Do you get the double chime when you plug it in?
This is the usb-c cables I purchased.
Kinbashi 4 Pack ( 2x3FT , 2x6FT ) USB-C to Lightning 8Pin, Lightning to Type-C Charging Cable (Grey-in-Black) https://www.amazon.com/dp/B0777DZDRZ/ref=cm_sw_r_cp_api_Xf8kAb92T8SKP
Not getting the double chime to indicate fast charging.