Overview
The Spektrum 7.4V 5000mAh 2S 30C Smart LiPo G2 Hard Case battery (SPMX52S30H3) represents a significant upgrade for any RC car enthusiast looking for reliable, intelligent power management. Whether you're a seasoned RC hobbyist in the UK or someone just beginning to explore the world of remote control vehicles, this Smart G2 battery delivers the performance, safety and convenience that modern RC driving demands. Spektrum has engineered this pack with Generation 2 Smart technology, which means charging, monitoring and maintaining your battery becomes virtually automatic — eliminating guesswork and ensuring your RC car performs at its peak every single time you take it out.
Built for drivers and pilots who demand more from their equipment, the Smart G2 30C LiPo offers a revolutionary approach to battery management that sets it apart from conventional LiPo batteries. The integrated microchip inside this hard case pack communicates directly with any Spektrum Smart charger, uploading all of your battery's vital data — including charge cycles, health status, temperature readings and more — the moment you connect it. This means you never have to manually configure charging parameters again. Simply plug in the battery and let the Smart charger take care of the rest. For RC car UK enthusiasts who value both performance and peace of mind, this is exactly what modern LiPo battery technology should deliver.
The hard case construction combined with Spektrum's proprietary Smart technology makes this one of the most user-friendly and durable 2S LiPo batteries available for RC models. With its innovative IC3 connector that requires only a single connection (no separate balance lead needed) and its automatic storage discharge feature that activates after just 72 hours of inactivity, this battery practically manages itself. You get longer battery life, consistent performance across multiple charge cycles, and the confidence that comes from knowing your pack is being properly maintained whether you're racing competitively or enjoying casual weekend bashings.
Key Features
- Smart G2 Technology with Single IC3 Connection — The innovative Spektrum Smart G2 system eliminates the need for a separate balance lead entirely. All balancing information travels through the data wire of the IC3 connector, meaning you only need one connection to your Spektrum Smart charger. This dramatically simplifies the charging process and reduces the risk of connection errors, making it ideal for both experienced RC enthusiasts and those new to the hobby.
- Automatic Smart Storage Discharge — Factory-programmed to automatically discharge to a safe storage voltage of 3.90V after 72 hours of inactivity, this battery takes maintenance out of your hands. The result is longer overall battery life, better performance retention over the lifetime of the pack, and peace of mind knowing your investment is being properly cared for even when not in use. You can customise these Auto Storage settings based on your own preferences through your Smart charger.
- Three Times Faster Storage Discharge Than Previous G1 Models — The Smart G2 generation offers a significantly accelerated discharge rate compared to the original Smart batteries, getting your pack to safe storage voltage much quicker. This faster operation means less waiting time and more convenience for RC drivers who want their batteries ready for the next session immediately.
- Hard Case Protection with Reinforced Metal Side Plates — Unlike soft-case alternatives, this battery features a durable hard case enclosure combined with thicker internal metal side plates. These metal reinforcements improve heat dissipation during demanding runs and provide robust protection against punctures and impacts from rough landings or crash scenarios. This construction ensures your battery survives the rigours of competitive racing or aggressive bashing.
- Integrated Memory Microchip with Comprehensive Data Logging — Every Smart G2 battery contains an intelligent microchip that records and stores essential information about battery brand, type, capacity, C rating, individual cell voltages, charge cycles, discharge cycles, temperature readings and internal resistance. The battery also maintains an error log tracking over-heat, over-discharge and over-charge incidents, allowing you to make fully informed decisions about whether a battery is still suitable for your application.
- Automatic Charging Parameter Upload — When connected to a Spektrum Smart charger, your battery's unique charging preferences and health information upload automatically from its memory microchip. You never have to manually input settings — the charger simply reads what's optimal for that specific pack and applies those parameters instantly. If you customise charge rates, the battery remembers your preferences for next time.
- 30C Continuous Discharge Rating — This battery delivers a robust 30C continuous discharge rate, meaning it can sustain demanding power draws without overheating or losing performance. For RC car applications requiring responsive acceleration and sustained power delivery, this rating ensures the battery won't become a limiting factor in your vehicle's performance.
- 5C Maximum Charge Rate Capability — The battery supports charging at up to 5C (5 amps in this case), allowing for reasonably quick top-ups between runs without compromising battery health. This fast-charging capability is balanced with built-in protection circuitry to prevent damage from overcharging.
- IC3 and EC3 Connector Compatibility — The IC3 connector is backward compatible with EC3-style connectors, meaning you can use this Smart G2 battery with older systems if needed. This compatibility provides flexibility and helps protect your investment should you need to adapt it to different equipment.
- Built-in Charge Protection Circuitry — Every battery includes integrated protection electronics that guard against overcharging, over-discharge and thermal runaway conditions. This safety-first design gives you confidence that your battery and connected equipment are well-protected throughout charging and discharging cycles.
