"LENMAR" CORDLESS PHONE REPLACEMENT BATTERY *Fits: Panasonic - KX-TG2000B, handset KX-TG4000, handset KX-TG4000B, KX-TGA400B, KX-TGA420B, Radioshack - ET-3533, ET-3541, Uniden - EXP-370, EXP-370A, EXP-370CS, EXP-371, EXP-4540, EXP-4541, EXP-970, EXP-971 *Replaces: Panasonic HHR-P506, HHR-P506/A, Uniden - BT-1007, BT-1015, BT-904, Energizer - ER-P506, GP batteries - GP60AAS2BMX, and Sprint - 89340 *2.4 volts *1200 MAH *Nickel metal hydride *1 year warranty *Clamshell