im not a pro at electronics but isnt it possible to solder a charging plug to a usb cable?
to achieve usb charging?
did it for a homemade IR headtracking unit
SmokeMasta said:
im not a pro at electronics but isnt it possible to solder a charging plug to a usb cable?
to achieve usb charging?
did it for a IR headtracking unit
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I still don't think people understand. This devices needs more output then a usb plug can produce. Think about it this way, would you charge your laptop computer off your desktop usb port? The XOOM requires a 12v charge, just like your laptop.
bwcorvus said:
I still don't think people understand. This devices needs more output then a usb plug can produce. Think about it this way, would you charge your laptop computer off your desktop usb port? The XOOM requires a 12v charge, just like your laptop.
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wont it be able to trickle charge... when in a pinch some charge is better then none at all
What don't people understand about this. A USB plug in a computer might only be able to produce 500ma, but you can plug that SAME USB cable into a wall charger that uses USB and it will charge fast as hell. The iPad does this. All Android phones do this. It makes it so you only have to carry one cable and maybe a small wall plug.
deleted this
bwcorvus said:
The usb port is not connected to the battery for charging anyway.
https://motorola-global-portal.cust...sion/L3RpbWUvMTI5ODgyOTM5NS9zaWQvdnpSbGhIbms=
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guess you missed prev poster point ... if you solder on a charging plug it doesnt mean you need to remove the other plug have 2 plugs on one side
SmokeMasta said:
guess you missed prev poster point ... if you solder on a charging plug it doesnt mean you need to remove the other plug have 2 plugs on one side
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You are right i miss read it
after some reading usb 3.0 delivers 900ma
and it looks those usb charger blocks deliver upto 9w at 1.8a
It is hard to say if it will work. Since I don't have my Xoom yet, I can looking at the output rating of the wall charger. Maybe someone can look at their wall charger and see how much output voltage and current it produces. If it's higher than 5V, the USB might not be able to charge it. If it could charge it, it would be better to have a USB cable that has one end split into two connectors, one with the circular connector, and one with the micro USB end.
ggoldfingerd said:
It is hard to say if it will work. Since I don't have my Xoom yet, I can looking at the output rating of the wall charger. Maybe someone can look at their wall charger and see how much output voltage and current it produces. If it's higher than 5V, the USB might not be able to charge it. If it could charge it, it would be better to have a USB cable that has one end split into two connectors, one with the circular connector, and one with the micro USB end.
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Here you go.
looks like my usb 1.0 charger (from htc (ancient thing)) delivers 5v at 1amp
wondering if newer chargers deliver more. spec sheet of USB 3.0 says it can deliver 9 volt at 1.8 amp
hopefully the EU classifies the moto tablet as a telephone then its obligated by law to have usb charging ability
The iPad charger delivers 5v at 2 amps over a USB to 30pin cable.
bwcorvus said:
Here you go.
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Thanks. I just decided to glance at the Xoom teardown. From what I saw with the hardware, I don't think it will be possible to use USB to charge it. The battery alone is 7.4V, so there is no way to charge it with 5V unless the Xoom had a DC step-up convert. The teardown only lists a step-down converter which probably steps the battery voltage down for all of the components in the Xoom and has nothing to do with battery charging.
ggoldfingerd said:
Thanks. I just decided to glance at the Xoom teardown. From what I saw with the hardware, I don't think it will be possible to use USB to charge it. The battery alone is 7.4V, so there is no way to charge it with 5V unless the Xoom had a DC step-up convert. The teardown only lists a step-down converter which probably steps the battery voltage down for all of the components in the Xoom and has nothing to do with battery charging.
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Does it require the same voltage to do a trickle charge? From the research XDA members have done so far, the Xoom charger requires 1.5A, USB puts out .5A, that's not too far off if we just want trickle charging.
The battery is 7.4V but 5V isn't too far off either.
Does the market app SPARE PARTS work on the Xoom, or some other charging monitor app?
Maybe someone who already has the Xoom and knows how to solder can frankenstein a USB charging adapter? Make one end fit into the charging port of the Xoom and the other end fit into a standard micro USB plug.
This way, you carry your normal USB cable for data transfer but if you need to charge, then you plug the USB plug into the adapter which plugs into the charging port.
BTW, can someone please clarify that the charging port IS THE ONLY WAY to charge the Xoom? Someone said on here that the docking device has a USB plug that will charge the Xoom thru the USB?
Neo3D said:
Does it require the same voltage to do a trickle charge? From the research XDA members have done so far, the Xoom charger requires 1.5A, USB puts out .5A, that's not too far off if we just want trickle charging.