Technical Performance
The Spektrum Smart G2 30C LiPo delivers impressive technical specifications engineered for serious RC car enthusiasts. At 7.4V nominal (2 cells in series) with 5000mAh capacity, this pack provides 37 watt-hours of energy — enough to power demanding RC vehicles through extended sessions. The 30C continuous discharge rating enables peak current draws of up to 150 amps (at 5000mAh capacity), while the maximum burst discharge capability extends to the same 30C rating. The battery weighs 315 grams (11.11 ounces) and fits within compact dimensions of 138mm length, 46mm width and 25mm height, making it suitable for a wide range of RC car platforms. The 12 AWG wire gauge provides robust conductivity and heat tolerance for high-current applications. Construction combines aerospace-grade LiPo chemistry with a protective hard case and thicker internal metal side plates that enhance durability and thermal management. The integrated microchip enables real-time monitoring of battery health, with data continuously available through any Spektrum Smart charger. Smart G2 technology represents a fundamental advancement in LiPo battery engineering, combining traditional energy density with intelligent management systems that were previously unavailable at this performance level. Whether you're running a competitive RC car UK circuit or enjoying recreational bashing at your local track, this battery provides the reliable power delivery and intelligent monitoring that separates premium batteries from basic alternatives.
What's in the Box
- 1x Spektrum 7.4V 5000mAh 2S 30C Smart LiPo G2 Hard Case Battery with IC3 Connector
What You Need to Complete
- Spektrum Smart Charger (required for charging and full Smart technology functionality)
- RC vehicle compatible with 2S LiPo batteries and IC3 or EC3 connectors
Frequently Asked Questions
- Do I need a special charger for this Spektrum Smart G2 battery? — Yes, a Spektrum Smart charger is required to take full advantage of Smart G2 technology. The Smart charger communicates with the battery's integrated microchip, automatically uploading all charging parameters and battery health data, and enabling the single-connection charging system without a separate balance lead. Standard chargers will not recognise or optimally charge Smart batteries.
- Can I use this battery with my existing RC car without upgrading equipment? — You can connect this battery to any RC car with an IC3 or EC3 connector, but you will need a Spektrum Smart charger to properly charge it and utilise the Smart features. If your car already uses a Spektrum receiver and you have a Smart charger, you're ready to go immediately. If not, you'll need to update your charger to unlock the battery's full potential.
- What does the 30C rating mean and why does it matter? — The 30C rating indicates the battery can safely discharge at 30 times its capacity continuously. For this 5000mAh battery, that translates to 150 amps of peak current capability. This high discharge rating ensures the battery can deliver the power demanded by responsive, high-performance RC cars without voltage sag or thermal stress, making it suitable for aggressive driving styles and competitive racing.
- How long does the automatic storage discharge take? — Smart G2 batteries automatically discharge to 3.90V per cell after 72 hours of inactivity. Unlike older Smart G1 batteries, the G2 generation completes this storage discharge three times faster, meaning your battery reaches safe storage voltage much more quickly whilst still protecting long-term cell health.
- What makes this better than a standard LiPo battery? — Smart G2 technology fundamentally changes how you interact with LiPo batteries. You never manually configure charging parameters — the battery tells your Smart charger exactly what it needs. The integrated microchip tracks every charge cycle, discharge event, temperature reading and error, allowing you to monitor battery health over time. The single IC3 connection eliminates the hassle of balance leads, and automatic storage discharge removes the maintenance burden. For serious RC enthusiasts, these conveniences translate to better battery longevity, more consistent performance and significantly reduced risk of battery damage from improper handling.
- Is this suitable for beginners? — Absolutely. Whilst this is a high-performance battery for RC cars, the Smart G2 technology actually makes it ideal for beginners because it removes the complexity of manual battery management. New users don't need to understand charging profiles or balance procedures — they simply connect the battery to a Spektrum Smart charger and let the system handle everything automatically. This makes it easier for beginners to avoid costly mistakes whilst learning the hobby.
- What happens if I leave this battery discharged for a long time? — Unlike unmanaged LiPo batteries that can suffer permanent damage if left fully discharged, Smart G2 batteries automatically discharge to a safe storage voltage of 3.90V per cell after 72 hours. This automated maintenance protects the battery from degradation and ensures it's always ready to charge when you want to use it again, even after weeks of storage.
- Can I use this battery in the rain or wet conditions? — The hard case provides physical protection for the battery pack, but you should avoid submerging or exposing the connector to water, as the IC3 connector contains electronic components. The battery itself is not specifically waterproofed for submersion, so use common sense when operating in wet weather.
- How many times can I charge this battery before it degrades? — The battery's integrated microchip tracks every single charge cycle. Most LiPo batteries maintain good performance for 200-400+ cycles depending on usage patterns and charge rates. You can monitor your specific battery's cycle count through your Spektrum Smart charger, allowing you to make informed decisions about when a battery may be approaching end-of-life.
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 5000mAh 2S 7.4V SMART G2 30C IC3 battery 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.
