Generic 4 Pack 1500mAh Cordless Phone Battery for Panasonic P-P511 Compatible for GE TL-26400,Radio Shack 9602100 439007 439005 439004 439003 439002 23965 This replacement battery has an integrated microchip that prevents overcharging and lengthens battery life. High quality 3.6V 1500mAh Standard battery. Works with multiple models. 100% compatible with Original Battery. Great bargain with excellent quality guaranteed.