The battery is 7.4V but 5V isn't too far off either.
Does the market app SPARE PARTS work on the Xoom, or some other charging monitor app?
Maybe someone who already has the Xoom and knows how to solder can frankenstein a USB charging adapter? Make one end fit into the charging port of the Xoom and the other end fit into a standard micro USB plug.
This way, you carry your normal USB cable for data transfer but if you need to charge, then you plug the USB plug into the adapter which plugs into the charging port.
BTW, can someone please clarify that the charging port IS THE ONLY WAY to charge the Xoom? Someone said on here that the docking device has a USB plug that will charge the Xoom thru the USB?
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Spare parts works fine, so does battery monitor widget. The dock uses the 2 metal pins between the hdmi and charging hole.
My HTC charger outputs from the AC adapter to microusb at 5V and 1.0A, which is as high as I've seen with other phones and chargers.
The Xoom charger appears to output 12V at 1.5A.
I'm no electrician but that does seem like a pretty big difference. 140% greater in and 50% greater respectively.
A lot of armchair electrical engineers in here. Tell me, what would you gain from creating your own proprietary usb charger? You'd still have only one of them and you couldn't use it on anything else.
Has anyone stopped to think that it's very highly likely that the usb charging pins aren't hooked up at all inside the xoom?
This forum is the biggest group of whiny people I've ever encountered, and I once accidentally walked into a GoP fundraiser.
Neo3D said:
Does it require the same voltage to do a trickle charge? From the research XDA members have done so far, the Xoom charger requires 1.5A, USB puts out .5A, that's not too far off if we just want trickle charging.
The battery is 7.4V but 5V isn't too far off either.
Does the market app SPARE PARTS work on the Xoom, or some other charging monitor app?
Maybe someone who already has the Xoom and knows how to solder can frankenstein a USB charging adapter? Make one end fit into the charging port of the Xoom and the other end fit into a standard micro USB plug.
This way, you carry your normal USB cable for data transfer but if you need to charge, then you plug the USB plug into the adapter which plugs into the charging port.
BTW, can someone please clarify that the charging port IS THE ONLY WAY to charge the Xoom? Someone said on here that the docking device has a USB plug that will charge the Xoom thru the USB?
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Well the current rating is only part of the equation. Think of the voltage as the pushing force for the current. The Xoom has two Li-Po packs (two batteries) with a nominal voltage of 7.4V. It really depends on the battery, but in general for Li-Po's, the minimum voltage for this battery will be something close to 6V. Li-Po's require specific ways of charge with min/max voltages and certain currents. The minimum battery voltage cannot be overcome by the 5V from USB, thus it will not charge the battery.
If anything, the 5V could power the device, but it wouldn't charge the battery. I would bet that this doesn't work. The power jack on the Xoom probably goes into a regulator that reduces the 12V into a lower voltage that charges the Xoom.
gbenj said:
My HTC charger outputs from the AC adapter to microusb at 5V and 1.0A, which is as high as I've seen with other phones and chargers.
The Xoom charger appears to output 12V at 1.5A.
I'm no electrician but that does seem like a pretty big difference. 140% greater in and 50% greater respectively.
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I don't see how you see it as whining, we're just figuring out how to get things we want ourselves instead of waiting for the manufacturer to do it for us
Most of XDA's reader probably have some kind of techincal/engineering/IT/industrial background. Nothing wrong with pooling our talents to solve manufacturers' shortcomings.
USB Charging
Just tried to charge it VIA USB and wall charger with USB port & this is the result.
my charger is broken. aand my USB is fine! I try to connect to my samsung galaxy note and ipad USB charger, it donest work! why? don;t charger , and I try to connect my laptop to charger is still not work welll and very very slow charging/., why!! please help ! or I have to buy a new charger? any cheap price? where? please let me know
The asus charger is a higher voltage than a normal phone charger so all it will do is trickle charge
Asus charger is 5 and 15 volts the transformer needs the 15v, usb is only 5 so it won't charge very well.
You can charge from any USB3 port. USB1/2 won't charge it at all but will work for data.
Lethe6 said:
You can charge from any USB3 port. USB1/2 won't charge it at all but will work for data.
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USB3 will not help much. The transformer uses a physical USB connector that IS NOT USB electrically configured. Get a Dynex video universal charger set the output to the voltage closest to but below 15v. Plun the ASUS cable into it.
Rumbleweed said:
USB3 will not help much. The transformer uses a physical USB connector that IS NOT USB electrically configured. Get a Dynex video universal charger set the output to the voltage closest to but below 15v. Plun the ASUS cable into it.
