Skip to main content
Smart Powerstage Air Bundle: 4000mAh 3S G2 LiPo Battery / S120 Charger

Smart Powerstage Air Bundle: 4000mAh 3S G2 LiPo Battery / S120 Charger


  • Brand:Spektrum
  • Product Code:SPMXPSA300
  • Availability:Availability on request

Prices are intentionally not displayed on the site. Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
Quote quantity Choose the requested quantity, select options/variants if available, and add the item to one combined quote request.

These selections are sent with the SKU, model and quantity so we can check fit and availability.

Why choose Smart Powerstage Air Bundle: 4000mAh 3S G2 LiPo Battery / S120 Charger through RC-MODEL?

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.

Fit and use

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.

  • Relevant category: Spektrum Catalog, Spektrum Aircraft Electronics, Spektrum Smart Technology
  • Product identification for inquiry: model SPMXPSA300 / SKU SPMXPSA300

Key details

  • Material: Soft Case Pack
  • 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

Before ordering

  • Confirm dimensions, power system, radio compatibility or material size before purchase.
  • Ask us to match required accessories, adhesives, hardware, batteries or replacement parts.
  • RC-MODEL helps with fit checks, availability, compatible accessories and a formal quote in Israel.

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.

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.
  • A money-savings one-box solution for RTF Basic aircraft
  • The Smart Air Powerstage Bundles will complete the purchase of RTF Basic aircraft and makes them ready to fly
  • Smart Technology is the easiest to use and safest battery charging technology available and completes the Smart Technology ecosystem in RTF Basic aircraft that features an Avian or telemetry capable ESCs with one-wire telemetry

Core Specifications

  • Manufacturer: Spektrum
  • Brand: Spektrum
  • Product Code: SPMXPSA300
  • Product Family: Spektrum Smart battery range
  • Application: Air
  • Compatibility Focus: Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering.
  • Spektrum Category: Airplanes / Parts, Electronics & Accessories / Powerstage Bundles
  • Capacity: 4000mAh
  • Auto Storage: Yes
  • Balance Lead Length: 1.3" (35 mm)
  • Battery Balance Connector: G2 Smart
  • Battery Temperature Monitoring: Yes
  • Battery Type: Smart Only
  • Battery Voltage: 11.1V
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.

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