This is a good little socket and now I've fitted it to my bike it works fine in charging my satnav. The leads are a bit short and it looks like it is designed to hook up to the ignition or front light rather than the battery as I have installed it. I had to extend the leads to get it to reach back the battery under the passenger seat. Also, it comes with no fittings so I used cable ties to fit it. Finally, it comes with a waterproof cap, but it isn't properly fastened to the socket and is in danger of dropping off when not in use.
Othewise the socket is perfectly functional and the inline fuse is an excellent addition compared to other sockets available.