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Damn you're right. I read that USB3 did the job but I just tried it and it doesn't charge either... that sucks
Lethe6 said:
Damn you're right. I read that USB3 did the job but I just tried it and it doesn't charge either... that sucks
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Your Welcome
was ctsttpe
Lethe6 said:
You can charge from any USB3 port. USB1/2 won't charge it at all but will work for data.
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This
I bought a "china" charger at ebay. It comes with ASUS plug and does its job fine. So no need to buy the expensive ASUS one.
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It's interesting how my old microusb cable slow charges the phone.
Are there different microusb cables with different amp charge?
onetake said:
It's interesting how my old microusb cable slow charges the phone.
Are there different microusb cables with different amp charge?
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I saw someone mention that there's a pin removed and that's the detection method but I just don't buy it. I am using a standard, off-the-shelf MicroUSB cable plugged into my Nexus7 charger (2a) and it doesn't complain about slow charging at all. I'm not sure if this is anecdotal or not, but I have confirmed that a stock Micro cable + 2a charger will do fast charge.
Just encountered slow charging problem, my phone charges about 9 hrs from 20% and just getting 75%, I checked at Ampere app, the input is just around 50-100mA+, I suspect the cable since my wall charger did charges perfectly with another device, or, buy a cheap alternative like xiaomi's type-c adapter, which costs more cheaply then buying the OP cable, which one should I pick? OP cable? or Xiaomi's type-c adapter?
Same here
lineoxkun said:
Just encountered slow charging problem, my phone charges about 9 hrs from 20% and just getting 75%, I checked at Ampere app, the input is just around 50-100mA+, I suspect the cable since my wall charger did charges perfectly with another device, or, buy a cheap alternative like xiaomi's type-c adapter, which costs more cheaply then buying the OP cable, which one should I pick? OP cable? or Xiaomi's type-c adapter?
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I have same problem, 1-20% is also very slow here, ampere shows 33-350mA
I've been using the mivi type C cable and the charging speeds are great.
Is there one that supports fast charge for the 6p?
I bought one of these but it doesn't fast charge ....
First2savvv Magnetic USB C Cable USB 3.0 USB Type-C Cable (C to A) for the new MacBook, ChromeBook Pixel, Nokia N1 Tablet, Huawei P9 V8 Note 8, Nexus 6P / 5X, LG G5, OnePlus 2, and Other Type-C Devices-CTX-TYPEC-16 https://www.amazon.co.uk/dp/B01N4DTVOG/ref=cm_sw_r_cp_apa_mayAybM520ZDK
Jinson7 said:
Is there one that supports fast charge for the 6p?
I bought one of these but it doesn't fast charge ....
First2savvv Magnetic USB C Cable USB 3.0 USB Type-C Cable (C to A) for the new MacBook, ChromeBook Pixel, Nokia N1 Tablet, Huawei P9 V8 Note 8, Nexus 6P / 5X, LG G5, OnePlus 2, and Other Type-C Devices-CTX-TYPEC-16 https://www.amazon.co.uk/dp/B01N4DTVOG/ref=cm_sw_r_cp_apa_mayAybM520ZDK
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I don't think you can fast charge a Nexus 6P when connecting it to a computer USB port, if that's what you're trying. Needs to be connected to wall outlet or car cigarette lighter to fast charge.
jhs39 said:
I don't think you can fast charge a Nexus 6P when connecting it to a computer USB port, if that's what you're trying. Needs to be connected to wall outlet or car cigarette lighter to fast charge.
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No this is to plug into the mains at home. This is just the cable. I have a orzly USB C to A cable that fast charges it with my main charger but this cable doesn't fast charge.
Jinson7 said:
No this is to plug into the mains at home. This is just the cable. I have a orzly USB C to A cable that fast charges it with my main charger but this cable doesn't fast charge.
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You should contact the manufacturer through Amazon and see what they have to say or just return the cable. The description says it's compatible with the 6P but not specifically that its compatible with fast charging on the 6P. It might be worded that way intentionally.
The seller said it's my plug and not the cable but my plug works with an orzly cable
Jinson7 said:
No this is to plug into the mains at home. This is just the cable. I have a orzly USB C to A cable that fast charges it with my main charger but this cable doesn't fast charge.
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There are many similar discussions around chargers and cables in the Accessories sub-forum. Basically USBA to USBC cables are not supposed to rapid charge because they are supposed max out at 2.4A. If they do rapid charge (5V/3.0A), they lack the proper resistor and so are not compliant with the USBC standard. You can Google Benson Leung to learn more, but head over to the Accessories forum and look/post there. You may also request a Mod to move this post where you may get more answers to your original question.