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SPM 3300mAh 7-Cell 8.4V Smart NiMH Battery IC3 O-SPMX33007C3

Model No: O-SPMX33007C3


COMING SOON 22/05/2026

Coming Soon - Stock Arriving: 22/05/2026

Stock Arriving: 22/05/2026

£42.50

£4.01

£38.49

Inc VAT

1 Year Warranty
We Accept

Features

  • Spektrum Smart Technology Makes Charging and Maintaining Batteries Easy
  • Automatic charging when paired with a Spektrum Smart Charger - insures safe and accurate charge parameters
  • Internal Battery Temperature Monitor helps guarantee safe Charging and Discharging
  • Integrated Microchip Stores Unique Parameters for Each Battery
  • New IC3 and IC5 Connectors are Compatible with EC3 and EC5
  • Save Time and Hassle, while Improving Battery Life

Overview

You'll never have to set charge preferences for a Spektrum Smart battery until you want to. When a Spektrum Smart NiMH battery is connected to a Spektrum Smart charger, unique parameters and health of that Smart NiMH 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.

Every Smart NiMH battery is factory assembled with the next-generation IC3T or IC5T output connector that's conveniently compatible with older devices equipped with robust EC3T and EC5T connectors. You can use Smart Batteries with older systems, but only when connected to a Spektrum Smart device will all the benefits of Smart technology become obvious.

Spektrum Smart NiMH Batteries Store Unique Data, such as:

  • Battery Type
  • Battery Capacity
  • Battery C Rating
  • Battery Temperature
  • Charge/Discharge Cycles

Spektrum Smart NiMH 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.

Video Overview


Smart Battery Technology
Smart Battery Technology

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 IC3T and IC5T output connector that utilizes a data transfer wire to relay saved information to your Smart Chargers.

Data Rich
Data Rich

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

Simple and Quick
Simple and Quick

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."

New IC3 & IC5 Connectors
New IC3 & IC5 Connectors

The innovative Smart connection is made possible by an installed microchip on every battery, feeding the unique information through a data cable to the new IC3 and IC5 connectors. The IC series of connectors are designed from the ground up to provide a more solid connection, higher heat resistance, and effortless installation. For those using the popular EC3 and EC5 connectors, there's no need to worry. The IC connector series is entirely backwards compatible with existing connectors so you can use Smart Batteries with older systems, but only when connected to a Spektrum Smart device are all the benefits of Smart technology obvious.

Overview

The SPM 3300mAh 7-Cell 8.4V Smart NiMH Battery with IC3 connector represents Spektrum's latest advancement in intelligent battery technology for RC car UK enthusiasts. Whether you're running a ready to run RC vehicle or maintaining an existing fleet of models, this Smart NiMH battery delivers reliable power combined with automatic charging convenience that takes the guesswork out of battery management. The integrated microchip stores unique parameters for each battery, meaning your Spektrum Smart Charger will recognise and charge this pack correctly every single time without any manual programming required.

Smart NiMH batteries have revolutionised RC charging and battery maintenance for hobbyists across the UK and beyond. Unlike traditional NiMH packs, the SPM 3300mAh battery communicates directly with compatible Spektrum Smart Chargers, uploading essential data that ensures safe and accurate charging at the rate best suited to your specific battery's health and condition. This technology saves time and hassle whilst dramatically improving overall battery lifespan, meaning your investment in quality RC equipment pays dividends over months and years of use.

The IC3 connector fitted to this battery is the next-generation standard that maintains compatibility with older EC3 devices, giving you flexibility across your RC car collection. The 3300mAh capacity and 8.4V rating make this an ideal choice for mid-range RC applications, providing balanced performance across a wide spectrum of surface-based RC models. Built with Spektrum's proven engineering standards, this Smart NiMH battery is manufactured to the highest specifications and represents excellent value for serious RC hobbyists looking for reliable, intelligent power solutions.

Key Features

  • Spektrum Smart Technology — The integrated microchip within this battery stores unique parameters including battery type, capacity, C-rating and temperature data, which automatically uploads to your Spektrum Smart Charger when connected, eliminating the need for manual charge programming and ensuring perfectly calibrated charging every time.
  • Automatic Charging Recognition — When connected to a compatible Spektrum Smart Charger, this battery's parameters are instantly recognised and correct charging begins automatically, making the charging process as simple as pressing the 'Start' button on your charger without any additional setup or configuration required.
  • Internal Temperature Monitoring — The integrated temperature monitor actively tracks the battery's internal heat throughout charging and discharging cycles, helping to guarantee safe operation and protecting both the battery and your RC equipment from thermal damage or dangerous conditions.
  • Error Logging and Health Tracking — This Smart battery maintains a comprehensive error log that records the number of over-heat, over-discharge and over-charge incidents, providing invaluable diagnostic data to help you understand whether the battery is performing optimally for your specific RC application.
  • Customisable Charge Rate — Unlike fixed-rate batteries, the SPM 3300mAh Smart NiMH allows you to customise the charge rate through your Spektrum Smart Charger, letting you take full advantage of this pack's capability to accept faster charging when you need to get back on the track quickly.
  • IC3 and EC3 Connector Compatibility — The next-generation IC3T output connector is fully compatible with older robust EC3T connectors, providing flexibility to use this battery across multiple RC systems and ensuring you can upgrade without replacing your entire fleet of connectors and charge leads.
  • Cycle Tracking — The battery's microchip records the total number of charge and discharge cycles, helping you monitor battery age and usage patterns, which is particularly valuable for competition-minded RC enthusiasts who need to track maintenance intervals and battery replacement schedules.
  • Time and Hassle Reduction — By automating charge parameters and eliminating manual programming, this Smart battery saves time on every charging session whilst improving overall battery longevity, meaning less time spent on battery management and more time enjoying your RC car UK hobby.

