New energy

KNS 400Wh/kg 6S 31000mAh 21V Semi-Solid State Battery for UAV Drones

<p>The KNS semi-solid state battery delivers industry-leading energy density of 400Wh/kg, enabling significantly longer flight times for UAV drones. With a 6S configuration, 31,000mAh capacity, and 21V nominal voltage, this high-performance power source is designed for heavy-lift drones, long-endurance missions, and demanding industrial applications. The advanced semi-solid state technology ensures enhanced safety, …

About this product

Product information from the supplier.

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Product Advantage


Ultra-High Energy Density
400Wh/kg delivers up to 60% longer flight time compared to conventional LiPo batteries.
Extended Endurance
31,000mAh capacity powers heavy-lift UAVs for demanding missions.
Enhanced Safety
Semi-solid state electrolyte reduces thermal runaway risk.
Long Cycle Life
Reliable performance over hundreds of charge/discharge cycles.
Stable Output
Consistent 21V / 6S power for professional drone operations.


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Parameter Property


Model

KNS-400-31AH6S

Voltage

21V

Capacity

31000mAh

Continuous Discharge

3C

Max.Discharge

5C

Charge

0.5-1C

Energy

651Wh

Energy density

400Wh/kg

217*89*68

192*72*67mm

Weight

1860g

Plug

XT90S

Charge Working Condition Temperature

0℃~45℃

Discharge Working Condition Temperature

-10℃~55℃

Cycle life

500 cycles


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Application Description


The KNS 400Wh/kg semi-solid state battery is specifically engineered for high-demand UAV applications where extended    flight time, reliability, and safety are critical. It is ideal for:

Heavy-lift multirotor drones – Aerial work such as high-rise window cleaning, construction inspection, and cargo    delivery.

Long-endurance mapping & surveying UAVs – Extended missions over large areas without frequent battery swaps.

Industrial inspection drones – Power line, pipeline, wind turbine, and bridge inspections requiring stable,    long-duration flights.

Emergency response & search & rescue – Maximized loiter time for critical operations.

VTOL & eVTOL aircraft – High energy density for vertical takeoff and landing platforms.

By replacing conventional LiPo batteries with the KNS semi-solid state battery, operators can achieve up to 60%    longer flight time per charge while maintaining the same payload weight. The advanced semi-solid electrolyte    provides enhanced thermal stability and safety, making it suitable for commercial and industrial drone fleets    operating in diverse environments.




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Packages and shipping


Individually packed with shock-absorbing foam and anti-static materials. Fully compliant with UN38.3 for safe    air/sea transport. Express air or sea freight available. Terminal insulation and hazard labels included.



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Our factory


KNS operates a modern manufacturing facility spanning over 3,000 square meters, equipped with five advanced    production lines and capable of producing more than 5,000 battery units per day. Our team of over 200 dedicated    employees includes three professors and more than 20 research engineers, ensuring that every battery benefits from    deep technical expertise and rigorous quality control. We hold ISO9001:2015 certification, and our production    processes adhere to strict international standards. From raw material inspection to finished product testing, every    step is carefully managed to deliver consistent, highperformance solidstate batteries. Our factory is not just a    production site – it is the foundation of our promise to provide reliable, Agrade power solutions to drone    professionals worldwide.



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Why Choose KNS


Choose KNS for ultra-high energy density semi-solid state batteries that extend UAV flight time by up to 60%, backed    by safety, customization, and reliable quality.