Spektrum 7.4V 2S Smart G2 LiPo Receiver Battery Overview
Drivers and pilots enjoy even more Smart advantages when using Spektrum™ Smart G2 LiPo batteries. "Generation 2" features make these powerful LiPo packs even simpler and safer to use together with your Smart charger.
For example, Spektrum Smart G2 technology makes it much easier to balance charge your LiPo batteries. Balancing information travels through the unique data wire of each Smart G2 battery's innovative IC3® connector. As a result, only a single connection is needed - no separate balance lead is required.
Smart G2 batteries come from the factory programmed to discharge automatically to a safe storage voltage of 3.90V after 72 hours of inactivity. The benefits include longer battery life, better performance over the life of the pack, and the peace of mind that comes from knowing your Smart battery is maintenance-free. You can change the battery's Auto Storage settings based on your own preferences. G2 batteries also offer a storage discharge rate that's three times faster than the previous G1 Smart batteries.
Smart G2 soft-case LiPo packs also include thicker internal metal side plates. These plates improve heat dissipation and provide more protection for the cells against punctures during rough landings or in similar impact-prone situations.
As with other Smart batteries, you'll never have to set your own charging preferences for a Spektrum Smart G2 battery until you want to. When a Smart G2 LiPo battery is connected to a Spektrum™ Smart charger, its unique charging parameters and health information upload to the charger from the battery's integrated memory microchip. Through the charger you can view and set preferences such as charge rates, so all that's required to charge the pack is connecting it to your Smart charger. Smart technology takes care of the rest.
Spektrum Smart G2 LiPo batteries store a wide variety of essential information, including:
- Battery Brand
- Battery Type
- Battery Capacity
- Battery C Rating
- Individual Cell Voltage
- Battery Temperature
- Charge/Discharge Cycles
Spektrum Smart G2 LiPo batteries also maintain an error log including the number of over-heat, over-discharge and over-charge incidents. This data can be helpful in assuring that the battery you've chosen is right for the application. Innovative Spektrum Smart G2 LiPo batteries are so easy to use, they nearly take care of themselves. It's easy to achieve peak battery performance, reliability and longevity with Smart G2 technology!
Note: Smart G2 batteries require the use of a Spektrum Smart Charger. Update your Spektrum Smart Charger for all the latest advancements in Smart Technology.
Spektrum 7.4V 2S Smart G2 LiPo Receiver Battery Features
- Simpler and safer to use
- Balance charge through the IC3® connector data wire - with only one connection, no balance lead required
- Faster Auto Discharge at up to 1.5A to safe storage voltage for long battery life and improved performance
- Thicker internal metal side plates protect cells and improve heat dissipation
- Integrated microchip stores unique parameters for each battery
- IC3® connectors are also compatible with EC3™ style
- Spektrum Smart charger required
Spektrum Smart G2 Family
Overview
The Spektrum 7.4V 650mAh 2S 15C Smart G2 Receiver LiPo Battery with IC3 connector is a precision-engineered power solution designed specifically for RC receivers, flight controllers and other low-power applications. This intelligent battery represents the latest generation of Spektrum Smart technology, bringing enhanced safety, convenience and performance to your RC hobby. Whether you're flying RC helicopters, fixed-wing aircraft, or powering receiver systems in RC cars and trucks across the UK, this Smart G2 battery delivers reliable, consistent power with innovative features that make battery management simpler and safer than ever before.
For RC enthusiasts and pilots who demand the best in receiver power solutions, the Spektrum Smart G2 technology has been refined to offer even greater advantages over standard LiPo batteries. The unique integration of a microchip memory system within the battery itself means your Spektrum Smart charger communicates directly with the battery, uploading all charging parameters automatically. This eliminates the need for manual configuration and takes the guesswork out of charging—simply connect the battery to your Smart charger and let the intelligent system handle the rest. It's the perfect choice for serious hobbyists, whether you're a seasoned competitor or someone just discovering the world of RC flying and driving in the UK.
What truly sets this receiver battery apart is its innovative approach to simplifying LiPo battery management. The Smart G2 generation brings significant improvements over earlier Smart batteries, making these packs even easier and safer to use with your existing Spektrum Smart charger. The 650mAh capacity provides adequate runtime for most receiver applications, whilst the 15C discharge rate ensures stable power delivery even during demanding flying or driving scenarios. This is a battery that takes the complexity out of ownership, allowing you to focus on enjoying your RC hobby rather than worrying about battery maintenance.
Key Features
- Smart G2 Technology — Second-generation Smart technology makes these batteries even simpler and safer to use with your Smart charger, featuring improved integration and faster processing for better overall battery management and reliability throughout its operational lifespan.
