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Spektrum

Spektrum 11.1V 4000mAh 30C 3S Soft Case LiPo Battery

Part no. SPMX40003S30

2 in stock5.0
1 review
1 / 4
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$170.44

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Spektrum 11.1V 3S 4000mAh 30C Smart LiPo battery with IC3 connector — auto-uploads charge parameters for one-press charging on compatible Smart chargers.

  • 11.1V 3S 4000mAh 30C Smart LiPo for aircraft applications
  • Smart microchip auto-uploads charge parameters — just press Start
  • Stores charge/discharge cycles, temperature, and internal resistance data
  • Error log tracks over-heat, over-discharge, and over-charge incidents
  • IC3 connector with charge protection and short circuit protection

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  • 2 in stock · Ships Friday · order by Friday

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Frequently bought together

Overview

Spektrum Smart LiPo batteries eliminate manual charge setup. When connected to a Spektrum Smart charger, the battery's integrated microchip automatically uploads its unique parameters — chemistry, capacity, C rating, cell count, charge cycles, temperature history, and internal resistance — so charging is as simple as pressing Start. Preset charge, discharge, and storage parameters are relayed automatically, and the charger remembers the last charge rate you set.

Smart LiPo batteries also maintain an error log of over-heat, over-discharge, and over-charge incidents, giving you the data to make informed decisions about each pack. The charge rate is user-customisable, allowing you to take full advantage of packs with faster charge ratings.

Note

This product is classified as dangerous goods. Due to aviation safety laws, it can not be sent by air, including to New Zealand. If you add this to your cart, you will only see road delivery options, or to pick up from our store. LiPo Charging: Always use a LiPo compatible charger when charging your Lithium Polymer (LiPo) batteries. Be sure to select the correct chemistry/setting for the LiPo battery you are charging, as charging on the wrong setting can cause violent fires if left unattended. Please use extreme caution and never charge LiPo batteries unattended. We also recommend using a LiPo Safe/Protection Bag while charging your LiPo batteries.

You'll never have to set charge preferences for a Spektrum Smart battery until you want to. When a Spektrum Smart LiPo battery is connected to a Spektrum Smart charger, unique parameters and health of that Smart LiPo battery upload from the Smart memory microchip integrated into the battery. Through the charger, you can view and set preferences, such as charge rates, so that all you have to do to charge the pack every time is press the charger "Start" button. Smart technology takes care of the rest.

Our new Spektrum Smart 50C LiPos come in a variety of popular sizes and are ready to drop into your RC aircraft for better performance, power, and reliability. These are the perfect packs for high performance models and power systems and a great upgrade to get more punch and power on nearly any setup.

Spektrum Smart LiPo Batteries Store Unique Data, Such As:

Battery Brand

Battery Type

Battery Capacity

Battery C Rating

Individual Cell Voltage

Battery Temperature

Charge/Discharge Cycles

Spektrum Smart LiPo batteries also maintain an error log including the number of over-heat, over-discharge and over-charge incidents which can be helpful data in assuring that the battery you've chosen is right for the application. A Smart Battery uploads its charge parameters to a Spektrum Smart Charger automatically making charging as simple as pressing the "Start" button. The charge rate of every Smart Battery is customizable, allowing you to take full advantage of packs with faster charge ratings.

When connected to a Spektrum Smart charger, unique parameters and health of your Smart LiPo battery upload from the Smart memory microchip integrated into the battery. Through the charger, you can set and record preferred settings, such as charge rates and self-discharge options, so that all you have to do to charge the pack is press the "start" button. Smart technology will take care of the rest. Every Smart LiPo battery is factory assembled with the next-generation IC3™ and IC5™ output connector that utilizes a data transfer wire to relay saved information to your Smart Chargers.

An integrated microchip allows each Smart Battery to save vital information such as battery brand, chemistry, cell count, capacity, number of charging cycles, number of discharges, C rating, battery temperature, and internal resistance. Additionally, each battery will save a log of unhealthy events such as over-charge, over-discharge, and over-temperature. This allows you to make the most informed decision about each battery when you are getting your gear ready for a day at the field or the track.

Preset charge, discharge, and storage parameters are automatically relayed to a Spektrum Smart Charger making charging as simple as pressing the “start” button. Charge rate of individual batteries can be user customized allowing you to take full advantage of packs with faster charge ratings. The integrated microchip on each battery will remember the last charging rate you set, so the next time you plug it in, these settings will automatically populate so all you have to do is press “Start.”

Features

  • Integrated Smart memory microchip stores battery brand, chemistry, cell count, capacity, C rating, charge/discharge cycles, temperature, and internal resistance
  • Automatically uploads charge parameters to a Spektrum Smart charger — press Start to charge
  • Error log records over-heat, over-discharge, and over-charge incidents
  • User-customisable charge rate; charger remembers last charge rate set
  • Charge protection circuitry included
  • Short circuit protection
  • Auto storage function
  • Soft case construction
  • 12 AWG wire gauge
  • JST_XH balance connector
  • IC3 connector with data transfer wire

Highlights

High-Performance 3S Smart Pack

High-Performance 3S Smart Pack

These are the perfect packs for high performance models and power systems and a great upgrade to get more punch and power on nearly any setup.

Smart Battery Integrated Microchip

Smart Battery Integrated Microchip

An integrated microchip allows each Smart Battery to save vital information such as battery brand, chemistry, cell count, capacity, number of charging cycles, and internal resistance.

Spektrum 3S 4000mAh Smart LiPo battery — connector end

Spektrum 3S 4000mAh Smart LiPo battery — connector end

Every Smart LiPo battery is factory assembled with the next-generation IC3 output connector that utilizes a data transfer wire to relay saved information to your Smart Chargers.

Specifications

Capacity4000mAh
Voltage11.1V
Battery Voltage11.1V
Number of Cells3
Battery TypeLiPo (3.7V per cell)
Maximum Burst Discharge Rate30C
Maximum Charge Rate5C
Normal/Standard Charge Rate1C
Normal/Standard Charge Current4A
Maximum Charge Current20A
Connector TypeIC3
Battery Balance ConnectorJST_XH
Wire Gauge12 AWG
Watt Hours44.4Wh
MaterialSoft Case
Hard CaseNo
Charge Protection CircuitryYes
Short Circuit ProtectionYes
TechnologySmart
ApplicationAircraft
Product Length5.5" (140mm)
Product Width1.69" (43mm)
Product Height0.94" (24mm)
Product Weight8.1oz (230g)
Discharge Lead Length2.36" (60mm)
Balance Lead Length1.37" (35mm)

Battery

Cell VoltageVoltage produced by each individual cell in the battery3.7V
Total Voltage11.1V
CapacityHow much energy is stored; higher mAh gives longer run times4000mAh
Discharge C RatingHow fast the battery safely delivers power to your motor30C
ChemistryBattery type that affects power, performance, and feelLiPo
ConnectorPlug style that determines what the battery connects toIC3
Length140mm
Width43mm
Height24mm
WeightInfluences handling, balance, and runtime230g
ConfigurationShape of the battery that determines how it fitsFlat
Main Connector Wire GaugeAmerican Wire Gauge - Wire thickness that affects how much current it carries12AWG
Case TypeChoose 'Hard Case' for protection or 'Soft Case' for weight savingSoft Case
R.O.A.R ApprovedCertified for use in official R.O.A.R. sanctioned racing eventsNo

Compatibility

Reviews (1)

5.0

Based on 1 review

  • 5 stars1
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  • 1 star0
  • Bryce W

    Verified buyer

    23 Sept 2026

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