Replacement battery fits 8 Cardipia compatible models. Specifications: 2000mAh, 12V, Ni-MH. Compatible with: 800C, ECG-101A, ECG-300A, Biocare ECG-300G, Biocare ECG-300, Biocare ECG-101 and 2 more compatible models. Replaces: Biocare NS200D1374789. Cardipia replacement battery designed for Medical devices. Designed to match the original manufacturer’s performance.