Hello everyone! I'm new to the forum as of today. After 30 years, I'm returning to CB radio and have a question for those of you who have used or are still using Radio Shack gear. I've been resurrecting my portable gear after years of storage. I have a amplified mic (cat. 21-1175) that used a 7 volt Duracell battery. However, in searching the net, it appears that Duracell no longer makes this battery. I suspect that the age may make it obsolete. In trying to find a replacement, Interstate Battery offered to sell me what they said was a replacement, but turns out it is 7.75 volts and checks out almost 8 volts on the meter. While the Interstate techs insisted that the higher voltage was okay, I'm thinking not. Would someone in the know like to weigh in on this?.....and would someone like to suggest where to go to get a correct voltage battery? I realize that a lot has changed in the 30 some years that I've been absent from the band, but I'm looking forward to the learning curve. Thanks for your input!