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Spektrum

Spektrum 7.4v 4000mAh 15C RX LiPo Battery w/ Smart Technology

Part no. SPMX40002SRX

Expected 11 NovNo reviews yet

$105.32

or 4 fortnightly payments of $26.33 with afterpay or PayPal, or zip

Spektrum 7.4V 4000mAh Smart LiPo receiver battery — plug in, press Start, and Smart Technology handles the rest.

  • Smart Technology microchip — auto-uploads charge parameters to Spektrum Smart chargers
  • Auto smart-discharge to safe storage voltage after configurable rest period
  • 4000mAh capacity in a compact hardcase form factor
  • IC3/IC5 connectors — backwards compatible with EC3/EC5
  • Logs unhealthy events (over-charge, over-discharge, over-temperature) for battery health tracking

Will it fit?

Overview

You will 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 data 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 each time is press the Start button. Smart Technology takes care of the rest.

Smart LiPo batteries store unique data including battery brand, type, capacity, C rating, individual cell voltage, temperature, charge/discharge cycles, and over-heat, over-charge, and over-discharge incidents.

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.

Information at Your Fingertips

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

Over-Heat Incidents

Over-Charge Incidents

Over-Discharge Incidents

Features

  • Integrated microchip stores unique parameters for each battery
  • Smart discharge allows batteries to automatically discharge to a safe storage voltage
  • Save time and hassle while improving battery life
  • 15C continuous discharge rating
  • Impact-resistant ABS plastic hard-case
  • No soldering required — equipped with IC3 and IC5 connectors compatible with EC3 and EC5

In the box

  • 1x 7.4V 4000mAh 15C LiPo Battery with Smart Technology
  • 1x Instruction Manual

Specifications

TypeSmart LiPo
Capacity4000mAh
Voltage7.4V
Connector TypeIC3
Number of Cells2
Weight170g
ConfigurationHardcase
Length86mm (3.4")
Width34mm (1.3")
Height30mm (1.2")
ApplicationReceiver Pack
Maximum Continuous Discharge15C
Smart TechnologySmart Battery

Battery

Cell VoltageVoltage produced by each individual cell in the battery3.7V
Total Voltage7.4V
CapacityHow much energy is stored; higher mAh gives longer run times4000mAh
Discharge C RatingHow fast the battery safely delivers power to your motor15C
ChemistryBattery type that affects power, performance, and feelLiPo
ConnectorPlug style that determines what the battery connects toIC3
Length86mm
Width34mm
Height30mm
WeightInfluences handling, balance, and runtime170g
Main Connector Wire GaugeAmerican Wire Gauge - Wire thickness that affects how much current it carries13AWG
Case TypeChoose 'Hard Case' for protection or 'Soft Case' for weight savingSoft Case
Balance Lead ConnectorPlug used by chargers to balance the battery’s cellsJST-XH

Compatibility

Reviews

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Questions & Answers (1)

Have a question, or an answer? Our team and other owners both reply.

  • Lloyd M Verified buyer13 Aug 2026

    Question: is this compatible with axial capra