Product Description BATTERY FOR KENWOOD TK2180 - Also Fits: NX210, NX410, NX411, TK3180, TK5210, TK5210G, TK5310, TK5310G, TK5410. PolyMax HPC cells.7.4 V / 4100 mAh / 30.3 Wh / LiPoReplaces OEM Part Number: KNB-43L.