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. Battery Model Mismatch : IF200 uses XBAT200; IZ201/IZ202 uses XSBT700EU (separate BMS communication protocols).
eBay