iClover 4PCS Cordless Home Phone NiCd Rechargable Battery for STB-956 BT-1015 BT-1007 voltage : 4x 2.4v Capacity : 700mAh Fit for models : Again & Again: STB-956, STB956 Battery Biz: B730, B-730 Energizer: ER-P506, ERP506