What is the recommended charging current specification? Fast chargers supply higher currents.
I charge my Gryphon off either a small 5 Watt iPhone charger or a 12.5 Watt iPad charger.
Both work fine, the Gryphon doesn’t get hot, both charge in sensible time to full capacity and there doesn’t seem to be any downside to either.
I haven’t used a fast charger with the Gryphon but it was always my understanding that the charge rate will be determined by the device not the charger the device taking only what it needs and not being force fed by a powerful charger. So long as the voltage is correct.
I understand that a fast charger into a non fast charge device will output 5 volts and the device will draw up to 1.8 amps as the default. The fast charger can output higher voltage but needs the fast charge compatible device to give it an instruction to do so. If it doesn’t get that instruction, as with a standard device, it is not a fast charger at all and will fall back to the normal minimum default output.
My Fiio M11 Plus for example is designed to be fast charge compatible. Connected to a fast charger the initial charge will be quick but the M11 charging management will slow the rate right down in the last 10% or so and the M11 is controlling the charge rate not the 25 Watt charger.
I am no electronics engineer but based on my understanding a fast charger won’t do the Gryphon any harm since it won’t actually be trying to fast charge the Gryphon anyway.
As you said the fast chargers output higher current. In fact, as I am sure you actually meant, they CAN output higher current but the device has to draw that current, if the Gryphon doesn’t draw it the fast charger isn’t forcing power into it.
Alternatively I might be completely wrong. I use a normal charger because at best the fast charger will offer no benefit anyway.