Description
The Crocks Ultra 11.1V 16800mAh 3S Drone Battery Pack 3S4P 335A Discharge Li-Ion NMC 42A
is engineered for endurance and extreme power — a perfect choice for high-thrust drones, UAVs, and professional RC systems. With 12 high-performance NMC cells configured as 3 in series × 4 in parallel, this pack delivers a high constant voltage of 11.1 V and a substantial energy reserve of 16.8 Ah, enabling long flights and sustained loads.
Remarkably, this pack is rated for a continuous discharge current of up to 335 A, making it capable of powering aggressive maneuvers, heavy payloads, or high-speed performance setups. The design emphasizes both energy and raw power, offering a rare combination of capacity and current.
Each NMC cell used in the pack (for example, a high-discharge 21700 or 18650) has been selected for its ability to handle very high currents with stable performance. Thanks to the parallel configuration, the pack can distribute load effectively across the cells, reducing thermal stress and improving durability. Balanced charging is supported via a multi-pin balance connector, which ensures that all parallel groups remain properly synchronized during charging cycles.
Mechanically, the pack is built with strong internal wiring, robust soldering or spot-weld points, and a high-current discharge lead designed to manage very large current flows reliably. The form factor is optimized for drone integration and mounts easily in the battery bay of large quadcopters and UAV frames.
Key Features
Huge Capacity (16,800 mAh): Long flight times for endurance missions or heavy-lift tasks.
Ultra-High Discharge (335 A): Sustained current capability for demanding power draw.
3S4P Cell Configuration: Balances voltage stability and current distribution.
NMC Chemistry: Reliable energy density, stable performance, and good cycle life.
Balanced Charging: Supports multi-cell balance to ensure safe charging and longer pack life.
Robust Design: High-current connectors and durable internal wiring.
High Power Density: Optimized for drones that require both capacity and extreme discharge.
Applications
Long-endurance quadcopters and exploration drones
Heavy-lift UAVs carrying cameras, sensors, or payloads
Racing or freestyle drones needing both capacity and power
Surveying / mapping drones that run long missions
Custom UAV builds where both current draw and flight time are critical
