I received a sample unit from ChoeTech of their new 6-port 50W USB QC3.0 charging station for testing. This product has been available on Amazon since early June.
http://ift.tt/28JK7H0
This product offers 2 QC3.0 ports as well as 4 'smart charging tech' ports. The smart charging ports will variably supply amperage up to 2.4A depending on the device.
Per the device stats:
4 smart ports = 5V @ 2.4A (Max)
2 QC3.0 = 3.6V~5.5V @ 2.4A (Max), 5.6V~9V @ 2A (Max), 9.1V~12V @ 1.5A (Max)
I have been testing out several companies' QC3.0 offerings over the past few months. I have a LG G5 and have posted previously about my results on QC2 vs QC3 charging here: http://ift.tt/28JK7XI
I now conduct my testing with USB multimeters connected directly to the charger. Despite the existence of good charging logging apps (I prefer Battery Monitor Widget Pro myself), the Android OS does not properly report amperage. I believe it is because they expect 5v input, and with Qualcomm's Quick Charge the voltage varies greatly.
Unit 1:
This one was fulfilled by Amazon. Utilizing the USB multimeter, I quickly discovered that the voltage did not fluctuate at! It started and remained at 9V, with amperage starting at 2 and slowly dropping as the charge time continued.
Basically, this behaved exactly like QC2.0 tech and not at all like QC3.0! I messaged customer support and they were quick to respond, indicating this was a defective unit. A replacement unit was sent, this one direct from China.
Unit 2:
This product did have the proper voltage and amperage responses I would expect from a QC3.0 charger.
One new issue I discovered though was that if the G5 was in the early stages of charging and the battery % was low, the charger would cut off, then restart. Careful examination showed that this would occur whenever the max wattage approached the upper limits of QC3.0 spec. (QC3.0 spec has a max wattage of 18W). It seems that when the phone requests >2.4A, the charging circuit would cut off, then restart. It does appear once it restarts once, the phone continues and finishes charging without issue. This was using the stock LG USB-C cable.
I brought this issue up with Choetech's customer/technical support. After examining the video I provided, they will be increasing the limits of the amperage circuit to 3A so that it will not cut off if the phone requests more. This updated version is currently being manufactured and I will report back with results once I receive it for testing.
http://ift.tt/28JK7H0
This product offers 2 QC3.0 ports as well as 4 'smart charging tech' ports. The smart charging ports will variably supply amperage up to 2.4A depending on the device.
Per the device stats:
4 smart ports = 5V @ 2.4A (Max)
2 QC3.0 = 3.6V~5.5V @ 2.4A (Max), 5.6V~9V @ 2A (Max), 9.1V~12V @ 1.5A (Max)
I have been testing out several companies' QC3.0 offerings over the past few months. I have a LG G5 and have posted previously about my results on QC2 vs QC3 charging here: http://ift.tt/28JK7XI
I now conduct my testing with USB multimeters connected directly to the charger. Despite the existence of good charging logging apps (I prefer Battery Monitor Widget Pro myself), the Android OS does not properly report amperage. I believe it is because they expect 5v input, and with Qualcomm's Quick Charge the voltage varies greatly.
Unit 1:
This one was fulfilled by Amazon. Utilizing the USB multimeter, I quickly discovered that the voltage did not fluctuate at! It started and remained at 9V, with amperage starting at 2 and slowly dropping as the charge time continued.
Basically, this behaved exactly like QC2.0 tech and not at all like QC3.0! I messaged customer support and they were quick to respond, indicating this was a defective unit. A replacement unit was sent, this one direct from China.
Unit 2:
This product did have the proper voltage and amperage responses I would expect from a QC3.0 charger.
One new issue I discovered though was that if the G5 was in the early stages of charging and the battery % was low, the charger would cut off, then restart. Careful examination showed that this would occur whenever the max wattage approached the upper limits of QC3.0 spec. (QC3.0 spec has a max wattage of 18W). It seems that when the phone requests >2.4A, the charging circuit would cut off, then restart. It does appear once it restarts once, the phone continues and finishes charging without issue. This was using the stock LG USB-C cable.
I brought this issue up with Choetech's customer/technical support. After examining the video I provided, they will be increasing the limits of the amperage circuit to 3A so that it will not cut off if the phone requests more. This updated version is currently being manufactured and I will report back with results once I receive it for testing.
from xda-developers http://ift.tt/28KjYvX
via IFTTT
No comments:
Post a Comment