Replacement Battery for Panasonic HHR-P501 / P-P501 / HHR-P504 / P-P504 / PQP504SVC / PQP60AAF3G2 / PQWBTC1461M / KX-A36 / PQXA36SVC / TYPE 1 / TYPE 11 / TL26154 / CPB-400B (Bulk Packaging) Composition: NiMH Voltage: 3.6v