Hitech - Wii Remote and Balance Board Batteries (4 pack) and Battery Charger Hitech IC-34LCD fast charger allows you to charge 2 to 4 units AA / AAA Ni-Cd & Ni-Mh batteries Comes with 4 pack Hitech AA Ni-Mh 2500mAh rechargeable batteries High capacity rechargeable AAs let you play longer between battery changes. Guaranteed to work! Package comes with DC car charger, allowing you to charge batteries on the road Alkaline and primary battery detection capability, built-in temperature sensors prevent overcharge