input. It should then regulate that 12v to 5v (USB spec). If you are worried that this one does not have this regulator, spend a few extra dollars and get a better one.
A car charger should have a regulator anyway, because your car's alternator can output up to about 20v. For USB devices, it needs to be regulated to 5v, or damage may occur.
Click to expand...
Click to collapse
so which one would you recommend buying? thanks
types of usb connectors
Hey guys, tell me please are there two types of USB connectors to TP ?
I mean the one is like a regular mini USB and the other is an asymmetric one ? Because i ordered ones a car charger from ebay and got the one with the mini USB connector although my TP has the second one.
This is the one i think of buying http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250434240310&ssPageName=ADME:X:RTQ:US:1123
TP has a special usb head for multimedia etc, but for charging use, your item would be ok.
have not had a look at your ebay link (at work) will go home to confirm
Old Motorola Car Charger
I use the car charger from my old Motorola Razr. It has a charging light and charges quickly, however, the Razr will not charge from the Fuze home charger...David.
It seems that there is an important issue about car chargers, which isn't mentioned in this thread. The HTC car charger is 2 ampere, where othere chargers (like the one I bought on Ebay) or only 0.5 ampere. This is problem when having heavy load on your Touch Pro. It then actually still drains battery while charging.

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?
Click to expand...
Click to collapse
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.
Click to expand...
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.

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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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...

Any danger in using another device's charger?

I just noticed today, that my HTC phone basically has the same setup. The same charger, then the USB to micro-USB cable. So would it be the same thing to charge with either cable?
I was shuffling with the 2 chargers today.. but if I only need to use one, then that's even better! And I can travel with just 1 charger for my 2 devices too!
Shouldn't be a problem i hardly ever use the correct usb charger for my devices apart from tablets that need the higher power output.
The nexus may not work on the phone charger but the phone should work fine on the nexus charger.
Sent from my Nexus 7 using Tapatalk 2
The Nexus7 charger is 5v 2A, look at the HTC amp output if it is 1A it will take longer to charge the Nexus7, if it can even keep up if the unit is on.
I would use the Nexus7 charger for the phone and tablet if you want to cut down on taking chargers while going on trips.
I use the Nexus7 charger on my ET4 and it goes to full charge pretty quick....lol
Unknown Zone said:
The Nexus7 charger is 5v 2A, look at the HTC amp output if it is 1A it will take longer to charge the Nexus7, if it can even keep up if the unit is on.
I would use the Nexus7 charger for the phone and tablet if you want to cut down on taking chargers while going on trips.
I use the Nexus7 charger on my ET4 and it goes to full charge pretty quick....lol
Click to expand...
Click to collapse
Yeap you are correct, my phone charger is 1A.
Will using Nexus 7's 2A output charger harm my phone? Or will it just charge my phone faster? (which sounds like a great deal btw:laugh
thunder9111 said:
Yeap you are correct, my phone charger is 1A.
Will using Nexus 7's 2A output charger harm my phone? Or will it just charge my phone faster? (which sounds like a great deal btw:laugh
Click to expand...
Click to collapse
Edit: In short..no it won't damage your phone
i use my kfire charger because the cord is longer lol. google skimped on the charger cord it's !!short!!
t_007_v2 said:
i use my kfire charger because the cord is longer lol. google skimped on the charger cord it's !!short!!
Click to expand...
Click to collapse
Another good idea! My HTC's charger cable is longer..
I guess I'll use the Nexus 7's charger with the HTC cable = win
I prefer the Kindle Fire charger or the Playbook or HP touchpad charges took the OEM charger that comes with the Nexus 7
I just got another Playbook charger just for that purpose, it is 6 ft long, much longer than the Nexus charger.
http://forum.xda-developers.com/showthread.php?p=29603728
Sent from my Nexus 7
As long as the charger puts out 5v you'll be fine.
Also, stories on xda suggest not gaming on the n7 on low battery while plugged into a charger other the packaged one.

[Q] Nexus7 charger with other devices?

I just got a Nexus 7 a couple of days ago and of course I thought any USB charger would work. When it didn't charge on the charger I keep plugged in for all purpose charging, I resorted to Google to see what's up. I would love to have a single charger that works for everything. Having looked through many pages of discussion about this I did not see the answer to my question, whether the Nexus 7 charger will charge my other devices, phone, ASUS Transformer, etc, I know that the data pins on this charger are shorted, but does that prevent it from properly charging my phone, for example? Do the data pins being shorted affect it's ability as a general charger?
Especially for travel, having to carry a single charger would be preferred.
I ran into a similar problem with a friend's Nook Color, only there the problem seems to be a proprietary cable. Even in that case we discovered that a good charger (iPAD version) and a standard cable would work, just pretty slowly.
I may have missed the answer in my searching, and if so, please point me in the right direction. Thanks.
ocostich said:
Having looked through many pages of discussion about this I did not see the answer to my question, whether the Nexus 7 charger will charge my other devices, phone, ASUS Transformer, etc..
Click to expand...
Click to collapse
I haven't tried to search, but I have used my Nexus 7 charger to charge my Acer phone and my Logitech K800 keyboard and H600 headset.
I can't remember if I used the cable that came with the charger. I have a stack of micro USB connectors around. I try to bin any that are power only. Useless bit of wire. Maybe that is why things are amiss at your end.
I've charged my friends HTC X One with the Nexus charger. Worked fine.
Haven't even taken the nexus charger out of the box. Been using my Samsung chargers from my SII with no issues. Hope I don't have a problem using the auto charger.
BTW, a search would have led you to this thread.
http://forum.xda-developers.com/showthread.php?t=1823377
Guessing the charger you're trying to use isn't providing edd enough current... The standard charger puts out 2A (2000mA) when standard USB is 500mA and many chargers are 1A... That said no charger/cable combo I've tried has failed to charge (just sometimes it's glacially slow if its a 0.5A/1A charger)

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