Replacement battery fits 7 TOHNICHI compatible models. Specifications: 2000mAh, 2.4V, Ni-MH. Compatible with: CEM10, CEM20, CEM50, 100N3, 200, 360 and 1 more compatible models. Replaces: TOHNICHI HHR-AA. TOHNICHI replacement battery designed for Equipment/Survey/Test Charger devices. A precise, secure fit you can rely on.