Technical Performance

The SPM 3300mAh 7-Cell 8.4V Smart NiMH Battery represents the pinnacle of modern NiMH battery engineering, combining proven chemistry with intelligent microprocessor technology to deliver reliable, safe power for a broad range of RC surface vehicles. With a nominal voltage of 8.4V across seven 1.2V cells, this battery delivers the steady voltage curve that NiMH chemistry is renowned for, ensuring consistent performance throughout discharge cycles without the sudden voltage sag that can affect heavier racing applications. The 3300mAh capacity provides substantial runtime for mid-sized RC buggies, trucks and cars, making this an excellent choice for weekend bashers and hobbyists who want extended run times without excessive weight. The integrated Smart technology microchip manages all charging parameters automatically, communicating with Spektrum Smart Chargers (such as the S155, S1200, or S2100 series) to optimise charge rates and ensure the battery receives the exact current and voltage profile it requires. The IC3T connector represents Spektrum's commitment to modern RC standards whilst maintaining backward compatibility with EC3T equipped systems, a thoughtful engineering decision that reduces the need for expensive adapter cables and connector conversions. The internal temperature monitoring ensures that both charging and discharging operations remain within safe thermal boundaries, protecting the battery's internal chemistry and extending its operational lifespan. For RC enthusiasts across the UK seeking a Smart NiMH battery that delivers reliability, ease of use and intelligent charging convenience, the SPM 3300mAh represents an investment in hassle-free RC power that will serve faithfully across multiple charging cycles and seasons of use.

What's in the Box

  • SPM 3300mAh 7-Cell 8.4V Smart NiMH Battery with integrated microchip
  • IC3T connector pre-installed
  • Integrated Smart battery memory microchip

What You Need to Complete

  • Spektrum Smart Charger (S155, S1200, S2100, S100 or compatible model) — required to utilise the full Smart charging benefits of this battery
  • RC vehicle compatible with 8.4V NiMH batteries and IC3 or EC3 connectors

Frequently Asked Questions

  • Can I use this Smart NiMH battery with a standard RC charger? — Whilst this battery features an IC3 connector that is mechanically compatible with older EC3 equipped systems, you will only access the full benefits of Smart technology when using a genuine Spektrum Smart Charger such as the S155, S1200 or S2100 models. Standard chargers will charge the battery but won't recognise its unique Smart parameters, meaning you'll need to manually set charge rates and monitor charging progress.
  • Is this suitable for beginners? — Yes, this battery is actually ideal for beginners because the Spektrum Smart Charger integration removes all the confusion and technical knowledge required with traditional batteries. Simply connect the battery to your compatible Smart Charger and press 'Start' — there's no programming, no rate selection, and no risk of incorrect charging because the battery tells the charger exactly what it needs. This makes the SPM 3300mAh perfect for newcomers to the RC hobby who want simple, reliable power without the learning curve.
  • What voltage is this battery and what does that mean for performance? — This is an 8.4V battery across seven 1.2V NiMH cells, which is the standard for 7-cell NiMH packs in RC applications. The nominal 8.4V provides steady, consistent power throughout the discharge cycle, making it suitable for touring cars, buggies and general-purpose RC vehicles. NiMH chemistry maintains voltage stability better than some alternatives, ensuring your RC car performs predictably from full charge until the battery reaches the discharge threshold monitored by the Smart microchip.
  • How long will this battery last between charges? — Runtime depends on your specific RC vehicle's current draw and driving style. The 3300mAh capacity provides substantial endurance for typical RC buggies and trucks, with runtime typically ranging from 20-45 minutes depending on whether you're running a lightweight buggy with efficient electronics or a heavier touring car. The Smart battery's temperature monitoring also ensures the battery doesn't degrade prematurely through over-discharging, which helps maintain consistent runtimes over the battery's working lifespan.
  • What makes Spektrum Smart batteries different from regular NiMH batteries? — The critical difference is the integrated microchip and automatic charging capability. Regular NiMH batteries require you to manually select charge rates and monitor charging — introducing the risk of incorrect parameters that can shorten battery life. Spektrum Smart batteries upload their unique parameters (including type, capacity, C-rating and health status) to compatible Smart Chargers automatically, meaning charging is perfectly calibrated every time without any guesswork or manual intervention. Additionally, the error log tracking over-heat, over-discharge and over-charge events gives you diagnostic data to ensure optimal battery health.
  • Is the IC3 connector compatible with my older RC equipment? — The IC3T connector is specifically designed to be compatible with older EC3T connectors, so if your RC car currently uses an EC3 connector, you can use this battery without needing an adapter cable (though adapters are available if required for other connector types). This backward compatibility is a key advantage of Spektrum's modern battery designs, allowing you to upgrade your power source without having to replace all your connectors and leads simultaneously.
  • How do I know when this battery needs replacing? — The Smart microchip tracks all charge cycles and maintains an error log of thermal and voltage incidents. When you connect the battery to your Spektrum Smart Charger, you can view this data to assess the battery's health. Most NiMH batteries like this one deliver reliable service for hundreds of cycles, but if you notice the error log shows frequent over-discharge events or the runtime noticeably decreases compared to when the battery was new, it's likely time to consider replacement.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the SPM 3300mAh 7-Cell 8.4V Smart NiMH Battery IC3 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.

We want to make sure your delivery goes smoothly, so here are some important details about our service:

  • For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
  • Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
  • Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
  • If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
  • We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
  • As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
  • If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
  • For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.