Panasonic HHR-P592A/1B REPLACEMENT CORDLESS PHONE BATTERY WORKS WITH KX-TC900 SERIES, KX-TCC900 SERIES AND KX-TCM900 SERIES FOR PANASONIC KX-TC900/TCC900/TCM900 SERIES NICD 700MAH/3.6V Works with the following models: Panasonic KX-TC900B, Panasonic KXTC909B, Panasonic KX-TC910-B Panasonic KXTC910DB, Panasonic KXTCM938B, Panasonic KX-TCM940-B, Panasonic KXTCM940W