Wii remotes take two AA batteries, and the only type of battery recommended for use with Wii remotes are Nickel Metal Hydride batteries. If you want to use rechargeable batteries, you must follow the manufacturers guidelines for safety and proper usage, as failure to do so could cause damage to the Wii Remote and void the warranty. When inserting new batteries, be sure to insert the minus (-) end first, and remove the plus (+) end first when replacing the batteries.

There are many options for rechargeable batteries for Wii remotes, including Nickel Metal Hydride batteries, eneloop pro AAs, and rechargeable battery packs. However, it is important to note that not all rechargeable batteries are compatible with all charging docks, so it is important to check compatibility before purchasing. Additionally, some users prefer to use alkaline batteries or lithium-ion batteries, but these are not recommended by the manufacturer.