The new 'Contactless Charger Set for the Wii Remote Control' goes on sale in Japan on 25 August and comes with a surprise that the name more or less gives away - wire-free recharging (of a sort).
The replacement battery pack - naturally, it uses eneloop cells - draws its power not through metal contacts in the cradle, but by magnetic induction similar to that used by Splashpower and others.
Obviously, this means there's no need to remove the Wii's silicone jacket just for recharging.
As for pricing, the base set costs ¥5,500 (£25) and includes a battery pack, an AC adapter and a single stand. Sanyo says that four sets can be linked together, although this will cost around ¥20,500 (£95) for all the bits needed.
Sadly for Wii owners outside Japan, a spokesperson offered them little hope of getting the kit, saying, "Currently the product will not be sold overseas although it is under review."