High-capacity soft pack for direct UAV integration. Higher current output in the same compact width as the PS3 Series, designed for platforms that need more endurance without changing the cell footprint.
| Parameter | Value |
|---|---|
| Typical Capacity | 22,000 mAh |
| Nominal Capacity | 21,200 mAh |
| Nominal Voltage @0.2C | 21.6V (3.6V/cell) |
| Typical Energy | 475 Wh |
| AC Impedance @1kHz | ≤13 mΩ |
| Charge Cut-off Voltage (cell) | 4.2V |
| Charge Cut-off Voltage (pack) | 25.2V |
| Max. Charge Current | 1C / 22A |
| Parameter | Value |
|---|---|
| Nominal Discharge Current | 1C / 22A |
| Cut-off Voltage | 15V |
| Continuous Discharge (60s @25°C) | 130A |
| Burst Discharge (10s @25°C) | 180A |
| Continuous Discharge Power | 2,808W |
| Burst Discharge Power | 3,888W |
| Condition | Range |
|---|---|
| Charge | 0°C to +45°C |
| Discharge | -20°C to +60°C |
| Storage ≤1 month | -20°C to +45°C |
| Storage >1 month | -20°C to +30°C |
| Limit Charge (cell surface) | 0°C to +55°C |
| Limit Discharge (cell surface) | -20°C to +85°C |
| Parameter | Value |
|---|---|
| Configuration | 6S2P |
| Thickness | ≤101mm |
| Width | ≤74mm |
| Length | ≤141mm |
| Cable Length L1 | 100 ±10mm |
| Cable Length L2 | 60 ±10mm |
| Approx. Weight | 1,760g |
| PVC Sleeve | Yellow |
| Discharge Connector | QS8P-L-F / AWG 3239 8# |
| Balance Connector | JST-XHP-7P Reversed |
The FBC7871125PS3 6S2P is a high-capacity 6S drone battery built on ampKRAFT’s PS3 soft pack cell technology. In a 6S2P configuration, two parallel cell strings double the capacity to a nominal 21,200mAh (typical 22,000mAh) while maintaining the same 21.6V nominal voltage as the 6S1P variant. The result is 475Wh of usable energy at a weight of 1,760g.
The 6S2P configuration also increases the continuous discharge current to 130A and burst discharge to 180A, making this pack well suited for platforms with higher sustained power demand. The lower AC impedance of ≤13 mΩ compared to the 6S1P variant reflects the parallel cell architecture and contributes to a flatter voltage curve under load.
At 101mm thickness, the pack is deeper than the 6S1P version but retains the same 74mm width and 141mm length, allowing it to fit into airframe designs that can accommodate the additional thickness for the benefit of doubled capacity and current capability.
For development teams building medium-payload platforms or endurance-focused UAVs, the 6S2P configuration offers a practical step up from the 6S1P without requiring a change in voltage architecture or charging setup.
Sourcing a professional 6S drone battery means more than matching a voltage and capacity spec. Flight-critical applications demand consistent cell quality, verified discharge performance, and a supplier who understands the difference between a datasheet and a flying platform.
ampKRAFT’s PS3 Series soft pack batteries are manufactured under a fully vertically integrated production process, with proprietary intellectual property covering cell chemistry, materials, and quality control. Every batch is traceable, and every cell is built to the same specification as the one before it.
For UAV engineers and procurement teams working on professional drone platforms, inspection systems, or defense-adjacent applications, ampKRAFT provides direct access to the source technology, not a rebranded off-the-shelf product. Custom configurations, alternative connectors, and volume pricing are available on request, supported by a dedicated engineering team with hands-on UAV application experience.
Whether you are integrating a 21.6V soft pack battery into an existing airframe or developing a new UAV platform from scratch, ampKRAFT is the right partner to have early in the process.
Everything you need to know about the FBC7871125PS3 6S2P soft pack battery. If your question is not covered here, our engineering team is happy to help directly.
The 6S1P and 6S2P variants share the same PS3 cell technology and 21.6V nominal voltage. The 6S2P configuration connects two parallel cell strings, which doubles the capacity from 10,600mAh to 21,200mAh nominal and increases the continuous discharge current from 88A to 130A. The AC impedance also drops from ≤22 mΩ to ≤13 mΩ, reflecting the lower internal resistance of the parallel architecture. The trade-off is a higher weight of 1,760g versus 880g and an increased thickness of 101mm versus 51.5mm. For applications that need more endurance or higher sustained current without changing the voltage level, the 6S2P is the direct upgrade path.
The FBC7871125PS3 6S2P supports a continuous discharge of 130A over 60 seconds at 25°C and a burst discharge of 180A for up to 10 seconds. Continuous discharge power is 2,808W and burst discharge power reaches 3,888W. The parallel cell architecture distributes current across two cell strings simultaneously, which reduces thermal load per cell and contributes to a stable voltage output across the full discharge range.
The FBC7871125PS3 6S2P is designed for medium-payload UAV platforms, endurance-focused mapping and surveying missions, and industrial inspection systems where longer flight time is a priority. The higher capacity of 475Wh makes it a practical choice for platforms that require extended on-station time or carry heavier sensor payloads. For very light platforms or training use cases where weight is the primary constraint, the 6S1P variant at 880g may be the better fit.
The discharge connector is a QS8P-L-F (AWG 3239 8#), which is a widely used high-current connector in professional UAV applications. The balance connector is a JST-XHP-7P Reversed. If your platform uses a different connector standard, ampKRAFT can supply alternative configurations on request. Our engineering team can advise on connector compatibility and integration requirements for your specific airframe.
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