Overview
Drivers and pilots enjoy even more Smart advantages when using Spektrum™ Smart G2 50C LiPo batteries to power their vehicles. New "Generation 2" features make these LiPo packs — featuring a 50C continuous discharge rating for high performance and longevity — 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® or IC5® 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 30C 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 50C 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 50C 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 50C 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: G2 batteries require the use of a Spektrum™ G2 Smart Charger or earlier Smart Charger with G2 update (available at spektrumrc.com).
Features
- Simpler and safer to use
- Powerful 50C continuous discharge rating to deliver high performance and longevity
- Balance charge through the IC3® or IC5® 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® and IC5® connectors are also compatible with EC3™ and EC5™ styles
- Spektrum™ G2 Smart Charger required (or earlier Smart Charger with G2 update, available at spektrumrc.com)
- Battery Type: LiPo (Lithium Polymer)
- Battery Chemistry: 3.7V per cell
- Nominal Voltage: 22.2V
- Cell Count: 6S (6 cells)
- Capacity: 4000mAh
- Continuous Discharge Rating: 50C
- Maximum Burst Discharge Rate: 50C
- Maximum Charge Rate: 5C
- Standard/Normal Charge Rate: 1C
- Standard Charge Current: 4A
- Connector Type: IC5
- Connector Compatibility: IC5 and EC5 compatible
- Length: 5.66 inches (144mm)
- Width: 1.65 inches (42mm)
- Height: 1.7 inches (43mm)
- Weight: 21.69 ounces (615g)
- Case Type: Soft Case
- Hard Case: No
- Wire Gauge: 10 AWG
- Smart Technology: G2 Technology (Second Generation)
- Auto Storage Discharge: Yes
- Auto Storage Discharge Voltage: 3.90V per cell
- Auto Storage Discharge Time: After 72 hours of inactivity
- Auto Storage Discharge Rate: Up to 1.5A
- Charge Protection Circuitry: Yes
- Integrated Microchip: Yes (stores battery parameters and health data)
- Data Logging: Yes (charge cycles, discharge cycles, temperature, internal resistance, over-charge events, over-discharge events, over-temperature events)
- Application: Air (RC aircraft)
- Spektrum Smart Charger Required: Yes
- Roar Approved: No
- Material: Internal metal side plates (thicker reinforced design)
Overview
The Spektrum SPM 4000mAh 6S 22.2V SMART G2 50C IC5 LiPo battery represents the latest generation of intelligent battery technology for RC enthusiasts across the UK. Whether you're piloting a high-performance RC aircraft or driving a competitive RC car, this premium lithium polymer battery delivers the power and reliability you need to dominate on the track or in the air. Spektrum's Smart G2 technology takes the guesswork out of battery management, making it an ideal choice for both seasoned RC competitors and those new to the hobby looking for a ready-to-use solution.
This 6-cell (6S) battery pack produces 22.2 volts nominal and features an impressive 4000mAh capacity, providing excellent flight or drive times for demanding RC applications. The standout feature is the integrated Smart technology that communicates directly with compatible Spektrum Smart chargers, eliminating the need for traditional balance leads and simplifying your charging routine. With a powerful 50C continuous discharge rating, this battery can sustain high current draws without compromising performance or longevity, making it perfect for everything from racing drones to high-speed RC trucks and competitive RC aircraft.
Smart G2 technology practically takes care of itself. The battery automatically manages its own health by discharging to a safe storage voltage of 3.90V per cell after 72 hours of inactivity, ensuring maximum lifespan and consistent performance every time you fly or drive. The integrated microchip stores vital information including charge cycles, discharge history, temperature data, and an error log to help you make informed decisions about battery maintenance and replacement. This is intelligent power management for the modern RC pilot and driver.
Key Features
- 50C Continuous Discharge Rating — This high discharge rate allows the battery to deliver sustained high current output, which is essential for high-performance RC aircraft, fast racing vehicles, and competitive RC applications. You get the power you need without voltage sag or performance loss even under demanding conditions.
