Shark IF201, IF202, IF250, IF251, IF281, IF285. ItWILL NOT work with Shark IZ201UK, IZ202UK, IZ251UK series (which use XSBT700EU batteries). Shark IF200, IF200C, IF200W, IF200UK, IF200UKT. Shark IC205, IONFlex 2X DuoClean Series.
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