I am interested in buying my own cigarette lighter adapter allowing me to charge via USB-C and USB. Devices charged would include iPad Air, iPad mini and potentially an iphone. It should only be used as a last resort in case my batteries die or the powerbank is really empty.
I heard and read, that not every adapter is working well in aviation, especially because of vhf interference which can be heard?
Any suggestions or experiences of adapters you can recommend?