
OEM KNB-78L Battery for Kenwood TK-2173 TK-2360 TK-3140 TK-3148 TK-3170 Two-Way Radios
Keep your Kenwood two-way radio operating at its best with the OEM KNB-78L replacement battery. Designed for reliable communication in professional, industrial, security, and commercial environments, this high-performance battery delivers stable power output, dependable runtime, and long-lasting durability.
Built with premium Grade A lithium-ion cells, the KNB-78L battery provides consistent energy delivery and efficient charging performance, helping your radio stay powered throughout the workday. Whether you're replacing an aging battery or adding a spare to your equipment kit, this OEM-compatible battery offers an excellent combination of reliability, performance, and value.
Engineered for seamless compatibility with multiple Kenwood radio models, the KNB-78L ensures a secure fit and dependable operation when clear communication matters most.
Product Description
The OEM KNB-78L battery is designed as a direct replacement for compatible Kenwood portable radios, providing reliable power for daily communication needs. Featuring high-quality lithium-ion cells and advanced protection circuitry, it delivers stable performance while helping extend battery service life.
Ideal for security teams, event staff, construction crews, warehouse operations, and business communications, this Kenwood radio battery offers dependable performance in demanding environments.
Technical Specifications
| Parameter | Specification |
| Battery Model | KNB-78L / KNB-78LM |
| Chemistry | Lithium-Ion (Li-ion) |
| Voltage | 7.4 V |
| Capacity | 2860 mAh (Typical) / 22 Wh |
| Cell Quality | Premium Japanese/Tier-1 internal cells |
| IP Rating | IP67 Dust and Water Resistant (when mated to compatible radio) |
| Operating Temperature | -20°C to +60°C (-4°F to +140°F) |
Core Performance Features
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Extended Shift Life: The 2860mAh high-capacity configuration provides up to 14–18 hours of typical duty cycle operation, eliminating the need for mid-shift swaps.
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No Memory Effect: Premium Lithium-Ion chemistry allows you to top off the battery at any charge state without degrading its long-term storage capacity.
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Rugged Housing: Polycarbonate impact-resistant casing provides excellent structural durability against drops, vibrations, and punctures in harsh work conditions.
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Gold-Plated Contacts: Precision engineered contacts resist oxidation and corrosion, ensuring seamless conductivity and preventing sudden power dropouts.
Complete Compatibility Matrix
This battery pack is fully compatible with an extensive lineup of Kenwood NX and TK series analog/digital portable two-way radios, as well as multi-unit rapid chargers.
Supported Kenwood Radios
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TK Series: TK-2140, TK-2148, TK-2160, TK-2168, TK-2170, TK-2170M, TK-2173, TK-2360
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TK Series (UHF): TK-3140, TK-3148, TK-3160, TK-3168, TK-3170, TK-3173, TK-3178, TK-3360
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NX Series: NX-220, NX-320, NX-420, NX-3200, NX-3220, NX-3230, NX-3300, NX-3320, NX-3330, NX-3400, NX-3420
Cross-Compatible Battery Part Numbers
Directly replaces or upgrades the following Kenwood battery profiles:
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KNB-24L, KNB-35L, KNB-55L, KNB-57L, KNB-79LC
Why Choose This KNB-78L Battery?
If you rely on your two-way radio for clear and dependable communication, choosing a quality replacement battery is essential. This OEM KNB-78L battery is built to provide consistent performance, reliable runtime, and long-term durability for professional communication systems.
Compared with lower-quality alternatives, it offers better compatibility, improved charging efficiency, and enhanced safety protection, making it a smart and cost-effective choice for maintaining your Kenwood radio fleet.
| Battery Capacity | 2000mAh/14.8Wh |
| Voltage | 7.4V |
| Model No | KNB-57LI |
| Warranty | 1 Year |
🔋 Lithium-Ion Battery Conditioning
For optimal electrochemical performance, new lithium-ion batteries should undergo 2–3 complete charge and discharge cycles before reaching full capacity.
This stabilization phase allows the internal cell chemistry to achieve balanced ion distribution, ensuring maximum runtime, stable voltage output, and extended cycle life.
After this initial conditioning period, no further full discharge cycles are required.
🛡 Premium Warranty Protection
- 12-Month Limited Manufacturer Warranty
- 60-Day No-Hassle Money Back Guarantee
- Up to 60 Days Refund Window (Policy Based)
- Replacement for defective or misrepresented items
- Dedicated customer service response within 24 hours
🚚 Professional Shipping Standards
- Orders processed within 24 business hours (excluding weekends & holidays)
- Real-time tracking number provided upon dispatch
- Transit time varies by region and logistics carrier
- Please verify your shipping address before order confirmation
- Address changes are not possible once shipment is dispatched
📌 Product-Specific Notice
📩 Customer Care Commitment
We are committed to delivering professional-grade battery solutions and responsive after-sales service. If you experience any issues, please contact our support team before leaving feedback.
✓ Safety & Quality Assurance
- Certified to CE, RoHS, UN38.3 international safety standards.
- Built-in protection against overcharging, overheating, and short circuits.
- Shipped in compliance with IATA regulations for lithium batteries.
- Compatible with OEM chargers. No firmware modification required.
Questions about compatibility? Contact us with your device model number before ordering.
Cao Chuanping
Power Systems Consultant · 8+ years in replacement battery sourcing & evaluation · View profile →
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