- Automatic Storage Discharge — Factory-programmed to discharge automatically to a safe storage voltage of 3.90V after just 72 hours of inactivity, this feature significantly extends battery life, maintains peak performance over the lifetime of the pack, and provides complete peace of mind knowing your Smart battery is entirely maintenance-free without any user intervention required.
- Three Times Faster Storage Discharge — The G2 storage discharge rate is three times faster than the previous G1 Smart batteries, meaning your battery reaches safe storage voltage more quickly and efficiently whilst still maintaining optimal cell health and longevity.
- No Separate Balance Lead Required — Balancing information travels through the unique data wire of the innovative IC3 connector, eliminating the need for a separate balance lead and requiring only a single connection to your Smart charger for complete balance charging functionality.
- Integrated Memory Microchip — Every Smart G2 battery contains an integrated microchip that stores essential information including battery brand, type, capacity, voltage, chemistry and charge cycle count, all of which upload automatically to your charger when connected.
- Customisable Auto Storage Settings — You can adjust the battery's Auto Storage settings based on your own personal preferences and specific usage patterns, giving you complete control over how your battery behaves during periods of inactivity.
- Thicker Internal Metal Side Plates — The soft-case LiPo pack includes thicker internal metal side plates that improve heat dissipation during charging and discharge, whilst simultaneously providing superior protection for the cells against punctures during rough landings or other impact-prone situations.
- IC3 Connector — The IC3 connector is Spektrum's innovative connector system specifically designed for receiver batteries and compatible with all modern Spektrum Smart chargers and receiver systems, ensuring seamless integration with your existing equipment.
- 2S LiPo Chemistry — With two cells configured as a 2S pack, this battery delivers 7.4V nominal voltage, providing the optimal power level for receiver applications whilst maintaining excellent efficiency and voltage stability throughout the discharge cycle.
- 15C Discharge Rate — The 15C continuous discharge capability ensures that this battery can safely deliver up to 9.75 amps of continuous current, providing stable power for demanding receiver applications and flight controller systems without voltage sag or performance degradation.
- Soft Case Construction — The battery is housed in a protective soft case that balances weight savings with adequate protection, making it ideal for integrated into receiver bays and tight compartments within your RC aircraft or vehicle whilst remaining durable enough for regular field use.
Technical Performance
The Spektrum 7.4V 650mAh 2S 15C Smart G2 Receiver Battery represents a significant engineering achievement in receiver power solutions for RC hobbyists across the United Kingdom. Built around proven LiPo chemistry using two cells in series to deliver 7.4V nominal voltage per charge cycle, this battery combines raw capacity with intelligent safety management that sets it apart from conventional alternatives. The 650mAh capacity provides sufficient runtime for most receiver and flight controller applications, particularly in lighter aircraft and smaller-scale RC vehicles. The 15C discharge rating ensures that the battery can safely deliver continuous current without voltage collapse, maintaining stable receiver operation even during demanding aerobatic manoeuvres or aggressive driving sequences. The thicker internal metal side plates integrated into the soft case construction dramatically improve heat dissipation during both charging and discharge cycles, a critical feature that extends battery lifespan and prevents thermal degradation of the cells. The IC3 connector provides secure, reliable electrical contact with virtually zero resistance loss, ensuring maximum efficiency in power transfer to your receiver systems. The integrated microchip continuously monitors cell voltage, charge cycle count and overall battery health, communicating this vital information to your Spektrum Smart charger in real time. The automatic storage discharge function—which activates after just 72 hours of non-use and reaches safe storage voltage three times faster than previous generation Smart batteries—represents a genuine breakthrough in battery maintenance automation, eliminating one of the most tedious and potentially dangerous aspects of LiPo ownership. For serious RC enthusiasts in the UK who demand reliability, intelligence and complete safety from their receiver batteries, this Smart G2 pack delivers exceptional value through engineering excellence and user-focused design.
What's in the Box
- Spektrum 7.4V 650mAh 2S 15C Smart G2 Receiver LiPo Battery with IC3 connector
- Battery safety documentation and product information
Frequently Asked Questions
- Is the Spektrum Smart G2 battery suitable for beginners and experienced RC pilots? — Yes, absolutely. The Smart G2 battery is specifically designed to be beginner-friendly because it removes the complexity from battery management. The integrated microchip automatically communicates with your Spektrum Smart charger, uploading all charging parameters without requiring manual configuration. Even experienced pilots appreciate the intelligent automation and enhanced safety features. The automatic storage discharge function means you don't need to worry about maintaining safe storage voltage between flights—the battery handles this automatically. Whether you're just discovering RC helicopters and aircraft for the first time or you've been competing at the highest levels for years, this battery simplifies your hobby rather than complicating it.