- Spektrum Smart G2 One-Wire Connection — The innovative IC5 connector includes an integrated data wire that communicates battery parameters directly to your Smart charger. This means you only need to make one connection to charge and balance the battery—no separate balance lead required, making charging faster and simpler than traditional LiPo batteries.
- Automatic Smart Storage Discharge — Factory-programmed to automatically discharge to a safe 3.90V per cell storage voltage after 72 hours of inactivity, this feature extends battery life significantly and removes the need for manual maintenance. You can adjust these settings through your Smart charger if preferred.
- Data-Rich Integrated Microchip — The battery's memory stores comprehensive information including battery brand, chemistry, cell count, capacity, C-rating, charge and discharge cycles, temperature data, and internal resistance. It also maintains a health log of over-charge, over-discharge, and over-temperature events, helping you understand battery performance over time.
- Three Times Faster Storage Discharge — Compared to previous Spektrum Smart G1 batteries, the G2 generation offers dramatically faster discharge to storage voltage, getting your batteries ready for storage much more quickly without compromising cell health.
- Thicker Internal Metal Side Plates — Unlike lower-cost alternatives, this battery features reinforced internal protection with thicker metal plates that improve heat dissipation during high-drain use and provide better protection against cell punctures from rough landings or impacts common in RC racing.
- IC5 Connector Compatibility — The IC5 connector is also backward compatible with EC5-style connectors, so you can use this battery with systems that have EC5 connections, though the Smart features require a Spektrum Smart charger.
- Automatic Parameter Upload to Charger — When connected to a Spektrum Smart charger, all battery parameters and health information automatically upload to the charger's memory. This eliminates the need to manually input charge rates or other settings—the charger reads everything directly from the battery.
- User-Customisable Charge Rates — While the battery comes with preset optimal charge parameters, you can customise the charge rate through your Smart charger if your application requires different settings. The battery remembers your last used charge rate for convenience on future charging cycles.
- Maximum Burst Discharge Rate of 50C — In addition to the 50C continuous rating, this battery can handle burst discharge of up to 50C, giving you the headroom needed for acceleration, jumps, and aggressive flying manoeuvres without triggering over-discharge protection.
Technical Performance
The Spektrum SPM 4000mAh 6S SMART G2 50C is engineered to deliver consistent, reliable performance across extended periods of use. At 22.2 volts nominal (with individual cells at 3.7V), this 6S configuration provides the voltage necessary for high-speed RC applications whilst maintaining safety and compatibility with most modern 6S-compatible receivers and ESCs. The 4000mAh capacity strikes an excellent balance between runtime and weight, making it suitable for extended flying sessions in RC aircraft or longer drive times in RC cars and trucks without becoming excessively heavy. With dimensions of 144mm length, 42mm width, and 43mm height, the battery fits standard RC battery trays in most competitive and recreational vehicles. Weighing 615 grams (21.69 ounces), it provides substantial power delivery without excessive mass. The 50C continuous discharge rating means you can safely draw up to 200 amps of current (50C × 4Ah) for sustained periods, whilst burst rates can reach 200 amps momentarily. The 1C standard charge rate means you can charge this battery at 4 amps for roughly 1 hour using a standard Smart charger, with maximum charge rates up to 5C (20 amps) for faster turnaround if your charger supports it. The integrated charge protection circuitry prevents over-charging and over-discharging, safeguarding both the battery and your equipment. Built with a soft-case design wrapped in durable material, combined with reinforced internal metal side plates, this battery is built to survive the rigours of competitive RC racing and aggressive flight operations.
What's in the Box
- Spektrum SPM 4000mAh 6S 22.2V SMART G2 50C LiPo Battery with IC5 connector
What You Need to Complete
- Spektrum Smart Charger — This battery requires a Spektrum-brand Smart charger to access the full benefits of Smart G2 technology, including one-wire charging and automatic parameter management. Standard chargers cannot read the Smart data or provide single-connection charging.
- Compatible RC Vehicle or Aircraft — You'll need an RC model with a 6S-compatible receiver and ESC rated for at least 50C discharge to safely use this battery at its full performance potential.
