Product Description BATTERY FOR KENWOOD TK2140 -Also Fits: NX220, NX320, NX420, TK2160, TK2170, TK2360, TK3140, TK3160, TK3170, TK3173, TK3360. Japanese cells. Housing thickness 0.65" / 16.4 mm. 7.4V / 2300 mAh / 17.0 Wh / Li-IonReplaces OEM Part Number: KNB35L, KNB57L.