Hi. Perhaps not uncommon, but never seen before. Found behind my spider webs a plain wall adapter like this (including link just to be more explicit) :

https://www.ebay.com/itm/134325852715?hash=item1f4671da2b:g:q7AAAOSwJw9jcSXj&amdata=enc:AQAIAAAA8CKaEP0SphSEEYSugR41Umdz3gJpJ6/6yKDcWC/wh0bEdyWL61/AN+agsx6JkBb5wbFanhZDYEfx3FN4rPOgBxo+sEhUC9WDow3CRLo9Ceygn2+V6GcH3sTKRhj4ybn/PT3rBzLVQJACwoHHva1BgLa6YhYgOBNXT8UGDxEtOWH9fxsCXavhQGQxNAnu3bB1LsRweHhKTwKZvFoxGXigx7QSoOrV0sFZkuztwbcZYyFn6PnlIcwuOaTq/JBeVXl3szuSyHwOaTuFJ6PAnYynO91cF01CSeRjEzUtC2W8eMSWcxtTICNVVn1CEWB81yyZtg==|tkp:Bk9SR9qWkJX5YQ

Shows 110 to 220 AC input, 5V - 11V DC output with a common micro USB plug. I thought any USB plugs would be very married to only regulated 5V. Can someone explain ? Can a cell phone internal charging circuitry accept 11VDC to its USB jack ?

 

If you look at the last photo of the unit it says DC5V/1A
Obviously a misprint on the package. The 11 volt was suppose to say 1A

 

Thanks. My slightly different adapter shows clearly 11V. Others vendors at ebay show also the 11V

With magnifiable view, another : ----> https://www.ebay.com/itm/252160334071?hash=item3ab5ed58f7:g:5M0AAOSw5ZBWPTbd&amdata=enc:AQAIAAAAwEmbK3Zh9k0S4TUhYleGRAfWyPgACy5KLPU6LTFYAdQ9qptKsvjA+Xz/FLO1aMrO32u+jwV6rjegQW5+o9hW7r1dn1jNIFKwk+Y6us2GTw7ZcdusQvKwJ7rWFabVy1ptCcAxBf1+/swTvF7/VYHhIH8kpWRIb8vA8Vo5Gp1CtFGweZCr9ieVjMTR4ANfU/S0+H0LV0uOTL3VgMEitOMIyqSgCR6kDHt6WrYgPBm743iZcyRqXqReUsTqJKEVP1iCsA==|tkp:Bk9SR_ygt5b5YQ

Another ----> https://www.ebay.com/itm/234426231523?hash=item3694e46ae3:g:00oAAOSwLmhiDruR&amdata=enc:AQAIAAAA4HLAsZSLZkVDwNrBGBAfPAv88spnJ6VS6csg7tja+kuho+8GE5otklVGS0JkjE1q0/fKtzGm9Y64GjmpRK3AXaKwAMWsWMaVo3E4g5d/fIPQRm2QuOXafNP+dF2bedpY+Y+iR8TBk1/QR731cEDHf1/z60CarXwwIedAjS1yu++BRSvikM1aAYVdTFY1hJjGFX1y5gjHszkNwceB8248AyDjH9Kd+S4kBMda1neV6fYnzfaQmMwS2TtRETCfNSiWzrHHQko4uHwEUrBHsaxnG9q+1ug3/LX6CmDn8CSTg3ih|tkp:Bk9SR_ygt5b5YQ

----> https://www.ebay.com/itm/134251944203?hash=item1f420a190b:g:IaoAAOSwwGZhsWPu&amdata=enc:AQAIAAAAwLq7CkfI9kqlgDsI0Y/b/kg4e3/LSFVGdoWKSjytN7Y7rW+U7ONCoge/5qpS+Lm1HwkN8IcDpim8BXc54EersY3yA8nG2Lp/u4Pmbn4jVPO0IqDIkQ4zX0ASTs/0w7E25qSGM1BuXrfdZRJ8Qhy6rxOlOalewQH8XJIDrb81qNCGFCwcxpYdUXz22Hy4367x+MGs41QoZkMrt7XhaDUhUYL+CT1bD3/zCH/wyB8nFnOLRpOmOOvUvi5w8dNNK8lU8w==|tkp:Bk9SR7KQ6Jb5YQ

----> https://www.ebay.com/itm/303036933598?hash=item468e68a5de:g:BRgAAOSwLNxcRhMF&amdata=enc:AQAIAAAA4KBAWV4y818szBDh5TAeK6kqIfJ+JUd/6Rx+/LNqSdsidf0uXZf5F0enVH22R+DYwm/Fmgku2DmN3rfxw5SEvxeSza4SHO+DAPE/TPnLdFWwwaHWlVztDELaGvEOCcC0lqC6O1WeGhkKRXUA/yVGt8bFzZi0uip3O3YwyisuZW2UwvvpKtL/37mS/L0/YIPpC+QdxPV/FZvrAMKT11A+j3xcQPKCL75eJzNCQn41DiUGsg9fPJbbFVD+ADP1uoyRL9YUKHQ6rhwMOhNlRa9yLUuXbzAOK8oJaKlEi8P3HHic|tkp:BFBMspDolvlh

----> https://www.ebay.com/itm/1123348542...I3BbtlQIFAjP1dw9x0NIEG+gTR|tkp:Bk9SR7KQ6Jb5YQ

 

Qualcom Quick Charge and other high rate charging methods have been around for years before USB C PD(Power Delivery) became common.

