Well my Nexus 7 is going back and I just ordered a Galaxy Note 10.1 instead. I keep reading that not all car chargers work properly though, but I also have a Galaxy S3, so might as well look for a dual USB Car Charger.
UPDATE
I read that you can use one of these and use any charger. Still the question remains, what is a reliable charger?
Ebay
dja2k
I'm using this, it will show a red X over the battery when I connect my Note 10.1 to it but it will actually charge the battery anyway (there are a few threads that discuss "Charging over USB" where several Note owners confirm that the tablet actually charges in spite of the red X).
http://www.zagg.com/accessories/usb-dual-car-charger.php
I ordered one of these
http://www.ebay.co.uk/itm/271041001...X:IT&_trksid=p3984.m1497.l2649#ht_2379wt_1163
but haven't tried it yet
Samsung Tabs are pretty finicky about chargers. D+ and D- must be shorted together AND must be held at around 1.2 volts by the charger. (As opposed to merely shorted together for most phones and the N7).
Samsung Tab chargers will charge standard devices, but not the other way around.
You CAN mod iPad chargers by shorting D+ and D- together with a solder blob and removing one pullup resistor. Another option is using a "universal adapter" cable - for examples, search DealExtreme for "P1000" (The Tab 10.1, Tab 2 10.1, Note 10.1, and all original 7" Hummingbird-based Galaxy Tab units use the same chargers.)
Related
I just picked one up at walmart for $16. Its rated at 5v 2.1 amps. So it should work, but it still shows a red x on the tab when charging. I'm probably gonna take it back. Does anybody know of a car charger that plays nice with our Tabs?
Yadao said:
I just picked one up at walmart for $16. Its rated at 5v 2.1 amps. So it should work, but it still shows a red x on the tab when charging. I'm probably gonna take it back. Does anybody know of a car charger that plays nice with our Tabs?
Click to expand...
Click to collapse
Sounds like it is not seeing some sort of required voltage or signal on one of it's pins to tell it to charge at full power. Or maybe it is charging at full power but because of this required voltage or signal the TAB doesn't show it. Someone on the Asus Transformer forum really delved into the Asus connector and found all kinds of interesting stuff like that,
Maybe I'll do some timed charging tests then.
It's probably not outputting enough power. You need 2amp charger like this one:
http://www.amazon.com/Scosche-reVIV...NO4Q/ref=sr_1_3?ie=UTF8&qid=1309665830&sr=8-3
It is a 2 amp charger.
Edit: Its this charger, just sold without the cable.
http://www.amazon.com/Griffin-Technology-PowerJolt-Charger-iPhone/dp/B003GAAQXM/ref=pd_cp_e_1
It's not the amperage - it's the pin configuration. The Samsung chargers have a different pin configuration that tells the tab to start charging. Note that the pin swap happens in the charger unit, not in the data/charging cable so it's not enough to use a stock USB charger with the cable that came with your tab.
You can get adapters off of ebay that turn a regular USB charger into a "Samsung tab charger", you'd plug the adapter into the USB charger then the cable that came with the tab into the adapter and it should start charging.
This thread has more info on the adapters:
http://forum.xda-developers.com/showthread.php?t=1116496
Thanks for the info. It definitely wasn't charging. I had it plugged in for a half hour with no percentage increase. Just returned it.
I don't have the resistors to reproduce my findings but found that there is a residence of 8.28k ohms between ground and both d+ and d-. 8.43k ohms between 5v and both d+ and d-. 0.7 ohms between d+ and d-.
I expect that in these adapters that there are two resisters and a diode.
Can any one verify this?
Sent from my GT-P7510 using XDA Premium App
ericlmccormick said:
I don't have the resistors to reproduce my findings but found that there is a residence of 8.28k ohms between ground and both d+ and d-. 8.43k ohms between 5v and both d+ and d-. 0.7 ohms between d+ and d-.
I expect that in these adapters that there are two resisters and a diode.
Can any one verify this?
Sent from my GT-P7510 using XDA Premium App
Click to expand...
Click to collapse
The Tab fast charges if you short D+ and D-, otherwise it's limited to 500mA.
I tried connecting the pins together, connecting both to ground and both to positive and none of those configurations put it into charge mode. When I test what comes out of my charger, I get 1.248 between the data pins and ground.
Sent from my GT-P7510 using XDA Premium App
ericlmccormick said:
I tried connecting the pins together, connecting both to ground and both to positive and none of those configurations put it into charge mode. When I test what comes out of my charger, I get 1.248 between the data pins and ground.
