Fully understood but still unclear why charging through micro USB should not work … if correct voltage (I.e. 3,7) is applied…
Thanks for the cable reference. My purpose was exactly what you foresaw : power tank + cable = better autonomy … But as the cable might have been difficult to find (not the case anymore, thank you) I was about to consider the micro usb solution !
Thanks for the reply and the trick on the x16 rooting which works like a charm !!!!