Lithium Ion Polymer Battery Cell 606090 3.7V 7.4V 4000mAh 14.8Wh Rechargeable Li Polymer Battery Pack

Lithium Ion Polymer Battery Cell 606090 3.7V 7.4V 4000mAh 14.8Wh Rechargeable Li Polymer Battery Pack

Main Advantages:

‌Large Capacity‌: 4000mAh of actual capacity meets all-day use needs, eliminating battery anxiety. ‌

‌Small Size‌: Measuring 6×60×90mm, it's ideal for DIY power banks or handheld devices, balancing performance and portability. ‌

‌Cycle Life‌: Supports over 1000 charge-discharge cycles, maintaining stable performance even with long-term use. ‌

‌Compatibility‌: Compatible with a variety of management boards, suitable for mobile power banks, beauty devices, and other medical devices. ‌

Applications:

‌Mobile Power Banks‌: Replace traditional battery cells, improving battery life and reducing device size. ‌

‌Medical Devices‌: Handheld devices, such as beauty devices, require a balance between battery life and safety.

Compared with Ni-Mh/Ni-CD batteries:

Energy Density:
The energy density of lithium-polymer batteries typically ranges from 150-250 Wh/kg, while that of nickel-metal hydride batteries is approximately 60-120 Wh/kg. With the same capacity, lithium-polymer batteries are smaller and lighter. ‌

Safety:
Ni-metal hydride batteries are more stable in short-circuit or high-temperature environments, with a melting point as high as 400°C, making them less prone to spontaneous combustion. Li-polymer batteries, due to their solid-state electrolyte, are theoretically more resistant to crushing and puncture, but may present a risk of thermal runaway in high-temperature environments. ‌

Cycle Life:
Ni-metal hydride batteries can achieve up to 300-500 charge cycles, while lithium-polymer batteries generally exceed 1,000 cycles, with some reaching several thousand. ‌

Cost:
Ni-metal hydride batteries have lower production costs and a significant price advantage. Li-polymer batteries, due to their complex materials and processes, have higher initial manufacturing costs, but their price gradually decreases with large-scale production.

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