The KNB-57L replacement Li-ion battery pack is a commercial-grade, high-energy-density power cell precision-engineered to restore long-lasting operational field life to professional Kenwood handheld transceivers. Formulated using premium Lithium-Ion (Li-ion) chemistry, this high-performance battery pack provides continuous, stable voltage output while eliminating the restrictive “memory effect” common in legacy cell architectures. It serves as an essential logistics procurement component for public safety forces, heavy industrial complexes, large-scale security deployment fleets, and high-volume B2B radiocommunication accessory wholesale networks looking to keep active communication terminals operating smoothly across extended work shifts.
The mechanical architecture of the KNB-57L is built with heavy-duty, impact-resistant composite housing designed to withstand drops, structural shocks, and rigorous daily clip-in wear. Delivering a nominal 7.4V (compatible with 7.2V systems) and a robust 2000mAh capacity threshold, the internal battery cells are balanced to maintain reliable duty-cycle performance under sustained high-power RF transmission loads. The chassis layout features clean, low-wear gold-plated terminal contact tabs to ensure a flush-fit electrical connection and efficient energy transfer directly to the walkie-talkie chassis, preventing sudden terminal drops or power fluctuations during critical operations.
Engineered for seamless cross-platform utility, this original-spec replacement battery provides an exact mechanical latch alignment across an extensive selection of Kenwood land mobile radios. It offers certified hardware compatibility with the NEXEDGE NX-220 and NX-320 digital platforms, as well as classic analog workhorses like the TK-2140, TK-2160, TK-2170, TK-3140, TK-3160, and TK-3170 variants. Delivered ready for immediate field integration, this durable Li-ion pack ensures immediate technical system alignment, tool-free slot insertion, and complete multi-shift fleet deployment readiness.
| Technical Specification Parameter | Specifications |
|---|---|
| Hardware Model Designation | KNB-57L (High-Capacity Fleet Series) |
| Primary Component Classification | Replacement Handheld Transceiver Power Pack |
| Electrochemical System Base | Lithium-Ion (Premium Li-ion Cells) |
| Nominal System Voltage Output | 7.4 V DC (Fully Compatible with 7.2V Architecture) |
| Rated Energy Storage Capacity | 2000 mAh High-Capacity Continuous Run Path |
| Memory Effect Vulnerability | None (Supports Partial Charging/Topping Cycles) |
| Chassis Contact Interface Layout | Gold-Plated Low-Wear Flush-Fit Connection Tabs |
| Primary Structural Housing | Impact-Resistant Textured Polymer Composite Shell |
| Verified Hardware Compatibility Scope | Kenwood NEXEDGE NX-220, NX-320 | Kenwood TK-2140, TK-2148, TK-2160, TK-2168, TK-2170, TK-3140, TK-3148, TK-3160, TK-3168, TK-3170 |
| Primary Fleet Utility Purpose | Turnkey fleet battery asset replenishment, multi-shift duty cycle extension, hardware wear recovery, and active terminal power protection |
