>>I plan to use Duracell heavy Duty 9V. Glad if someone could share his/her experience.>>
I bought quite a few batteries and then my Dad came to visit. He converted my Drionic to electricity.
BTW, I have judged in several Science Fairs and Energizer batteries have always come out on top compared to the Duracell. Duracell uses more advertisements and we all think they are the best but when kids test them at Science Fairs the Duracell comes 2nd or 3rd. Try one of each in your units and let us know!
Denise