Car Battery Eliminator for Kenwood TK2180 TK3180 TK5210 TK5310 NX210 NX410 Radio
(battery model is KNB-31A ). Kenwood : TK2180 TK3180 TK5210 TK5310 TK-5410 NX210 NX410. Enable s the radios to be used from a 12-13.8VDC power source (cigarette lighter plug, portable 12V power kit, etc).