- Battery type: LiFe
- Capacity: 2200 mAh
- Cells: 2
- Connectors: EC3
- Voltage: 6.6 V
- Watt Hours: 14.52 Wh
- Weight: 132 g
- Height: 21 mm
- Length: 70 mm
- Width: 49 mm
- Battery Type: Lithium Iron Phosphate (LiFe)
- Capacity: 2200 mAh
- Number of Cells: 2S (two cells in series)
- Nominal Voltage: 6.6V
- Watt-Hours: 14.52Wh
- Connector Type: EC3
- Length: 70 mm
- Width: 49 mm
- Height: 21 mm
- Weight: 132 grams
- Chemistry: LiFe (Lithium Iron Phosphate)
- Application: Universal Receiver Battery
- Compatibility: Spektrum receivers and universal receiver systems with EC3 connectors rated for 6.6V input
- Discharge Rate: 15C
- Maximum Charge Rate: 1C
Overview
The SPM 2200mAh 2S 6.6V Li-Fe Receiver Battery is a professional-grade power source designed specifically for RC receiver applications. Whether you're piloting an RC car in the UK, flying an RC aircraft, or operating any other radio-controlled model, this Spektrum battery delivers reliable, consistent performance for extended flight or run times. LiFe (Lithium Iron Phosphate) technology has become the gold standard for receiver batteries across the RC hobby community, offering superior safety characteristics and excellent cycle life compared to traditional NiMH batteries. This particular model is engineered to work seamlessly with universal receiver setups, making it an ideal replacement or upgrade battery for enthusiasts who demand quality and dependability.
Spektrum is a globally recognised brand within the RC hobby, trusted by competitors, weekend enthusiasts, and professionals alike. The 2200mAh capacity provides substantial runtime whilst remaining compact enough to integrate into most RC vehicle installations. With its EC3 connector standard, this battery integrates easily into existing receiver systems across a wide range of RC models. For anyone serious about their RC hobby—whether you're into ready-to-run RC cars, competitive surface racing, or dedicated RC aircraft operations—investing in a quality receiver battery like this ensures your model remains powered reliably throughout your session.
The LiFe chemistry itself represents a significant advancement in battery technology for RC applications. Unlike older battery types, LiFe cells deliver consistent voltage throughout the discharge cycle, meaning your receiver and servos maintain optimal performance from the moment you power up until the battery is depleted. This voltage stability translates directly into more responsive steering, smoother control inputs, and better overall handling characteristics on any RC car or aircraft you're operating. The 2S configuration (two cells in series) produces the 6.6V output that many RC receivers and servo systems require, making this battery a plug-and-play solution for numerous Spektrum radio systems and compatible universal receiver setups.
Key Features
- 2200mAh Capacity — The 2200 milliamp-hour rating provides excellent runtime for extended RC sessions, giving you more flying or driving time before requiring a recharge. This capacity strikes an ideal balance between weight and endurance, particularly important in RC car UK applications where longer run times translate to more enjoyment per charge cycle.
- 2S LiFe Chemistry — Two-cell Lithium Iron Phosphate configuration produces 6.6 volts of nominal output, delivering the precise voltage specifications required by most Spektrum receivers and universal receiver systems. LiFe technology is renowned for its safety profile and cycle life, meaning you'll enjoy hundreds of charge cycles from this battery before capacity degradation becomes noticeable.
- EC3 Connector — The standard EC3 connector provides reliable, secure electrical connections and is widely compatible across the RC hobby ecosystem. This connector type is recognised as the industry standard for receiver batteries, ensuring you can integrate this battery into virtually any receiver system designed for 6.6V LiFe power sources.
- Compact Dimensions — Measuring just 70mm in length, 49mm in width, and 21mm in height, this battery is engineered to fit within tight RC chassis spaces without requiring significant modification or compromising weight distribution. The compact form factor makes installation straightforward in both scale models and performance-oriented race vehicles.
- Lightweight Design — At only 132 grams, this battery contributes minimal weight to your RC model, allowing for better handling characteristics and more responsive control performance. Lower unsprung weight also benefits suspension geometry and overall stability across various driving or flying conditions.
- Watt-Hour Rating — The 14.52Wh energy storage capacity ensures sufficient power delivery for demanding receiver loads whilst maintaining the voltage stability that modern digital servos require for precision control inputs.
- Universal Receiver Compatibility — Designed to work with any universal receiver setup featuring EC3 connectors and 6.6V specifications, this battery maximises your options for system configuration across multiple RC models without proprietary limitations.
- Spektrum Brand Assurance — As a genuine Spektrum product, you're purchasing a battery that meets stringent quality control standards and engineering specifications. Spektrum's reputation in the RC community is built on reliability and performance—qualities directly reflected in this receiver battery.
Technical Performance
The SPM 2200mAh 2S 6.6V Li-Fe Receiver Battery represents the pinnacle of modern receiver power technology. Built using Lithium Iron Phosphate cell chemistry, this battery offers remarkable advantages over older nickel-metal-hydride (NiMH) technologies that dominated receiver power solutions for years. The key performance characteristic that sets LiFe batteries apart is voltage stability—throughout the discharge cycle, a properly designed LiFe battery maintains voltage output far more consistently than NiMH alternatives. This consistency matters significantly in practical RC applications because your receiver and servos operate at peak efficiency when voltage remains steady. Digital servos particularly benefit from stable voltage, responding with crisp, precise movements that directly translate into better handling and more accurate control inputs on your RC car, truck, or aircraft.
