{"product_id":"7-4v-2000mah-knb-57l-replacement-battery-for-kenwood-radios-2-pack","title":"7.4V 2000mAh KNB-57L Replacement Battery for Kenwood Radios - 2 Pack","description":"\u003cp\u003eIn this review the author examines the 2 pack of KNB-57L replacement batteries and concludes they are a straightforward, cost-effective option for users who need reliable standby power for Kenwood two-way radios. Suitable for fleets, installers, and field technicians who rely on TK and NX series radios, the biggest reason to buy is the direct compatibility and factory-new Li-ion chemistry that restores runtime without replacing the radio. The review is based on the product spec sheet and typical field expectations for a 7.4V, 2000mAh replacement cell.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Works with a broad range of Kenwood TK and NX radios so users can replace worn packs without changing chargers or accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 2000mAh capacity provides noticeably longer run time than older, diminished batteries and is suitable for a full shift in many use cases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e Li-ion construction offers a good balance of energy density and weight so packs remain compact at about 116g each.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory New:\u003c\/strong\u003e Sold as factory packed and 100% new which reduces the risk of degraded cells often found in used or gray-market packs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-Pack Convenience:\u003c\/strong\u003e Includes two matching batteries so teams can rotate spares or replace both worn cells at once for consistent performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis product is aimed at professionals and small organizations that use Kenwood TK- and NX-series two-way radios and need an affordable, direct-fit replacement battery. It is especially relevant for maintenance staff, event crews, security teams, and construction crews who value quick swap capability and predictable runtime.\u003c\/p\u003e\u003cp\u003eUsers who should look elsewhere include those who require extended-life aftermarket packs with higher-than-stock capacity, proprietary rapid-charge systems, or batteries explicitly certified by the radio manufacturer for warranty service. Also avoid if you need a battery that ships fully charged and ready for immediate heavy use.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDirect fit for many Kenwood models, simplifying replacement and compatibility with existing chargers.\u003c\/li\u003e\n\u003cli\u003e2000mAh Li-ion capacity restores usable runtime for full-shift operation in typical deployments.\u003c\/li\u003e\n\u003cli\u003eFactory new condition reduces the chance of premature failure compared with used replacements.\u003c\/li\u003e\n\u003cli\u003eTwo-pack format provides spare power without needing separate orders.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eShips partially discharged, so a charge cycle is required before first use to reach full capacity.\u003c\/li\u003e\n\u003cli\u003eNot an OEM-labeled pack, which may matter to buyers who require manufacturer-authorized parts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e7.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e2000mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLi-ion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (per piece)\u003c\/td\u003e\n\u003ctd\u003e116g \/ 4oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003e2 x KNB-57Li replacement battery (factory packed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eKenwood TK-2170 TK-2140 TK-2160 TK-3140 TK-3160 TK-3173 NX-220 NX-320 NX-3220 NX-3320 NX-3200 NX-3300 NX-3400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eFor teams and technicians who need a dependable, inexpensive way to return Kenwood TK and NX radios to solid runtime, this 2 pack of 7.4V 2000mAh replacement batteries is a practical choice. It delivers the expected voltage and capacity, arrives factory new, and includes two packs for immediate rotation - good value for routine replacements though not a substitute for OEM warranty parts.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDo the batteries arrive fully charged?\u003c\/strong\u003e\u003cbr\u003eThey are not shipped fully charged; charge them in your compatible charger until the charger indicates a green or complete state before first use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill these fit my Kenwood KNB-57L charger base?\u003c\/strong\u003e\u003cbr\u003eYes, they are listed as compatible with KNB-57L and fit common charger bases such as the KSC-25 style used with the same form factor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these original manufacturer batteries?\u003c\/strong\u003e\u003cbr\u003eThe pack is factory packed and new but is sold as a compatible replacement rather than an OEM-branded battery, which may matter for warranty considerations.\u003c\/p\u003e","brand":"Vineyuan","offers":[{"title":"Default Title","offer_id":48234504257755,"sku":"B08S6TTQ6G","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71IIeOsx4lS._AC_SL1500.jpg?v=1770732528","url":"https:\/\/gearmusthave.com\/products\/7-4v-2000mah-knb-57l-replacement-battery-for-kenwood-radios-2-pack","provider":"GearMustHave","version":"1.0","type":"link"}