BATTERY FOR REGENCY / RELM HH400 - 11.3V / 600 mAh / NiCd Other Compatible Radios: Maxon SP-5050D, TAD1510, TAD1510S, TD1520, Uniden APH series, APL series, APU series, Vertex Standard FT2003, FT4703, FTC703A, FTC708A, FTC2203, FTC2205, FTC5203, Wilson HH series.. Replaces OEM Part Number: Regency / Relm BP34, Maxon MA181, Uniden APX500, Vertex Standard FNB-2, Wilson BP4, BP4C.