ENL-KNB57 7.4V 2000mAh Li-ion Replacement Battery for Kenwood TK-2140 / TK-3140 / TK-2160 / TK-3160 / TK-2170 / TK-3170 Series Two-way Radios

The ENL-KNB57 replacement battery is fully compatible with the following Kenwood TK-2140 / TK-3140 / TK-2160 / TK-3160 / TK-2170 / TK-3170 series two-way radio models:

✅ Faithful OEM Replacement for TK-2140 / TK-3140 / TK-2160 / TK-3160 Series Radios
Direct replacement for KENWOOD OEM part KNB-57L, supporting 21 radio models including TK-2140, TK-2148, TK-2140E, TK-2160E, TK-2160M, TK-2170E, TK-2170E3, TK-2170M, TK-2360E, TK-2360M, TK-3140, TK-3148, TK-3140E, TK-3160, TK-3160M, TK-3170E, TK-3170E4, TK-3170E6, TK-3178, TK-3360E and TK-3360M. Plug-and-play fit, no modification required.

✅ Industrial Grade Li-ion Cell Pack with 5-Protection BMS
Premium long-cycle Li-ion cells deliver stable 7.4V output and rated 2000mAh capacity for typical 10-12 hour shift operation. Built-in smart BMS module provides over current protection (OCP), over charge protection (OVP), over discharge protection (UVP), temperature sensor and reverse polarity protection — comprehensive safeguard against field failures.

✅ Featherweight ABS/PC Shell & Ultrasonic Welding Sealing
Robust ABS/PC composite housing with ultrasonic sonic welding sealing, golden plated brass low-resistance contacts — anti-drop, dustproof and moisture resistant. At only 120g net weight, this is among the lightest KNB-57L replacement batteries on the market, reducing operator fatigue during extended full-shift carry.

• ⭐ OEM KNB-57L Replacement — Faithfully matches original dimensions (11.20*6.20*2.50cm) and weight (120g), drop-in fit for all TK-2140/3140/2160/3160/2170/3170 series radios without chassis modification
• ⭐ Premium Long Cycle Li-ion Cells — High quality cells with stable discharge curve, 800-1000 charge cycle service life and low self-discharge, supports 10-12 hour continuous shift operation
• ⭐ Smart 5-Protection BMS Circuit — OCP + OVP + UVP + Temperature Sensor + Reverse Polarity, prevents over-charge and over-discharge damage, extends overall battery service life
• ⭐ Ultra-Lightweight Slim Form Factor — 120g net weight with compact 2.50cm thickness, the lightest KNB-57L replacement in its class, comfortable to carry on belt clip for full-shift wear
• ⭐ Industrial Craftsmanship & Warranty — Manufactured under strict aging test procedure, OEM private label and bulk customization available, 12-month full quality warranty

• ⚠ Do not disassemble, puncture or modify the battery housing — Li-ion cell damage may cause leakage, overheating or even fire/explosion.

• ⚠ Stop using immediately if the battery shows any sign of swelling, heating, leakage, discoloration or strange odor, and dispose of it at a certified Li-ion recycling station.

• ⚠ Only charge with a Li-ion specific CC/CV (Constant Current / Constant Voltage) charger designed for 7.4V Li-ion packs — do NOT use old Ni-MH or Ni-CD two-way radio chargers, as they may cause over-charge and fire hazard.

• ⚠ Keep battery terminals away from metal objects such as coins, keys and jewelry to prevent accidental short-circuit — do not expose the battery to high temperature above 60 degrees C or direct sunlight for extended periods.