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55flamingo
6
Aug 2, 2017
Can these be charged any other way than with a computer, say with a portable charging device? I am planning a trip and did not want to haul a laptop! Thanks!
Enicar
2
Aug 2, 2017
55flamingoA portable charger will work just fine. You can also listen to them passively with an aux cable
Wheatley
5
Aug 3, 2017
55flamingoPower transfer is part of the USB standard so you should be able to charge it from most USB chargers available. I doubt the headphones will have the protection circuitry required to safely charge outside of its specs but most will still be compatible. Fast chargers with the latest smartphones are what you need to be careful with.
Does anyone know what these headphones can take? My super charger puts out 5A for my cellphone and I would rather not risk blowing it up by testing it myself...
fonix232
63
Aug 9, 2017
WheatleySince USB power transfer is pretty clear (power source provides voltage and amperage, charged device takes as much amperage as it can), it is safe to use even fast chargers (those only trigger the "fast charging", i.e. higher voltage, when the charged device requests it).
LDAVID
1
Aug 9, 2017
Wheatleywhat kinda charger...most I have seen us 4.2
Tameh
128
Aug 9, 2017
fonix232Hmmm you meant higher current/amperage?
Wheatley
5
Aug 9, 2017
fonix232My understanding was that it is always 5V and a maximum of 5A for the USB standard. I found this on https://en.wikipedia.org/wiki/USB , BC stands for Battery Charging and PD stands for Power Delivery.
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My thinking was that electronics that don't have enough resistance would generate heat from the increased amperage if they cheaped out on protection circuitry. I'm now falling down a rabbit hole and I'm going to research this all a bit more :) Edit: Done some more reading. You're right about "...charged device takes as much amperage as it can ". Basically a higher current shouldn't do anything. It won't cause any damage and worst case is the device just won't accept it and not charge.
Wheatley
5
Aug 9, 2017
LDAVIDI have a Huawei P10 Plus. It has a big battery of 3850mAh which it charges in 2 hours :) The charger that it comes with has an output rating of 5A. Edit: I just checked the actual charger, the markings show 4.5V and 5A OR 5V and 4.5A. So basically 22.5 Watts
fonix232
63
Aug 10, 2017
TamehNo, I meant higher voltage. Some fast chargers aren't just 5V, but support faster charging speeds with 9V, 12V and even 15V - see Qualcomm Quick Charge, Samsung Adaptive Fast Charging, and even USB Type C Power Delivery (out of the three samples, only USB PD is an official standard).
But most of these are irrelevant, since these headphones will charge only with 5V, and even at that, with a limited current (based on the specs sheet, I'd say around 200-300mA@5V).
End of the line: Use whatever 5V USB charger you find, just make sure it's a quality one.
fonix232
63
Aug 10, 2017
WheatleyExactly.
Above USB standards, there's Qualcomm Quick Charging (mentioned before), and some other protocols that are usually dubbed "fast charging" - not just higher amperage, but in general, higher voltage options, where the device, after initial connection to the charger, negotiates maximum charging wattage and the matching profile (e.g. a charger can support 5V/2A, 9V/2A, 12V/2A, and 20V/1A, while the device supports up to 12V/2A).