Disposable Battery, Alkaline 1.5V
From Amazon
VARTA Energy AAA Micro LR03 Alkaline Batteries (24-pack) – Made in Germany – ideal for radios and wall clocks
Conrad Electronic
Varta Energy AAA CVP 24 AAA battery Alkali-manganese 1.5 V 24 pc(s)
Kaiser Kraft
ENERGY battery | AAA | Pack Of 24
OnBuy
Alkaline Battery AAA / LR03 24 pcs