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The recall involves Rayovac-brand replacement batteries made in China and sold by BatteriesPlus between June 2008 and October 2010. Apparently there's a risk of explosion with the battery packs, and the CPSC and BatteriesPlus recommend that users stop using the packs immediately. Packs affected range from 2.4v to 18v models, in various configurations. The recall affects about 111,800 batteries.
Hope this benefits someone, Marc