Duracell(r) 21/23 Security & Electronic Battery

For the best deal on the Duracell(r) 21/23 Security & Electronic Battery, you'll want to compare prices before you buy. Our list of stores carrying the MN-21B/2 (located below) tracks merchants who often have bargain prices and great sales. In addition, we provide a price graph for every item, showing its high and low price history over the last three months. This lets you quickly spot price trends, so you can get the best possible deal. StreetPrices was the first site on the web to offer price graphs.