From Amazon
VARTA Longlife Power AAA Micro LR03 Alkaline Battery (24-pack) - Made in Germany - ideal for toys, torches, controllers and other battery-powered devices
Conrad Electronic
Varta LONGLIFE Power AAA Big Box 24 AAA battery Alkali-manganese 1.5 V 24 pc(s)
Kaiser Kraft
VARTA AAA, AAA, pack of 24