These chargers are I believe the cheapest way of having a light per battery so that you know when each batter is and isn't charged. They grip the batteries better than springs. They seem to die after a while (a year, perhaps) and for instance say that batteries are always charging, but perhaps that is because I do bad things to them such as insert batteries back to front. I keep purchasing them. I have purchase at least 6 of these chargers in the past. I have three working chargers now.
looks cool. i actually need just the socket for a battery. but this is cheaper And for this Price the socket Is great :)