Skip to content
  • 🛍️ Don't miss out on big discounts and free shipping! 🛍️
  • 🛍️ Don't miss out on big discounts and free shipping! 🛍️
Radio Control & Model ShopRadio Control & Model Shop
  • Menu
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Fly
    • Replacement Parts
    • Rockets
    • Aircraft
    • Skydog Kites
    • Bags, Boxes & Cases
    • Flight Simulators
  • Drive
    • 1/18, 1/24, 1/36 Scale
    • Batteries
    • Pine Car Derby
    • 1/10 Scale
    • Vehicle Bodies
    • Replacement Parts
    • Tires & Wheels
    • 1/5, 1/6, 1/8 Scale
    • Motors and ESC’s
    • 1/12, 1/14, 1/16 Scale
  • Drones
    • Drone Parts
    • Goggles, Headsets
    • Clothing and Mugs
    • Video Downlinks & Assy
    • SMA / RCA
    • Memory Cards
    • Antennas
    • Flight Training
  • Telescopes/Optics
    • Eyepieces
    • Camera & Eyepiece Adpt
    • Cameras & Accessories
    • Mounts and Tripods
    • Telescope Accy.
    • Binoculars
    • Filters & Lenses
    • Astro Imaging
  • Power
    • Speed Controllers
    • Chargers & Meters
    • LiPo
    • Gas & Glow Items
    • Lighting
    • Meters & Balancers
    • Soldering Supplies
    • Misc. Battery Accy
    • Trans/Rec Packs
    • Individual Cells
 

Spektrum 2 Cell 4000mAh 7.4v LiPo Tx Battery: DX8, DX9

Home / Power / LiPo
  • Spektrum 3 Cell 800mAh 11.1V 50C LiPo, 18AWG JST -Radio Control & Model Shop 16045 SPMX8003SJ50 1 900
  • DJI Matrice 350 BS65 Intelligent Battery Station -Radio Control & Model Shop DJI BS65 1 900
New
Spektrum 2 Cell 4000mAh 7.4v LiPo Tx Battery: DX8, DX9

$79.99 Original price was: $79.99.$55.99Current price is: $55.99.

Buy Now
SKU: YXRSY 5490296520853 Categories: LiPo, Power Tags: Cellcount_2-cell, Recpack_, Spektrum
  • Service with a smile, always online.
  • Effortless solutions, excellent customer care.
  • Your satisfaction is 100% guaranteed.
  • No-Questions-Asked Returns
Browse
  • Drive
    • 1/10 Scale
    • 1/12, 1/14, 1/16 Scale
    • 1/18, 1/24, 1/36 Scale
    • 1/5, 1/6, 1/8 Scale
    • Batteries
    • Motors and ESC's
    • Pine Car Derby
    • Replacement Parts
    • Tires & Wheels
    • Vehicle Bodies
  • Drones
    • Antennas
    • Clothing and Mugs
    • Drone Parts
    • Flight Training
    • Goggles, Headsets
    • Memory Cards
    • SMA / RCA
    • Video Downlinks & Assy
  • Fly
    • Aircraft
    • Bags, Boxes & Cases
    • Flight Simulators
    • Replacement Parts
    • Rockets
    • Skydog Kites
  • Power
    • Chargers & Meters
    • Gas & Glow Items
    • Individual Cells
    • Lighting
    • LiPo
    • Meters & Balancers
    • Misc. Battery Accy
    • Soldering Supplies
    • Speed Controllers
    • Trans/Rec Packs
  • Telescopes/Optics
    • Astro Imaging
    • Binoculars
    • Camera & Eyepiece Adpt
    • Cameras & Accessories
    • Eyepieces
    • Filters & Lenses
    • Mounts and Tripods
    • Telescope Accy.
  • Uncategorized
  • Description
  • Reviews (0)

4000mAh LiPo Transmitter Battery: DX8

Key Features:
• Built-in cell balancer
• Built-in safety current prevents over charging

Overview:
The 4000 2S LiPo offers not only double the flight time as the stock DX8 battery but also advanced safety and features.

It also includes a built in safety current that shuts the battery, to avoid overcharging and damaging the battery and radio. Plus a built in balancing system to make sure you get the longest life and power from your pack.

