This battery holder holds two AA batteries. It is used to make a 2.4V rechargeable battery from NiMH or NiCd cells or a 3V battery pack from alkaline cells.
With the demise of so many Radio Shack stores, I turned to Battery Mart for this little, but essential, part. Bingo! Reasonably priced. Arrived before the promised date, too. Thank you! I'll be back.