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.
3S 11.1V 300mAh 30C LiPo Battery: RCY 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.
3S 11.1V 300mAh 30C LiPo Battery: RCY fits customers looking for Spektrum items in Spektrum Catalog, Spektrum Batteries, Spektrum Aircraft Electronics, with RC-MODEL support for choosing the right configuration.
3S 11.1V 300mAh 30C LiPo Battery: RCY 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 | SPMX3003SJ30 |
| Spektrum Category | Airplanes / Parts, Electronics & Accessories / Batteries |
| Connector Type | JST-RCY |
| Product Family | Spektrum Smart battery range |
| Application | UMX 3S airplanes |
| Compatibility Focus | Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering. |
| Battery Type | LiPo (3.7V per cell) |
| Battery Voltage | 11.1V |
| Number of Cells | 3 |
| Product Height | 0.7" (18 mm) |
| Product Length | 1.65" (42 mm) |
| Product Weight | 24.5g |
| Product Width | 0.74" (19 mm) |
| Maximum Charge Rate | 0.9 Amps (3C) |
| Maximum Continuous Discharge Rate | 30C |
| Capacity | 300mAh |
| Maximum Burst Discharge Rate | 30C |
| Maximum Continuous Discharge Current | 9 Amps |
| Discharge Lead Length | 2" (51 mm) |
Tags: Spektrum, SPMX3003SJ30, Spektrum Smart battery range, Spektrum Catalog, Spektrum Batteries, Spektrum Aircraft Electronics, RC-MODEL
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