Reviews

There are no reviews yet.

Be the first to review “Spektrum 2 Cell 4000mAh 7.4v LiPo Tx Battery: DX8, DX9” Cancel reply

Related products

New
Spektrum 3 Cell 5000mAh 11.1V 100C Smart LiPo, Hardcase: IC5
Quick View

Batteries

Spektrum 3 Cell 5000mAh 11.1V 100C Smart LiPo, Hardcase: IC5

$99.99 Original price was: $99.99.$69.99Current price is: $69.99.
New
Spektrum 2 Cell 4100mAh 7.6V Smart Pro Race HV LiPo 120C: 5mm
Quick View

Batteries

Spektrum 2 Cell 4100mAh 7.6V Smart Pro Race HV LiPo 120C: 5mm

$59.99 Original price was: $59.99.$41.99Current price is: $41.99.
New
Spektrum Wireless Simulator Dongle WS2000
Quick View

Flight Simulators

Spektrum Wireless Simulator Dongle WS2000

$44.99 Original price was: $44.99.$31.49Current price is: $31.49.
New
Spektrum Firma 85A Brushless Smart ESC/4000Kv Sensorless Motor Combo
Quick View

Drive

Spektrum Firma 85A Brushless Smart ESC/4000Kv Sensorless Motor Combo

$104.99 Original price was: $104.99.$73.49Current price is: $73.49.
New
Spektrum Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv
Quick View

Drive

Spektrum Firma 2-in-1 Brushless Crawler Motor/ESC: 2300Kv

$149.99 Original price was: $149.99.$96.99Current price is: $96.99.
New
Spektrum Firma 1250Kv, 6.5mm Bullet Brushless Motor
Quick View

Drive

Spektrum Firma 1250Kv, 6.5mm Bullet Brushless Motor

$134.99 Original price was: $134.99.$94.49Current price is: $94.49.
New
Spektrum Smart Charger Case
Quick View

Bags, Boxes & Cases

Spektrum Smart Charger Case

$35.99 Original price was: $35.99.$25.19Current price is: $25.19.
New
Spektrum 3 Cell 2200mAh 11.1V 50C Smart G1 LiPo W/IC3
Quick View

LiPo

Spektrum 3 Cell 2200mAh 11.1V 50C Smart G1 LiPo W/IC3

$41.99 Original price was: $41.99.$29.39Current price is: $29.39.
OUR SHOP
  • My account
  • Checkout
  • Cart
  • Payment Method
CONTACT
  • About Us
  • Contact Us
  • FAQ
  • Returns & Exchanges
CUSTOMER SERVICES
  • Privacy Policy
  • Shipping & Returns
  • Delivery
  • Term and Conditions
STAY IN TOUCH

Sign up for exclusive offers, original stories, events and more.

    Copyright 2026 © www.rcmodelplay.com
    • Fly
      • Replacement Parts
      • Rockets
      • Aircraft
      • Skydog Kites
      • Bags, Boxes & Cases
      • Flight Simulators
    • Drive
      • 1/18, 1/24, 1/36 Scale
      • Batteries
      • Pine Car Derby
      • 1/10 Scale
      • Vehicle Bodies
      • Replacement Parts
      • Tires & Wheels
      • 1/5, 1/6, 1/8 Scale
      • Motors and ESC’s
      • 1/12, 1/14, 1/16 Scale
    • Drones
      • Drone Parts
      • Goggles, Headsets
      • Clothing and Mugs
      • Video Downlinks & Assy
      • SMA / RCA
      • Memory Cards
      • Antennas
      • Flight Training
    • Telescopes/Optics
      • Eyepieces
      • Camera & Eyepiece Adpt
      • Cameras & Accessories
      • Mounts and Tripods
      • Telescope Accy.
      • Binoculars
      • Filters & Lenses
      • Astro Imaging
    • Power
      • Speed Controllers
      • Chargers & Meters
      • LiPo
      • Gas & Glow Items
      • Lighting
      • Meters & Balancers
      • Soldering Supplies
      • Misc. Battery Accy
      • Trans/Rec Packs
      • Individual Cells
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.