Lithium Polymer Pouch Battery in Two-Way Radios

Before the advent of lithium batteries, two-way radios relied on various power solutions such as nickel-cadmium, nickel-metal hydride, and alkaline batteries. These power sources were complemented by different supply methods, including disposable batteries, rechargeable batteries, and external power sources. As technology advanced, lithium batteries became the primary power source for portable communication devices like two-way radios, offering improved performance in diverse environments.

Popular brands and models in the two-way radio market, such as Motorola GP328, Kenwood TK-3302, and Baofeng UV-5R, have all traditionally relied on these older battery technologies. However, as users demand longer operational times and better performance under extreme conditions, lithium batteries have become the preferred choice.

In industrial settings, direct and uninterrupted communication is crucial for efficiency, particularly in scenarios like high-altitude operations or remote command. Traditional battery options like nickel-cadmium and nickel-metal hydride often failed to meet the rigorous demands of modern industrial applications, especially under extreme conditions. Consequently, there was a need for a more robust power solution that could withstand these challenges.

Requirements and Challenges

• Capacity: Ensuring long operational hours.
• Temperature Performance: Functionality in both high and low temperatures.
• Safety Protections: Safeguards against overcharging, over-discharging, and short circuits.
• Durability: Resistance to impacts, drops, and environmental stressors.
• Low Self-Discharge Rate: Minimizing energy loss during periods of non-use.
• Efficient Charge-Discharge Cycles: Prolonging battery life and performance.

Traditional batteries often fell short in these areas, leading to insufficient battery life, high self-discharge rates, frequent replacements (increasing costs), and prolonged charging times. Moreover, safety concerns under extreme conditions further highlighted the need for a better solution.

In the market, typical two-way radio battery capacities range from 600mAh, 800mAh, 1100mAh, to 1500mAh, with voltages commonly at 3.6V, 4.8V, 6V, and 7.2V. For instance, the power of a battery can be calculated by multiplying current by voltage, such as 6V x 1500mAh = 9W.

Solution

MOTOMA’s lithium battery solution for two-way radios addresses these challenges by using a battery pack with a nominal voltage of 7.2V, achieved by connecting 7.4V lithium battery pack. The nominal capacity of the pack is 1500mAh or higher, providing extended talk time and standby periods.

Key features include:

• Safety Structure Design: Enhanced protection against environmental and mechanical risks.
• Wide Temperature Material System: Ensures reliable performance in extreme temperatures.
• High Discharge Rate: Optimized for demanding operational requirements.
• High-Density Materials: Contributes to the compact size while maintaining high capacity.

This solution not only meets but exceeds the customer’s specific parameter requirements, ensuring reliable and efficient power for their two-way radios.

Selected Battery Model