Click to expand...
Click to collapse
You need to let the d+/d- pins float.
If you let them float, then you get the same red x. Before you said you needed to short them. What are you shorting them to?
Sent from my GT-P7510 using XDA Premium App
ericlmccormick said:
If you let them float, then you get the same red x. Before you said you needed to short them. What are you shorting them to?
Click to expand...
Click to collapse
Sorry, I thought I already tested my Tab with my adapter that seems to work for everything else. Turns out it gives me the red X too. I guess Samsung can't follow a standard (though not as bad as the Transformer's adapter/cable).
The 8.3k or so between both d+/d- and ground and d+/d- and +5V is misleading since we're seeing 1.2V at the data pins. This post implies that it's actually a 33K/10K divider from +5V to ground which makes the 1.2V make sense. I'll try this later tonight if I can find some spare USB connectors.
The 33k/10k spilt did the trick!
Sent from my GT-P7510 using XDA Premium App
See my post here.
Scosche makes Galaxy Tab specific 2.1amp car chargers with 1 and with 2 USB slots. Go here: http://www.scosche.com/consumer-tech/search/ and type USB in the search box on the top of the page. On the resulting page of USB devices you will find the Galaxy specific models.
They make identical models of "generic" USB car chargers which you can find cheap on eBay and just use the SAMSUNG CHARGING ADAPTER to make it work but the Galaxy Specific models are a cleaner install.
MisterEdF said:
Scosche makes Galaxy Tab specific 2.1amp car chargers with 1 and with 2 USB slots. Go here: http://www.scosche.com/consumer-tech/search/ and type USB in the search box on the top of the page. On the resulting page of USB devices you will find the Galaxy specific models.
They make identical models of "generic" USB car chargers which you can find cheap on eBay and just use the SAMSUNG CHARGING ADAPTER to make it work but the Galaxy Specific models are a cleaner install.
Click to expand...
Click to collapse
Good find. I saw those on Amazon, but they seemed expensive, and I couldn't find any info at the time about whether it worked on the 10.1 or just the original Tab. I like the low profile one, but it is only single port. The dual-port looks too large for my setup.
I also got 4x China chargers for the price of one of those. =/
The Scosche iPad chargers such as the reVIVE II for iPad can be modified. Mine's in the car so I can't provide the exact resistor location or pictures, however:
If you open the reVIVE II and you look at the board with the plug portion to the left and the USB jacks to the right:
The upper USB jack is the 2.1A port. You need to perform the following mods to make it charge the tab:
Take D+ and D- and short them together. Solder blob will do this.
At this point instead of having 2.0v on one pin and 2.8v on the other (Resistors used for telling Apple iDevices to charge at 1A+), you will have 2.4v on both pins.
On the upper edge of the board there will be three resistors. The rightmost one is the current limiter for the power LED. (It should have a trace going to the LED)
The next one is part of the voltage dividers for one of the USB pins. Specifically, the voltage divider that originally generated 2.8v. Remove this resistor. I believe it has "62C" printed on it. Remove it - it'll be a pain in the ass. Tiny part, lead-free solder with ridiculously high melting temp.
At this point, if you reassemble the charger, you should see around 1.2-1.24 volts on D+ and D-. Congratulations, you now have a Galaxy Tab car charger.
flarbear said:
You can get adapters off of ebay that turn a regular USB charger into a "Samsung tab charger", you'd plug the adapter into the USB charger then the cable that came with the tab into the adapter and it should start charging.
Click to expand...
Click to collapse
THANKS!!! I was wondering why my 2.1A USB car charger wasn't working. Well, now I know and hopefully this adapter plug that I just ordered off of ebay will do the trick.
I bought this USB car charger. It's 1 amp. But it doesn't work with my Galaxy SII. The phone alternates rapidly between charging and discharging. Anybody know why? I've tried 4 different USB cables.
It shouldn't go between charging and discharging unless its faulty or somethings loose. As far as whether or not the phone will draw 1 amp from it you would need to either put a multi meter and test for continuity between the two data pins or open it up and look with your eyes.
I personally tried and succeeded with a dollar store unit which is trace shorted on the circuit to make the phone think it is Samsung as its designed to.
Short the two middle pins
Sent from my Samsung Galaxy SII using Tapatalk 2 Beta 5
Could anyone check the current rating of the supplied charger?
