Replacement battery fits 11 Rapid compatible models. Specifications: 2000mAh, 18V, Li-ion. Compatible with: RX1000, BGX500, Gloria MultiJet 18V pressure washer, Gloria MultiJet 18V, Gloria MultiBrush Li-On, Gloria WeedBrush Li-On and 5 more compatible models. Replaces: Rapid P4A, Gloria 729102.0000, Gloria 728970. Rapid replacement battery designed for Automated Mower devices.