I bought this power station because I was sick of buying expensive batteries. I know most of you are thinking that rechargable batteries were probably a better option than this power station (because they can be used for all types of devices and they are cheaper) but I'd have to disagree. The power station directly connects to the wii (through the power slot) so an extra plug isn't necessary. Also the batteries don't have to be changed, I just put the remote on top of the power station and it charges itself up.
Battery life is good, I've never had a problem with running out of juice and sometimes I don't plug it back in for a good few days. It probably has a similiar battery life to most batteries, but it really depends on what type of quality you are buying.
The station itself looks great alongside the wii, it has similiar curves and the same white. All in all, I am extremely happy with this purchase, it has already paid for itself twice or so over.