My Note should be arriving soon from the UK - although I could use an international plug converter, I don't really like the idea.
On the other hand I have a Belkin charger for my iPhone for 0.5A. Do you think this is enough?
Thx.
No. The original charger has an output 2 A at 5 V. And even with 2 A the Note 10.1 is only slowly charging.
The charger is rated 2A.
In addition, it uses a nonstandard method for "dumb charger" detection. If you connect an iPad charger or a standard 2A charger, it will not be detected.
The device needs to see D+ and D- shorted together AND floating at around 1.2 volts to charge. Same rules as all other Samsung tablets.
It is possible to find special Samsung Tablet charging adapters that will let it be used with iPad 2A chargers - here's an example of a DIY one - http://forum.xda-developers.com/showthread.php?t=1675042
http://www.dealextreme.com/p/usb-power-adapter-for-samsung-p1000-81753?item=2 or
http://www.dealextreme.com/p/usb-data-charging-extension-cable-for-samsung-p1000-black-91141?item=4
will work - if those links break, just search for "P1000" on dealextreme - The charger standard and detection mechanism are common for all known Galaxy Tab models.
I'm using the same ones I had for the 7.0+ and 7.7 and they're charging the 10.1 just fine. Looks like .35A (old eyes here)!
The Tab 10.1 charger should work, right?
http://www.mobicity.com.au/samsung-travel-adapter-for-galaxy-tab-10-1.html#tabContainer
oznick said:
The Tab 10.1 charger should work, right?
http://www.mobicity.com.au/samsung-travel-adapter-for-galaxy-tab-10-1.html#tabContainer
Click to expand...
Click to collapse
I am also interested in this cause I bought a 10.1 note and I lost my charger
oznick said:
The Tab 10.1 charger should work, right?
http://www.mobicity.com.au/samsung-travel-adapter-for-galaxy-tab-10-1.html#tabContainer
Click to expand...
Click to collapse
Tab 10.1 chargers will work. In fact I haven't even pulled my original charger out of the box, using the Tab 10.1 charger I already have.
Entropy512 said:
The charger is rated 2A.
In addition, it uses a nonstandard method for "dumb charger" detection. If you connect an iPad charger or a standard 2A charger, it will not be detected.
The device needs to see D+ and D- shorted together AND floating at around 1.2 volts to charge. Same rules as all other Samsung tablets.
It is possible to find special Samsung Tablet charging adapters that will let it be used with iPad 2A chargers - here's an example of a DIY one - http://forum.xda-developers.com/showthread.php?t=1675042
http://www.dealextreme.com/p/usb-power-adapter-for-samsung-p1000-81753?item=2 or
http://www.dealextreme.com/p/usb-data-charging-extension-cable-for-samsung-p1000-black-91141?item=4
will work - if those links break, just search for "P1000" on dealextreme - The charger standard and detection mechanism are common for all known Galaxy Tab models.
Click to expand...
Click to collapse
My Note won't charge from an iPad charger but it has no trouble charging from an inexpensive PowerGen charger with the original Samsung cable or a cheap copycat cable.
Haidozo said:
My Note won't charge from an iPad charger but it has no trouble charging from an inexpensive PowerGen charger with the original Samsung cable or a cheap copycat cable.
Click to expand...
Click to collapse
I guess apple and samsung are real bussiness enemies
But, it's still better to use the original charger. And yes correct, with the 2A output rated, the note also slowly charge. Different from the N7000, which is quite fast to charge.
Can anyone link me to an identical charger to that which came out of the box that I can buy? Need to return my Note 10.1 but I have lost my cord.
Edit: Or one that at least looks identical.
Here's a good deal on the OEM charger. Be careful on eBay and Amazon, a lot of what's sold there are knock-offs.
http://www.all4cellular.com/product/samsung-galaxy-tab-wall-charger.html
And the 5V car charger too...
http://www.all4cellular.com/product/samsung-galaxy-tab-vehicle-power-adapter-w-detachable-cable.html
Check amazon.com for Samsung galaxy note 10.1 accessories.
BarryH_GEG said:
Here's a good deal on the OEM charger. Be careful on eBay and Amazon, a lot of what's sold there are knock-offs.
http://www.all4cellular.com/product/samsung-galaxy-tab-wall-charger.html
And the 5V car charger too...
http://www.all4cellular.com/product/samsung-galaxy-tab-vehicle-power-adapter-w-detachable-cable.html
Click to expand...
