The survey saw Nintendo ask users for their thoughts when it came to owning rechargeable battery packs which has been speculated to offer up to 13 hours of additional use from a single 90-minute charge, with a recommended retail price of $40. Frankly, that is a whole lot of money to pay for something that can be avoided through having enough rechargeable AA batteries around in the first place. On the other hand, why can’t Nintendo just equip future models of their Wii remote with rechargeable lithium ion batteries from the get go?