Product Description Code Red Headsets sells a new aftermarket replacement Battery for Kenwood KNB43L.Voltage: 7.4V Capacity: 4100 mAh Type: LiPo PolyMax HPCKenwood: NX410, NX411,NX 210, 210G, TK2180,TK3180, TK5210 , TK5210G ,TK5310 ,TK5310G, TK5410