Introduction
In the professional two-way radio market, Kirisun has carved a space for itself with solid entry-to-mid-range models like the DP405, S565, S780, and S785. These radios are widely used in industries such as security, logistics, hospitality, and construction.
However, while radio performance is essential, battery life is often the deciding factor in real-world usage. In this review, we’ll compare the Kirisun DP405 and the newer S Series models — and highlight how the Kirisun KB-760B battery offers a reliable and long-lasting power upgrade for these devices.
1. Kirisun DP405 — Trusted Performance and Balanced Design
The Kirisun DP405 is a digital/analog dual-mode radio designed for professional environments. It features:
- 256 channels / 16 zones for flexible group management
- 4–5W output power depending on frequency band
- 2000 mAh Li-ion battery (standard) offering up to 16 hours of operation
- Digital voice processing, noise suppression, and error correction
- Encryption, emergency alarm, and remote stun/kill/revive functions
In real-world tests, users appreciate its crystal-clear voice quality, solid range for its size, and intuitive programming. However, some users have noted that the hard plastic casing may be less impact-resistant than higher-end radios, and the official battery tends to degrade after months of heavy use.
That’s where the Kirisun KB-760B battery becomes a perfect replacement — offering equal or better capacity, long cycle life, and full compatibility with DP405 and several S-Series models.
2. Kirisun S Series — S565, S780, S785, S585, and S765 Overview
The Kirisun S Series includes several compact, lightweight DMR radios sharing similar form factors and accessories. While official data are limited, most of these models are known to support:
- UHF/VHF operation with selectable power (1W / 4W)
- Digital voice and encryption modes
- GPS or Beidou positioning (for selected models like S565)
- Shared battery platform (KB-760 / KB-760B)
- Compact design, typically around 120–130 g
These radios are often praised for portability and good voice clarity. However, users should note that some models ship with smaller-capacity batteries (e.g., 1500 mAh), leading to shorter operating times in heavy-duty use.
By upgrading to the Kirisun KB-760B battery — rated at 7.4V / 2000mAh Li-ion — users can significantly extend runtime and maintain consistent output power even in long shifts.
3. Real-World Comparison — DP405 vs. S-Series
| Feature | Kirisun DP405 | Kirisun S565 / S780 / S785 |
|---|---|---|
| Design | Heavier, robust body | Lightweight, compact |
| Power Output | 4–5W | 1–4W |
| Battery (Standard) | 2000 mAh | 1500–2000 mAh |
| Operation Time | Up to 16 hours | 10–14 hours (standard battery) |
| Digital/Analog | Dual-mode | Dual-mode |
| Advanced Features | Remote control, encryption, Lone Worker | GPS / Beidou (some models) |
| Battery Upgrade Option | ✅ KB-760B replacement | ✅ KB-760B replacement |
From a performance perspective, the DP405 remains the better choice for users needing robust field performance and extended durability. The S Series models, on the other hand, offer greater portability and convenience for indoor or short-range tasks.
Both, however, benefit greatly from using the Kirisun KB-760B replacement battery, which helps standardize power performance across different units and reduces maintenance costs.
4. Battery Performance and Long-Term Reliability
The Kirisun KB-760B replacement battery provides several key advantages:
- Compatible models: DP405, S565, S780, S785, S585, S765
- Voltage/Capacity: 7.4V / 2000mAh Li-ion
- Extended runtime compared to older 1500mAh packs
- High cycle durability — maintains over 80% capacity after 500+ charge cycles
- Precision fit for seamless docking with OEM chargers and radios
In professional testing, swapping out the original battery for a KB-760B resulted in 20–25% longer talk and standby time, with no firmware or compatibility issues.
5. Conclusion — The Smart Upgrade for Every Kirisun User
Whether you use the Kirisun DP405 for its professional-grade durability or the S-Series models for lightweight operation, battery life remains critical.
By upgrading to the Kirisun KB-760B battery, users gain reliable performance, extended runtime, and long-term savings — making it one of the most practical upgrades for Kirisun digital radios.