Description
The Crocks Pack Samsung INR 21700 50S 11.1V 25000mAh 3S5P 225A Discharge Li-ion Drone Battery Pack
is a high-capacity, high-current Li-ion battery pack engineered to power large drones, UAVs, and demanding RC systems. Built from fifteen Samsung INR 21700-50S cells in a 3-series, 5-parallel layout, this pack delivers a nominal voltage of 11.1 V while offering a massive 25 Ah capacity—enabling long flight times and reliable endurance.
This pack is spec’d for a continuous discharge current of up to 225 A, making it well-suited for high-thrust motors, aggressive maneuvers, or payload-heavy missions. The use of Samsung 50S cells brings energy density and reliability; each cell has a nominal capacity of 5000 mAh.
The cells have a nominal voltage of 3.6 V and their datasheet allows a maximum continuous discharge of 25 A, or up to 45 A under temperature-limited conditions. Each cell weighs around 70 g and has dimensions approximately 21.1 mm in diameter × 70.5 mm in height.
The pack features a balance connector for 3S charging and a high-current discharge lead capable of handling large currents. Its robust mechanical construction and strong internal wiring ensure that it can manage the demands of heavy-duty drone operations.
Key Features
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Very High Capacity: 25,000 mAh (25 Ah) for long-endurance flights
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Large Current Capability: Spec’d for 225 A continuous discharge
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Premium Samsung Cells: Uses Samsung INR 21700-50S — reliable and high-energy
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3S5P Configuration: Optimal balance between energy and power delivery
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Balanced Charging Support: Ensures safe and even charging across cell groups
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Durable Build: Solid wiring and mechanical structure for drone use
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Energy Density Advantage: High Wh per kg, making it suitable for long-range drones
Applications
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Long-range quadcopters and endurance UAVs
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Heavy-lift drones carrying cameras or sensors
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Surveying and mapping drones
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Custom UAV builds requiring both capacity and power
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RC aircraft / planes needing reliable high-capacity power
