{"product_id":"kenwood-tk-2400vp-replacement-battery-74v-3400mah-li-ion","title":"Kenwood KNB-69L 7.4V 3400mAh Replacement Battery TK-2400VP","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eKenwood TK-2400VP \/ TK-3400UP2 Series — 7.4V Li-ion Replacement Battery (KNB-69L)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 3400mAh Li-ion replacement for the Kenwood KNB-69L battery pack. It fits the TK-2400VP, TK-3402U16P, TK-2402V16P, TK-3400UP2, and more than 20 additional TK-series handhelds. The pack slots into the standard Kenwood battery bay and connects through the same multi-pin contact strip as the OEM unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTK-2400 and TK-3400 platform fit:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, contact pin layout, and BMS handshake protocol. One pack covers the entire platform because the voltage rail, physical housing, and connector footprint are identical across the series.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack on a TK-2402V16P and a TK-3400UP2 dock. The BMS accepted the initial charge handshake without faulting, held voltage through repeated PTT transmit bursts, and the dock advanced to steady-green on both units.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-insertion contact check:\u003c\/strong\u003e\n    If the charger dock shows a fault LED on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The Kenwood TK platform requires a clean contact cycle to accept the new BMS handshake before charging begins.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the TK-2400VP cuts out mid-transmission on a fresh KNB-69L\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNew Li-ion cells ship at storage voltage — typically around 3.7V per cell, or roughly 7.4V combined. When the radio keys up to transmit, RF output draws a sharp current spike. If the pack has not completed a full charge cycle first, the BMS reads that spike as an overcurrent event and trips the protection circuit, killing transmission. This is not a fault with the pack — it is the BMS doing its job on an undercharged cell. Charge the KNB-69L to full before first use in the radio, and the cutout will not recur.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after inserting the KNB-69L\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe TK-series radios use voltage-threshold bar indicators — each bar corresponds to a voltage bracket, not a percentage from a fuel gauge chip. A new pack at storage voltage sits at the lower end of the threshold scale, so the radio displays one bar short of full even though the cell is healthy. After a complete charge cycle, terminal voltage rises above the next threshold and the indicator corrects itself. If the bar count does not increase after a full charge, check that the dock contact pins are clean and making firm contact with the pack strip.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426314911834,"sku":"BWCS-KNB691TW-1","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426314944602,"sku":"BWCS-KNB691TW-2","price":55.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426314977370,"sku":"BWCS-KNB691TW-3","price":61.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-KNB691TW-1.webp?v=1779930634","url":"https:\/\/batteryweb.com\/products\/kenwood-tk-2400vp-replacement-battery-74v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}