The adapter did not have a spring loaded tip like pretty much all other car adapters do, which is probably why it took some fiddling to get the adapter to make contact with the socket and provide power. If it was moved slightly, power would cut out and it would need to be adjusted again. Also, the fuse recently burnt out on mine and can't really be replaced. It's cheap and works technically, but unless you only need one for one weekend, spend your money on something built a little better.