So there are two interesting threads going on... One about USB C Hubs and one about how the Tab S8 Series Super Fast Charge protocol works in real life. I'd like to see what people say about power pass-through with their USB C hubs. What it comes down to is that the Tab S8/plus/ultra really wants 10V @ 4.5V, but most chargers max out at 9V @ 3A or if they support PPS, 10V @ 3A. For hubs, I don't know what "PD Pass-Through" means or how it works and if it supports the PPS format Samsung wants. Many hubs say "support 100W 3.0 PD Pass-Through". What does this mean?
My UGREEN 70411 hub says it supports 100W PD 3.0 pass-through charging. But when I use the same cables and power supply, the charge going to the tablet battery drops precipitously with the hub in the chain:
65W PD 3.0/PPS power supply --> Tablet gives Super Fast Charge 2.0 with Ampere reporting 7A @ 4.12V charging the battery i.e. 30W
65W PD 3.0/PPS power supply --> 100W USB C Hub --> Tablet gives Fast Charging (not Super Fast Charging) with Ampere reporting 2A @ 4.12V charging the battery i.e. 8W
So it isn't even close to "passing through" the power.
Does anyone get better results? Do we need anything special in a hub to "pass through" the PPS protocol Samsung actually requires? Do I just have an old hub that doesn't support PPS?
Thanks,
Joe
I have the same issue. Using a brand new Anker USB C hub. No matter which high quality cables or 100w chargers I use, or mix of peripherals plugged into the hub (I use a 4k monitor and an SSD), the tablet doesn't charge. When the tablet is plugged in, and the cover is closed or screen is off, it charges as it should. Would really like an answer as to why this is, or a workaround. I'm trying to justify this as a laptop replacement, and inability to charge whilst simultaneusly in use and 'docked' is a potential dealbreaker.
Related
So I'm not able to use the turbo charger at the moment and have it plugged into the computers USB. I just noticed that its going to take nearly 8 hours to charge..is this normal or is something causing the slow charge?
Sorry just realized I posted this in wrong section.
crookone10 said:
So I'm not able to use the turbo charger at the moment and have it plugged into the computers USB. I just noticed that its going to take nearly 8 hours to charge..is this normal or is something causing the slow charge?
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Computer USB only charges at ~0.5 A. if it's USB 2.0 or ~0.9 A if it's USB 3.0. That's opposed to the turbo charger which charges at well over 2 A.
Computer USB ports only supply 500mA for USB 2.0, or 900mA for USB 3.0. However, almost all Android devices determine whether you're plugged into the wall (AC) or a computer (USB) by whether the data pins are shorted together (as they are in android-compatible chargers -- but not iOS-compatible chargers). If the data pins are intact (or missing, like in most charge-only cables) then the device will charge at 500mA regardless. This is why some people experience slow charging with USB 3.0, or some wall chargers (even those rated for 2A).
Update: Just saw someone beat me to the punch a bit, but wanted to make a correction. Turbo chargers (Quick Charge 2.0) CAN charge at 3A, but the Moto Turbo Charger only charges at 1.6A for both 5V and 9V modes, or 1.2A for the 12V mode. Thus, it's not the amperage that's increased but the power (watts).
jt3 said:
Computer USB ports only supply 500mA for USB 2.0, or 900mA for USB 3.0. However, almost all Android devices determine whether you're plugged into the wall (AC) or a computer (USB) by whether the data pins are shorted together (as they are in android-compatible chargers -- but not iOS-compatible chargers). If the data pins are intact (or missing, like in most charge-only cables) then the device will charge at 500mA regardless. This is why some people experience slow charging with USB 3.0, or some wall chargers (even those rated for 2A).
Update: Just saw someone beat me to the punch a bit, but wanted to make a correction. Turbo chargers (Quick Charge 2.0) CAN charge at 3A, but the Moto Turbo Charger only charges at 1.6A for both 5V and 9V modes, or 1.2A for the 12V mode. Thus, it's not the amperage that's increased but the power (watts).
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Interesting, I just assumed the Turbo charger worked at higher amperage. Thanks for the education. :highfive:
gtalum said:
Interesting, I just assumed the Turbo charger worked at higher amperage. Thanks for the education. :highfive:
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No problem. I like to make that correction when I see it, because Quick Charge 2.0 adapters are starting to come out, and it makes it easier to compare them to the (rather expensive) Moto Turbo Charger if know its true specs. For instance, a lot of QC 2.0 adapters don't even have a 12V mode, but run their 9V mode at 1.67A. Since the Moto charger's power is the same in both 9V and 12V modes (14.4W), and the 9V mode of those other chargers actually push 15W, they can charge a bit faster than Moto's charger, although if you just saw the the lack of 12V or the "low" 1.67A rating, you might not catch that.
jt3 said:
Thus, it's not the amperage that's increased but the power (watts).
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P=IV
Amigo.
Hi, I'm new here and my first post on XDA forum, please excuse for any incorrect terms. I received my OP3 last week and looking for to buy more USB type C cables and chargers to use at home and in the office.
There are several post regarding USB type C even from Google tech guy Benson Leung, but after reading them, I was still unclear. As my understanding OP3 uses DASH which is charging at 4A, thus drawing a max of 4A from the cable and charger. The available type C chargers and cables (type A to type C) on mainstream are 2.4-3A which are used by majority of the devices on the market. So in theory my OP3 can use the mainstream chargers and cables, but take longer to charge. However there is a warning: "Only use cables following the specification otherwise you can risk damage to your USB hub, USB ports on PC, or AC Charger if the phone is requesting to charge at a current of 3A and the charger cannot support it!" (in our case it would be 4A)
The easy option is to buy the DASH charger and cable from OP at 4A, but how compactible will it be for other devices. Will it also work on the mainstream devices, or will it cause damage due to the larger output? TBH I'm not to bothered with the charging times, I'm more interested in the compatibility/future proof of the accessories.
