No, all batteries and cartridges are not interchangeable. You need to find the alphanumeric designation (whew) of the battery that you have. Like KR808D-1 or RN 4081. Then you can find the cartridges that fit. That is not to say that you don't have the right cartridges now, and there isn't some other problem. I would try Googleing the brand that you have and see if you can find out what kind of battery you have.