How to assemble an ARF RC aircraft step by step
A general ARF assembly workflow for many aircraft: dry fit, hinges, servo installation, power setup, CG, control checks and first-flight preparation.
Smart Powerstage Air Bundle: 4000mAh 3S G2 LiPo Battery / S120 Charger is an RC product from Spektrum. This page focuses on what an end customer needs: fit, use cases, specifications and imagery, without prices or outbound supplier detours.
Smart Powerstage Air Bundle: 4000mAh 3S G2 LiPo Battery / S120 Charger fits customers looking for Spektrum items in Spektrum Catalog, Spektrum Aircraft Electronics, Spektrum Smart Technology, with RC-MODEL support for choosing the right configuration.
Smart Powerstage Air Bundle: 4000mAh 3S G2 LiPo Battery / S120 Charger is a Spektrum product intended for aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter. This page presents the practical buying information a customer needs before ordering: fit, SKU, image, category, specifications and usage advantages.
The content is written for purchasing through RC-MODEL, without supplier prices or links to competing stores.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
A general ARF assembly workflow for many aircraft: dry fit, hinges, servo installation, power setup, CG, control checks and first-flight preparation.
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
One of the most important setup guides: find the CG, install the flight battery, balance the aircraft and avoid nose-heavy or tail-heavy surprises.
A repeatable inspection routine for control direction, radio range, failsafe, battery, fasteners, propeller, CG and field readiness.
Ground checks, takeoff planning, trim passes, battery timing and first landing strategy for a new or repaired RC aircraft.
| Technical Specifications | |
| Manufacturer | Spektrum |
| Brand | Spektrum |
| Product Code | SPMXPSA300 |
| Spektrum Category | Airplanes / Parts, Electronics & Accessories / Powerstage Bundles |
| Connector Type | IC3 |
| Product Family | Spektrum Smart battery range |
| Application | Air |
| Compatibility Focus | Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering. |
| Battery Type | Smart Only |
| Battery Voltage | 11.1V |
| Number of Cells | 3 |
| Product Height | 0.94" (24 mm) |
| Product Length | 5.51" (140 mm) |
| Product Weight | 200g to 299g |
| Product Width | 1.69" (43 mm) |
| Programmable | Yes |
| Technology | Smart |
| Output Connector | IC3 |
| Wire Gauge | 12 AWG |
| Product Application | Air |
| Battery Balance Connector | G2 Smart |
| Hard Case | No |
| Maximum Charge Rate | 3 to 5 Amps |
| Watt Hours | 44.4 |
| Auto Storage | Yes |
| Capacity | 4000mAh |
| Charge Protection Circuitry | Yes |
| Discharge | 30C |
| Material | Soft Case Pack |
| Maximum Burst Discharge Rate | 30C |
| Normal/Standard Charge Current | 20A |
| Normal/Standard Charge Rate | 1C |
| Prop 65 | California Residents Prop 65 WARNINGS. |
| Roar Approved | No |
| Smart Technology | Yes |
| Maximum Continuous Discharge Current | 4A |
| Software Updates | Yes |
| Balance Lead Length | 1.3" (35 mm) |
| Number of Output Ports | 1 |
| Battery Temperature Monitoring | Yes |
| Low Input Voltage Protection | Yes |
| Selectable Charge Rate | No |
| Thermal Protection | Yes |
| Power (watts) | 20 - 49W |
| Power Source | USB |
| USB Power out | No |
Tags: Spektrum, SPMXPSA300, Spektrum Smart battery range, Spektrum Catalog, Spektrum Smart Technology, Smart Powerstage Bundles, Spektrum Aircraft Electronics, RC-MODEL
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