If you have a Wii, then you already know that the more people you have playing the better. 2 is definitely better than 1 and 4 is the best way to tackle many of the party and mini game suites available on the Nintendo Wii. Penguin know this too, which is why they have come out with the 4X Quad Charge Station for Wii,

The 4X Quad Charge Station for Wii will supply your Wiimotes with High Capacity Li-Ion Polymer Rechargeable Batteries, and the ability to charge all four of them simultaneously. The batteries will be good for 1000 or so charges, and will be able to power up to 13 hours of Wii bowling per charge.

The 4X Quad Charge Station for Wii is available now for $44.99. Which is a pretty good deal considering the savings in standard batteries, the time you'll save, and the unbridled Wii-tasstic fun that will be unleashed.

Source.