Replacement battery fits 9 Nihon Kohden compatible models. Specifications: 2700mAh, 27V, Li-MnO2. Compatible with: Cardiolife AED 2100 range, AED-2100, AED2150, AED2151, AED2152, AED-2150 and 3 more compatible models. Replaces: Nihon Kohden NKPB-28271K, Nihon Kohden SB-214VK, Nihon Kohden X217A. Nihon Kohden replacement battery designed for Medical devices. A precise, secure fit you can rely on.