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.
14.8V 300mAh 4S 30C LiPo Battery
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
14.8V 300mAh 4S 30C LiPo Battery 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.
Key Advantages
- Organized under the Spektrum Smart battery range.
- Intended for aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter.
- Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering.
- Includes local product imagery and structured specifications for easier comparison inside RC-MODEL.
- Spektrum Smart compatibility is highlighted where relevant for batteries, chargers, ESCs or telemetry-aware systems.
Core Specifications
- Manufacturer: Spektrum
- Brand: Spektrum
- Product Code: SPMX3004SJ30
- Product Family: Spektrum Smart battery range
- Application: Airplane
- Compatibility Focus: Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering.
- Spektrum Category: Airplanes / Parts, Electronics & Accessories / Batteries
- Capacity: 30C
- Battery Type: LiPo (3.7V per cell)
- Battery Voltage: 14.8V
- Connector Type: JST-RCY
- Hard Case: No
- Number of Cells: 4
- Product Height: 0.78" (20 mm)
Relevant RC Academy guides
Learn before you buy
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
Servo selection: torque, speed, gears and voltage
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
How to balance an RC aircraft and find the correct CG
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.
Mandatory pre-flight checks for safer RC flying
A repeatable inspection routine for control direction, radio range, failsafe, battery, fasteners, propeller, CG and field readiness.
How to perform the first test flight of an RC aircraft
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 | SPMX3004SJ30 |
| Spektrum Category | Airplanes / Parts, Electronics & Accessories / Batteries |
| Connector Type | JST-RCY |
| Product Family | Spektrum Smart battery range |
| Application | Airplane |
| Compatibility Focus | Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering. |
| Battery Type | LiPo (3.7V per cell) |
| Battery Voltage | 14.8V |
| Number of Cells | 4 |
| Product Height | 0.78" (20 mm) |
| Product Length | 1.69" (43 mm) |
| Product Weight | 34g |
| Product Width | 0.82" (21 mm) |
| Hard Case | No |
| Capacity | 30C |
Tags: Spektrum, SPMX3004SJ30, Spektrum Smart battery range, Spektrum Catalog, Spektrum Batteries, Spektrum Aircraft Electronics, RC-MODEL