Replacement battery fits 5 Nexto compatible models. Specifications: 2000mAh, 3.7V, Li-Polymer. Compatible with: DI ND2700, DI ND 2725, ND2325, ND2700, ND2730. Replaces: Nexto NENA-21120, Nexto NENA-PWBT10001, Nexto PWBT-10001. Nexto replacement battery designed for Storage devices. Designed for long-lasting power.