- What makes Smart G2 technology different from regular LiPo batteries? — Smart G2 batteries contain an integrated microchip that stores detailed battery information including capacity, voltage, chemistry and charge cycle count. This data uploads automatically to your Spektrum Smart charger when you connect the battery, eliminating manual setup entirely. Additionally, G2 batteries feature automatic storage discharge that activates after 72 hours of inactivity, maintaining your battery at a safe 3.90V storage voltage without any user action. The storage discharge rate is three times faster than older G1 Smart batteries. The thicker internal metal side plates in G2 batteries improve heat dissipation significantly, extending battery lifespan considerably. Finally, you need only one connection to balance charge—there's no separate balance lead required because balancing information travels through the IC3 data wire.
- What is the runtime and flight time I can expect from the 650mAh capacity? — Runtime varies depending on your specific receiver configuration, the weight of your aircraft, the intensity of your flying style and the power draw of your receiver and flight controller systems. Generally, a 650mAh receiver battery provides 30-45 minutes of continuous flight time in most RC helicopter and aircraft applications, though this can be shorter during aggressive aerobatic flying with high servo demand or extended during gentle, relaxed flying. The 15C discharge rating ensures the battery can handle peak current demands without voltage sag, maintaining stable receiver operation throughout your flight. For longer flights, consider carrying multiple batteries—this also distributes the charge cycle load across multiple packs, extending the overall lifespan of your battery collection.
- Can I use this battery with non-Spektrum chargers? — Whilst this battery is specifically optimised for use with Spektrum Smart chargers, it can technically be charged with any standard LiPo charger that supports 2S batteries and the IC3 connector. However, you will lose all the intelligent Smart features and automated functions. The charger won't receive battery information from the microchip, and you'll need to manually configure charging parameters. Additionally, the automatic storage discharge feature won't function without a Smart charger. For the full benefits of Smart G2 technology, using an authentic Spektrum Smart charger is essential.
- How does the automatic storage discharge protect my battery? — LiPo batteries stored at full charge for extended periods suffer from reduced lifespan and increased risk of cell failure or puffing (internal gas expansion). The Smart G2 automatically discharges your battery to 3.90V per cell (7.8V total for 2S) after just 72 hours of non-use—this is the scientifically optimal voltage for long-term LiPo storage. By automating this process, you never need to remember to discharge your batteries, and they remain in perfect storage condition between flights or driving sessions. The three times faster discharge rate compared to G1 batteries means your battery reaches safe storage voltage quickly without requiring constant monitoring.
- What is the maximum charge rate for this battery? — The Spektrum 7.4V 650mAh 2S Smart G2 battery supports a maximum charge rate of 1.5C, which equals 975 mA (approximately 1 amp). This charge rate is automatically programmed into the battery's microchip and uploads to your Spektrum Smart charger when you connect the battery, so no manual configuration is necessary. Charging at 1.5C provides a good balance between reasonable charging speed and maximum battery longevity.
- Is this battery waterproof, and can it handle moisture exposure? — Whilst the battery's soft case provides some degree of moisture resistance, LiPo batteries are not fully waterproof and should be protected from direct water immersion. If your battery gets wet, dry it thoroughly with a soft cloth and allow it to air dry completely before charging or using it. Avoid exposing the battery to saltwater, which can corrode internal components and the connector. Store the battery in a cool, dry location away from humidity. For true waterproof receiver systems, consult the documentation for your specific receiver and flight controller to understand their water-resistance capabilities.
- How long will this battery last before it needs replacement? — A properly maintained Spektrum Smart G2 battery typically provides 300-500 charge cycles before requiring replacement, depending on usage patterns and charging practices. The battery's integrated microchip tracks charge cycles, and your Smart charger displays this information so you can monitor battery health over time. Factors that extend battery lifespan include: avoiding full discharge during storage, charging promptly after each flight or driving session, using the correct charge rate (1.5C maximum), and maintaining safe storage voltage between uses. The automatic storage discharge feature built into G2 batteries significantly extends overall lifespan by keeping cells at optimal voltage when not in active use.
- What does the IC3 connector mean, and is it compatible with my receiver? — The IC3 (sometimes called IC3 Connector) is Spektrum's intelligent connector system specifically designed for receiver batteries and smart batteries. It features a unique data wire that allows the battery's microchip to communicate with your Spektrum Smart charger, uploading battery information and enabling automatic charging optimisation. The IC3 connector is standard on all Spektrum receiver systems, flight controllers and compatible equipment manufactured in recent years. If your receiver uses an IC3 connector, this battery is plug-and-play compatible. If you're unsure about your receiver's connector type, consult your receiver's documentation or contact RC Model Shop for guidance on compatibility.
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 7.4V 650mAh 2S 15C Smart G2 Receiver LiPo Battery: IC3 O-SPMX-1052 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.
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