The engineering behind this specific model demonstrates Spektrum's commitment to quality. The 2-cell configuration delivers 6.6 nominal volts (measured at the discharge midpoint), which matches the standard operating voltage for Spektrum receivers and most universal receiver systems. The 2200mAh capacity was deliberately chosen to provide extended runtime without excessive weight penalty—a critical balance in RC applications where every gram affects performance. The battery measures 70mm x 49mm x 21mm, dimensions carefully optimised to fit within the compact receiver compartments found in modern RC vehicles ranging from compact ready-to-run RC cars to larger scale models. The 132-gram weight is kept deliberately minimal to avoid adversely affecting your model's handling characteristics or power-to-weight ratio.
Construction quality is evident in every aspect of this receiver battery. The protective casing is designed to survive the vibration, shock, and handling stress inherent in RC hobbies. The EC3 connector is gold-plated for optimal electrical conductivity and corrosion resistance, ensuring reliable power delivery without voltage drops caused by oxidation or poor connections. The internal cell arrangement and protective circuitry reflect professional engineering practices that prioritise both safety and longevity. LiFe chemistry is inherently safer than LiPo (Lithium Polymer) alternatives, meaning this battery has a significantly lower risk of thermal runaway or fire in the unlikely event of damage, a quality particularly appreciated by dedicated RC hobbyists who operate their models intensively.
What's in the Box
- SPM 2200mAh 2S 6.6V Li-Fe Receiver Battery with EC3 connector
Frequently Asked Questions
- What is the difference between LiFe and LiPo batteries for RC applications? — LiFe (Lithium Iron Phosphate) batteries like this model offer superior safety characteristics compared to LiPo batteries, with significantly lower risk of thermal runaway if damaged. LiFe cells also provide more consistent voltage output throughout the discharge cycle, meaning your receiver and servos maintain peak performance from start to finish. Additionally, LiFe batteries typically offer longer cycle life—you'll achieve more charge-discharge cycles before capacity degrades. However, LiFe batteries are heavier than equivalent-capacity LiPo alternatives, which is why they're ideal for receiver applications where weight is less critical and safety and longevity are paramount.
- Is this battery suitable for a beginner in the RC hobby? — Absolutely. This Spektrum receiver battery is an excellent choice for anyone entering the RC hobby because it's safe, reliable, and compatible with virtually any receiver system using the standard EC3 connector. Beginners particularly benefit from LiFe technology's safety profile and straightforward charging requirements. Unlike some advanced battery types requiring sophisticated balance chargers or specialised management, LiFe batteries are forgiving and suitable for hobbyists of all experience levels.
- What voltage does this battery provide and why does that matter? — This battery provides 6.6 nominal volts from its 2-cell LiFe configuration. This voltage is the standard specification for most Spektrum receivers and universal receiver systems. Voltage matters because your receiver's performance—including servo response speed and control precision—directly depends on receiving adequate, stable power. Under-voltage conditions cause servos to lose torque and responsiveness, whilst over-voltage can damage sensitive receiver electronics. At 6.6V, this battery delivers exactly what your receiver needs.
- How long will this battery last per charge? — Runtime depends on receiver current draw, which varies based on your specific receiver model, the number of servos attached, and how actively those servos are working. Generally, a 2200mAh receiver battery provides several hours of typical operation in most RC cars or aircraft. The voltage stability of LiFe chemistry means you'll maintain consistent servo performance throughout this runtime, rather than experiencing performance degradation as battery voltage drops.
- Can I use this battery in my transmitter? — No, this battery is specifically engineered and rated for receiver applications. Transmitters typically require different voltage specifications and capacity ratings than receivers. Always consult your transmitter's specifications before purchasing a battery—using an incorrect battery could damage your expensive radio equipment.
- How many charge cycles will I get from this battery? — LiFe batteries are renowned for exceptional cycle life. You should expect 200-300+ complete charge-discharge cycles from this battery before capacity degrades below usable levels. This longevity makes LiFe receiver batteries exceptional value over time compared to older NiMH technology.
- What charger do I need for this battery? — You'll need a charger capable of charging 2S LiFe batteries. Most modern RC chargers, particularly those from reputable manufacturers like Spektrum, include LiFe charging profiles. Ensure your charger specifically supports LiFe chemistry—attempting to charge LiFe batteries with chargers designed only for NiMH or LiPo could result in battery damage or safety issues.
- Is the EC3 connector the right type for my receiver? — The EC3 connector is the industry standard for receiver batteries and is widely compatible across the RC hobby. However, you should verify that your specific receiver uses EC3 connectors. Some older or specialised receiver systems may use alternative connector types. Check your receiver documentation before purchasing.
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 2200mAh 2S 6.6V Li-Fe Receiver Battery O-SPMB2200LFRX 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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