Battery-operated vacuum cleaner battery. Screw fastening. Replace the batteries 66-01/02, 215867-01/03, 215867-01/04, 215867-01/06, 215867-03/02, 215867-03/03, 215867-03/04, 215867-03/08, 215867-04/02, 215867-07/04, 215967-01/02, 218895-01, 218895-02, 218895-02/01, 218895-02/03, 967834-02, 967834-05, BATTERY PACK 6-CELL(215681) PM8-US-HFB1497A, PM8-US-JAJ7430A, PU2-JP-HFA4456A. Fits many dyson V8 models. Check the fit table for your model.