Panasonic P-P305A REPLACEMENT BATTERY FOR PANASONIC KX-TC1000/1000B/1001 AND OTHERS FOR PANASONIC KX-TC1000/1000B/1001 NICD 300MAH/2.4V Works with the following models: Panasonic KXTC1000, Panasonic KXTC1000B, Panasonic KX-TC1001