CTA Digital DB-CANP60 NP-60 Rechargeable Lithium-Ion Battery (720mAh, 3.7V) Replacement for Casio NP-60 Battery Replaces The Casio Np-60 Battery 720mAh, 3.7V Retains full capacity, free from memory effect Lithium-ion for maximum battery life power 3 Year Warranty