Battery wear question

[MikeinDestin]

I use both AA and D size batteries for my old radios. AA for the 3 and 6v, and D size in series to make 9v, as an external source. Usually the D batteries will wear very evenly, almost identically in fact. However not so with the AAs, only sometimes. Usually one battery, typically a middle one will wear much quicker. Why is that? Does size have something to do with it? Thanks for any information.

 

[krokus]

What type of batteries are you using? (Alkaline, NiMH, lithium, etc.)

Are the batteries from the same package, so they are the same age?

 

[MikeinDestin]

They are all Alkaline I'm talking about. They're also from the same package.

 

[krokus]

They are all Alkaline I'm talking about. They're also from the same package.

Just wanted to make sure there was not a mixing of batteries. I wonder if there is a quality issue with the battery facility.

 

[MikeinDestin]

They're Ray-O-Vacs I bought in 2020. Some of them were leakers, while the others are ok. I've also been using some Lithium primarily AAs with good results.

 

[wtp]

time to buy new batteries...