Click to collapse
I may pull the trigger on one of these. However, it is disconcerting to see a review of a cord that is also marketed as a a Galaxy Tab cord being reported by a reviewer on amazon as not fitting or charging.
Here's that cable:
http://www.amazon.com/Samsung-Galax...P0UBEGSTA/dp/B004DBD4TG/ref=cm_srch_res_rtr_1
Do you have personal experience with this cord from all4cellular fitting/charging your note 10.1 device?
mt6272 said:
I may pull the trigger on one of these. However, it is disconcerting to see a review of a cord that is also marketed as a a Galaxy Tab cord being reported by a reviewer on amazon as not fitting or charging.
Do you have personal experience with this cord from all4cellular fitting/charging your note 10.1 device?
Click to expand...
Click to collapse
The cord on Amazon's probably a knock-off. Yes, I've bought from all4cellular before. I've also gotten burned a couple of times on Amazon and eBay. E-mail them and confirm what's listed on their website is a genuine Samsung product. It may be shipped in a cellophane package vs. retail packaging but that won't matter as long as it’s OEM.
Can u use a 12v charger to charge n10.1 faster?
Sent from my GT-N8013 using Tapatalk
smrsxn said:
Can u use a 12v charger to charge n10.1 faster?
Sent from my GT-N8013 using Tapatalk
Click to expand...
Click to collapse
If you wish to burn your GN 10.1, yes. Otherwise, for your safety, no.
There are plenty of car chargers on eBay for the Note & Tab 10.1.
There is a brand called Pleomax, which is another brand name of Samsung accessories out of Korea.
You can also get a Samsung Note 10.1 charger (which is really the same as the Tab) for about 18.00 and plus 3.50 for shipping.
See eBay Item number: 160865117877. This is the one I just purchased.
The Note and Tab chargers are all 12v and 2a rated.
globalgpj said:
The Note and Tab chargers are all 12v and 2a rated.
Click to expand...
Click to collapse
No... They are not. 5 volts output at up to 2A, not 12 volts.
Car chargers accept 12 volt INPUT, but the OUTPUT (to the Tab/Note) is 5v.
12v will fry the Tab/Note. The Note and Tab use a more standard charger detection algorithm than Asus Transformers (which actually have 12v charging...)
Entropy512 said:
No... They are not. 5 volts output at up to 2A, not 12 volts.
Car chargers accept 12 volt INPUT, but the OUTPUT (to the Tab/Note) is 5v.
12v will fry the Tab/Note. The Note and Tab use a more standard charger detection algorithm than Asus Transformers (which actually have 12v charging...)
Click to expand...
Click to collapse
Correct. 5v output. I guess I didn't express that clearly.
Sent from my GT-N8000 using xda premium
If you buy this Pleomax charger http://www.ebay.com/itm/OEM-GENUINE...210563?pt=PDA_Accessories&hash=item1e70f65483 can I use it to charge my Samsung Galaxy S3 as well or will the 2a output be a problem? or Do I need one of these http://www.amazon.com/ReVIVE-DualFL...7410690&sr=8-3&keywords=note+10.1+car+charger
dja2k
Anker sent me their 5 port USB charger to try out and I have to say I love it.
There are a ton of great reviews on Amazon so I'll just get to a couple of points not already mentioned.
First off, while there are "5 ports designed to charge the iPad (2 x 2.1A), iPhone (1A), Samsung Tab (1.3A), and Android devices (1A) at full speed", these ports are interchangeable. I tend to use the ipad ports to charge my Samsung galaxy tab 3 8.0 and Galaxy Note 2, use the Samsung tab port to charge my ipod touch and the Android port to charge my Bose bluetooth headset. I find this combo produces the quickest charge for all my devices. In fact, this one charger charges all four devices slightly faster than if I use the original chargers that came with the devices.
I have several retractable usb cords I just keep plugged into the charger and when I need a charge I just pull out the appropriate cable and am good to go. WAY less clutter on my desk vs using all the original chargers and it only occupies one outlet in my power strip - this is a HUGE plus!
The only gripe I have is I wish it came with some sort of stand or base to put it on to prevent it from tipping. I do tend to knock it over but I just don't want to lay it on it's side, looks good standing upright and takes up less desk space.
I am a pretty big fan of Anker products, I've bought many of their batteries and a couple of their 2 port wall chargers. All have performed wonderfully.
Here's a link to a how-to I did using one of their batteries to charge my Asus TF700 (this is the only way to remotely charge the Asus TF700 that I'm aware of)
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