I use this with an iPhone adapter to keep my iPhone charged and running (as i use it as my bike sat nav as well). Works very nicely, and easy to fit up to the battery. As other reviewers comment, the 1m loom is quite long, and you need to coil it up under your seat, but I'd rather have the extra length and not need it, then need it and not have it. It comes with a 2 amp fuse fitted, which I managed to blow, when I tried to plug a low-power compressor in to inflate one of my tyres slightly (very surprising the feeble cheap compressor I was using could draw more than 2 amps). Got a nice little fuse cover, so should be a breeze to change with a spare fuse, so no real worries, and good to have the security of a fuse to stop a faulty appliance ruining the battery.