No, this has nothing to do with Ridgid batteries or chargers. I have been looking to buy a new battery charger for my AA, and AAA NIMH batteries. I have owned a Rayovac charger for several years but it is no longer made, and I need another charger. Today I purchased, and returned one charger made by Duracell, and one I picked up at RadioShack. These units were in my opinon poorly made, and not going to give me years of service. I kept searching the Internet, and came upon one made by Nitecore. This four bay "smart" charger will charge nicads, nimh, and lithium ion at the same time! I ordered one, and if it works as well as the reviews claim it will be worth the research.