Today I tried navigation via BRP Go (2024+)...

[MakoShark2]

It's a USB 2.0 port, which by definition is 5V and 500mA.

I'm sure at 500ma my phone would've lost charge while navigating with the display screen on for over 2 hours, yet it kept the charge at 80%.

If it's a USB 2.0, then 0.5A is the standard for computers (launched more than 25 years ago), but it has been revised for chargers to support charging larger batteries. In fact, I believe you can deliver whatever you need as long it's 5V, cable and whatever is in the other end will dictate the current pulled.

 

[racoon]

I'm sure at 500ma my phone would've lost charge while navigating with the display screen on for over 2 hours, yet it kept the charge at 80%.

If it's a USB 2.0, then 0.5A is the standard for computers (launched more than 25 years ago), but it has been revised for chargers to support charging larger batteries. In fact, I believe you can deliver whatever you need as long it's 5V, cable and whatever is in the other end will dictate the current pulled.

Google thinks the USB 2.0 standard has not changed.

I did find one reference to a change to an embedded USB 2.0 (eUSB2V2) dated 09/27/2024 that is described as:

This eUSB2 Version 2.0 (eUSB2V2) document defines a performance enhancement to the USB industry-standard, USB 2.0 and eUSB2 specifications. The USB 2.0 specification describes the protocol definition, types of transactions, and bus management required to design and build systems and peripherals that are compliant with this specification. eUSB2V2 is primarily a performance enhancement to eUSB2 native mode to provide more bandwidth for peripherals, such as embedded cameras, by adding significantly higher data rates to USB 2.0, while maintaining a low-voltage electrical interface.

So the data transfer rate was increased, but not the power.

Embedded USB2 Version 2.0: Supplement to the USB 2.0 Specification (eUSB2V2) | USB-IF

www.usb.org