Replacement battery fits 9 iDect compatible models. Specifications: 500mAh, 3.7V, Li-Polymer. Compatible with: Binatone iDect X2i, Binatone iDect X2i Single, Binatone iDect X2i Twin, X2, X2d, X2i and 3 more compatible models. Replaces: Binatone MT LP053040, iDect MT LP053040, Uniross CP75. iDect replacement battery designed for Cordless Phone devices. Provides reliable power for your device.