... TK290, TK380, TK390, TK480, TK481 Replacement battery for KNB17A two way radio. This battery is compatible with TK280, TK290, TK380, TK390, ... TK480, TK481 two way radios. Battery Features:Uses the ... from defects in material and workmanship. Each KNB17A battery will outperform the original equipments specifications for form and ...