All of these high-rate charging methods start at 5 volts until/unless a higher charging voltage is negotiated.

The charger shown claims to have a "smart chip" so it will accommodate some/most of the high rate charging methods.

 

It might also be a handy way to destroy smart phones. Is it worth that risk??

 

It might also be a handy way to destroy smart phones. Is it worth that risk??

QC (Quick Charge) has been a standard for a number of years, is currently in version 3 and is proven technology.

Likewise, USB C PD Power Delivery) has been around for years, is a proven technology and is taking over the charging industry.

In both cases, the supplies initially supply 5 volts until the device being charged negotiates for higher voltage. Chargers conforming to these standards aren't going to destroy any device.

The pictures show a modern charger. USB C PD can deliver over 60 watts – 3 amps at 20 volts.

 

Given that the device we are discussing is sort of unknown, is it worth risking the destruction of a phone that probably cost a whole lot??? Probably over $1000 (USD), when a known charger is fairly cheap??
The assumption that current standards are met by an unknown device in an unknown condition will perform as needed is a rather big leap of trust. Thus my advice to not gamble.

 

Correct; venturing to the unknown does not justify the risk of destroying a device by using a wrong adapter. Found another supply in my bins, sort of same weird multiple rated but in brick form, showing the wrong connector on right top of label (it is USB-C). The small one is the subject of this thread. Not a good image, but goes :

 

Three things I'm seeing:
First two things is the discrepancy between the label on the charger and the wording of the ad.

As has already been pointed out - the misprint of 5V-11V output indicates to me that whomever wrote this is not paying much attention to detail. Nor do they understand a thing about electricity. The charger is NOT 100VAC ready according to the label on the charger though the description states it is. The 5V-11V output statement obviously varies from the label of DC5V/1A.
The third thing I see is "Made in China". Which may explain why the advertisement is chocked full of errors.

 

Three things I'm seeing:
First two things is the discrepancy between the label on the charger and the wording of the ad.
View attachment 293172View attachment 293173
As has already been pointed out - the misprint of 5V-11V output indicates to me that whomever wrote this is not paying much attention to detail. Nor do they understand a thing about electricity. The charger is NOT 100VAC ready according to the label on the charger though the description states it is. The 5V-11V output statement obviously varies from the label of DC5V/1A.
The third thing I see is "Made in China". Which may explain why the advertisement is chocked full of errors.

I suspect the 5V-11V is a misprint. I've never seen any wall adapter or power supply that just gives voltage, with no current rating. Either some Chinese translator mis-wrote the values, or they don't know how to interpret them. Once one factory in China makes the mistake, all the others that are cloning the same thing, copy the same mistake.
I suspect what it means is 5V -1A, or possibly 5V -1.1A
1.1A to someone who does not know how to read the English alphabet may mistake it as 11, and used "V" instead of "A"
The fact those supplies give no current rating indicates some error somewhere, don't use those supplies. There could be errors in the design of the supply as well...
Besides, the ones linked to are from Ebay, enough said...

 

Y'all may want to update your knowledge on USB charging standards.

The table below illustrates Power Delivery voltages up to 20 volts, with a maximum current of 5 amps – 100 watts delivered to the USB device. The latest revisions to the standard take it even further.


While your Jitterbug flip phone may only charge at 5 volts, most modern phones use USB C PD, QC or other methods to charge at a faster rate than can be accomplished at 5 volts. Chargers conforming to these standards won't damage any USB device connected – they don't supply more than 5 volts until it is negotiated between device and charger.

 

Yes, found more chargers. The Qualcomm CA-25 ----> https://easyt3ch.com/products/qualcomm-quick-charge-3-0-3a-for-iphone-samsung-xiaomi-oppo-vivo

The prostitution of a serial bus connection for the masses charging devices because they own a cable.
I hope works only for a device that can negotiate charging rates; and for those that do not, stay fixed at 5V.

 

The prostitution of a serial bus connection for the masses charging devices because they own a cable.

Actually, the prostitution of a serial bus is anything but – it's designed to save the planet from tons of e-waste from every DC and battery powered device from having unique, not-compatable-with-anything-else chargers and cables. The push to USB-C PD is a move to standardize on chargers.

My laptop, my phone, and dozens of USB devices I have can all operate off the same charger, and if any of those devices get replaced, the same charger can carry on with other devices. You probably haven't noticed that new phones don't come with chargers and cables, nor do most of the devices that prostitute the serial bus.

If you're skeptical of standards supported by Apple, Google, LG, Samsung and most other cell phone manufacturers with controllers to support the protocols by Texas Instruments, the solution is pretty simple – check the supply voltage with a DVM or VOM (for those who don't trust those new-fangled gadgets).

I will admit that Ya'akov reported one power brick with an attached cable with a USB-C connector that supplied straight 12VDC and damaged some device. This charger was not compliant with the standards and didn't pretend to be. It was not marked as a "USB charger" and was marked as having only a 12 volt output. An extremely poor design choice on somebody's part. This is the only problem of this type that I have heard of.

 

Regarding post #13, J.C. is placing FAR more trust in the integrity and competence of producers of commodity items than I would. In addition, consider the proliferation of counterfeit devices claiming to be what they are not.
"Trust, But Verify" is certainly reasonable in this case.