Connecting cable is too short.

I bought the part to feed my navigator while driving with voltage.
The specified cable length 1.20m are really measured only just from the outermost edge of the USB socket to the rear edge of the cable lug.
That's definitely 30cm too short for me (Yamaha XT660Z). So I had again between sleeves half a meter cable. First point deduction.
This thing is so before anything non-technical staff.
I have connected the AC outlet via the supplied fuse directly to the battery.
The given 3mA quiescent current, the battery would lose in 14 days 1Ah; an empty eyes of the battery should there not supposed to happen - I'm curious. Otherwise, I'll still dazwischenbauen a switch.
Since I first had between sockets in the basement a piece of cable, I also once the fuse holder with mounted: it was a mistake, because the interfere with the cables. Such a thing should be in the assembly instructions. This is very poor - ie not present. Second point deduction.