Pair and Go Nintendo Wii Accessories - Twin Docking Power Station (it wont let me post image :S)
When your Wii is not in use, you simply plug your wii-motes into the charging docks. You Wii-motes will always be charged up, without the need to keep buying batteries.
You can plug either the wii-motes into the charging unit, or just the re-chargeable battery packs, as the dock has been designed to fit either. When the unit is charging a red light is shown, which then turns blue once the charging process has completed.
The unit gets its power from the Wiis AC power adapter itself (not the console) and therefore it does not require its own AC power supply. This feature means that the Wii console does not need to be switched on in order for the charging dock to draw power.
This great product comes complete with two re-chargeable battery packs and even has space to stand two nunchuks, which helps to keep your accessories in one place.