Thanks in advance for the replies!
The phone draws the amps it needs. I'm pretty sure all current phone chargers output 5 volts so no need to worry about that. There are a few different quick charging technologies and AFAIK the OP3 only supports Dash and Dash only supports the OP3. From what I've read the Dash cable is just a USB C cable that's thicker and has extra pins for the extra amps.
Dash charger + Dash cable + OP3 = Dash charging, 4A
Dash charger + Dash cable + other device = Normal charging
Dash charger + normal cable + OP3 = Normal charging
Dash charger + normal cable + other device = Normal charging
Other quick charger + Dash cable + OP3 = Normal charging (AFAIK, some say that OPPO quick charger allows quick charging)
Other quick charger + Dash cable + other device = Depends on device, if the quick charger and device are compatible with eachother the Dash cable should be able to provide the necessary current
Other quick charger + Normal cable + OP3 = Normal charging
Other quick charger + Normal cable + other device = Depends on if the other quick charger works with normal cables
Normal charger + Dash cable + OP3 = Normal charging
Normal charger + Dash cable + other device = Normal charging
Normal charger + Normal cable + OP3 = Normal charging
Normal charger + Normal cable + other device = Normal charging
Your best bet would be to buy a Dash cable and a quick charger that works with your device. AFAIK other quick charging technologies don't need cables capable of providing more current than the Dash cable already does.
thanks :good: nakkivene for a detailed reply, it was very helpful. I will get the DASH charger and cable, at least the thicker cables are somewhat future proof.
I've been searching around, and haven't really found an answer to this. I'm in the process of purchasing a car that has OEM AA, but unfortunately only one USB port, which apparently provides less than 1A of output. There is a 12V outlet in close proximity to the USB port. Are there any solutions out there for using AA while also providing higher amperage charging? Was thinking about trying a small hub/adapter (similar to what you would attach to a USB-C Macbook) but I wasn't sure if that would pass-through power as well. Using a stock Pixel 2.
Probably its not easy to achieve, but usually this is not a problem, you can still buy a different charger for rapid charging which works via the 12v outlet, and when its full or nearly full switch to the AA port, since even if its lower than 1A it will be enough to charge the phone ( or better: to not let it discharge) since the display is off during AA session
I use a USB Y Cable (https://www.startech.com/Cables/USB...xternal-Hard-Drive-USB-A-to-mini-B~USB2HABMY3) with a USB Mini to USB-C adapter.
I don't get the "Charging Rapidly" notification on the lock screen, but it does charge noticeably faster than before.
Hello. I tried charger qc 3.0 but doesn't work at speed fast... I tried the genuine charger with a tested cable hi speed 3.0 and doesn't work at speed... Can anyone suggest a charger and a cable tested working lower yhan 10 dollars shipped??? Its incredible this price difference with qc that i bought both 3 dollars
Use original cable and charger ro charge at high speed... Other cables or chargers don't work and can even damage your phone..
(for example my umi fast charger usb C..
charges at 5+9+12volts)
With a cheap price always comes cheap quality.
QC 3/4 are not built for the Mate 10 series, they are built for QC compatible devices, while it will still charge the phone, probably at slightly increased speeds - you won't get the full power out of it as, its not meant to be used on a Fast charge phone (Fast charge / SuperCharge whatever Huawei call it)
Let me share something which I've found out recently. If you use a QC charger for eg. Xiaomi Type C Mi Power bank Pro which support QC 3.0 charging, my Mate 10 will display "Fast Charging" which is definitely faster than normal "Charging". If you use the Huawei Supercharge AP09S Power bank, it will charge at the max rate "Super Charging"
Huawei Supercharge is a dedicated technology just like qualcomm quickcharge. For it to work you need the dedicated hardware.
Most important: Huawei Supercharge phone and Huawei Supercharge power brick. Since supercharge features up to 5A current you will need a type c cable that supports 5A. Then you are good to go.
The Huawei phone of course supports standard USB protocols like 5V2A etc. But that's not fast.
Older Huawei/honor phones support Huawei quickcharge (what they used before supercharge) which is 9V2A. I think the mate 10 supports that too.
From my experience though the phone displays "charging" when connected to PC via USB. "Quickcharge" when connected to normal wall charger. "Supercharge" when connected to supercharge wallcharger (or supercharge car charger or supercharge Powerbank) via 5A (ampere) USB cable.
Looking at this article it seems like an upgraded cable could charge a device faster. If the phone shows "Fast charging" can that be improved upon? Could a USB PD cable charge faster? Is the cable that came with the phone the best?
It is true that the cable intervenes with the charge the battery receives, but, in the end, there is a limit in the charge the charger itself can supply
I have used a couple of different USB Type-C cables that are said to be suppose to offer much faster charging speeds than the bundled stock Samsung Type-C cable. Honestly I don't notice a difference in charging speeds.
The real proof is always testing with a USB wattmeter and a phone that has less than 80% charge (screen-off).
The most I get out of a stock charging brick and a Anker Type-C cable is 18 Watts. Stock cable gives me 16 Watts under the above conditions