Replacement battery fits 10 IONYX compatible models. Specifications: 700mAh, 3.6V, Ni-MH. Compatible with: Endy NT, Endo Master V2, Apex Express, Endo Master V3, Endy 5000, Endy 7000 and 4 more compatible models. Replaces: IONYX VH803821, IONYX BAT003, IONYX BAT002. IONYX replacement battery designed for Medical devices. Perfect for professional or everyday use.