Bulk AA Alkaline Batteries 20 pk Product Description:

Bulk AA Batteries 20-pk

Mignon / AA / LR6

1.5V Alkaline battery

Application range:
Standard household appliances such as; clocks, radios, remote controls, telephones, etc.

Diameter: 14.5mm
Height: 50.5mm

20 pcs. box (Part No.: 5015548)

You could also buy  AA rechargeable batteries and used each of them up to 1000 times

as an alternative to throw-away alkaline batteries