Frequently Asked Questions
- What is Spektrum Smart G2 technology and why should I choose it? — Spektrum Smart G2 technology is an intelligent battery management system built into the battery itself. Unlike traditional LiPo batteries, Smart G2 batteries communicate directly with compatible Spektrum Smart chargers through the IC5 data connector. This eliminates the need for separate balance leads, automatically uploads your battery's unique parameters to the charger, and stores comprehensive health data including charge cycles, temperature history, and any safety events. The technology automatically discharges your battery to a safe storage voltage after 72 hours, extending overall lifespan. This makes Smart G2 batteries ideal for UK RC pilots and drivers who want maximum convenience and data-driven battery management without the complexity of traditional LiPo charging.
- Can I use this battery with my existing RC car or aircraft? — Yes, provided your vehicle has a 6S-compatible receiver and an ESC rated for at least 50C discharge. The IC5 connector is backward compatible with EC5 connectors, so it will physically connect to EC5 systems. However, to access the Smart features (one-wire charging, automatic parameter upload, storage discharge), you must use a Spektrum Smart charger. Without a Smart charger, the battery will still work but functions as a standard LiPo.
- Is this battery suitable for beginners? — Whilst the Smart G2 technology is designed to be user-friendly and self-managing, this is a premium 50C racing battery best suited to intermediate and advanced RC enthusiasts. Beginners should ensure they have a compatible Spektrum Smart charger and understand 6S LiPo safety procedures. The automatic storage discharge and data logging features actually make it safer than traditional batteries, as you can easily monitor battery health and the microchip prevents common mistakes like over-charging.
- How long will this battery last during a flight or drive session? — Runtime depends on your specific RC model and driving style. The 4000mAh capacity is a good middle ground—it provides substantial runtime without excessive weight. In RC aircraft, you might see 15-25 minutes of flight time depending on motor size and flying style. In RC cars, you could see 20-40 minutes of driving depending on speed, terrain, and throttle usage. The precise runtime is determined by your specific setup's current draw.
- What does the 50C rating mean? — The 50C rating indicates the maximum continuous current the battery can safely discharge, calculated as 50 times the battery capacity. With a 4000mAh (4Ah) capacity, the 50C rating means you can safely draw up to 200 amps continuously. This supports high-performance applications like racing, aggressive flying, and competitive RC activities. Burst rates of 50C mean you can momentarily exceed this for acceleration, jumps, and quick manoeuvres.
- Do I need to balance charge this battery? — With Spektrum Smart G2 technology, you do not need a traditional balance charger or balance lead. The Smart charger handles all balancing automatically through the IC5 data connector. This is a major convenience advantage over standard LiPo batteries, which require separate balance leads and balance chargers for safe charging.
- What makes this G2 version different from older Spektrum Smart batteries? — The G2 generation features several improvements: three times faster automatic storage discharge (meaning your battery gets ready for storage much quicker), thicker internal metal side plates for better heat dissipation and puncture protection, and more advanced data logging and error tracking. G2 batteries are compatible with updated Spektrum Smart chargers and represent the current standard in Spektrum's Smart battery lineup.
- How should I store this battery? — Store the battery in a cool, dry place at room temperature. The battery will automatically discharge to 3.90V per cell (safe storage voltage) after 72 hours of inactivity, so you don't need to manually prepare it for storage. However, if you'll be storing it for extended periods (weeks or months), periodically check that it has maintained storage voltage. Avoid storing in direct sunlight, extreme heat, or damp conditions.
- Can I charge this battery faster than the standard 1C rate? — Yes, the battery supports maximum charge rates up to 5C (20 amps for this 4Ah battery), but your Spektrum Smart charger must support this faster rate. The battery remembers your last used charge rate, so once you set a faster rate in the charger, it will automatically apply that rate on subsequent charges.
- What if something goes wrong with the battery? — The integrated microchip maintains an error log of over-charge, over-discharge, and over-temperature events. When connected to your Smart charger, you can review this log to understand any issues. The charge protection circuitry prevents damage from over-charging. If you observe swelling, unusual heat, or poor performance, stop using the battery immediately and consult Spektrum's safety guidelines.
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 4000mAh 6S 22.2V SMART G2 50C IC5 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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