- Battery type: LiFe
- Capacity: 300 mAh
- Cells: 2
- Connectors: Universal
- Voltage: 6.6 V
- Watt Hours: 1.98 Wh
- Height: 14 mm
- Length: 50 mm
- Width: 20 mm
- Battery Type: LiFe (Lithium Iron Phosphate)
- Nominal Voltage: 6.6V
- Cell Configuration: 2S (two cells at 3.3V per cell)
- Capacity: 300mAh
- Watt Hours: 1.98 Wh
- Balance Connector: JST-XH
- Balance Lead Length: 50mm (1.97 inches)
- Discharge Lead Length: 150mm (5.91 inches)
- Wire Gauge: 20 AWG
- Maximum Charge Current: 300mA
- Standard Charge Current: 60mA
- Standard Charge Rate: 1C
- Maximum Continuous Discharge Current: 6A
- Maximum Continuous Discharge Rate: 20C
- Product Weight: 24g (0.8 oz)
- Product Length: 50mm (1.97 inches)
- Product Width: 20mm (0.79 inches)
- Product Height: 14mm (0.55 inches)
- Application: Universal Receiver Battery
- Compatibility: Spektrum receivers and universal receiver systems
Overview
The SPM 300mAh 2S 6.6V Li-Fe Receiver Battery is an essential component for RC enthusiasts across the United Kingdom who demand reliable, long-lasting power for their receiver systems. Whether you're piloting a high-performance RC car UK, a precision RC drone, or any other model requiring a dedicated receiver battery, this Spektrum-engineered power cell delivers consistent performance and dependable energy transfer. LiFe (Lithium Iron Phosphate) technology has become the gold standard for receiver power applications in the RC hobby, offering superior cycle life, thermal stability, and safety compared to older battery chemistries. This compact yet powerful 300mAh capacity is perfectly suited for modern receiver systems that demand clean, stable voltage delivery across extended flight or run sessions.
The 2S configuration provides 6.6 volts of nominal output—precisely calibrated for universal receiver applications across virtually all major RC radio systems and platforms. Built to the exacting standards Spektrum is renowned for, this battery combines premium engineering with practical hobbyist pricing, making it an excellent choice whether you're setting up your first ready to run RC model or maintaining a well-established fleet of vehicles and aircraft. The LiFe chemistry ensures you'll enjoy hundreds of charge cycles with minimal capacity loss, meaning your investment today will serve you reliably for seasons to come. RC enthusiasts appreciate LiFe batteries for their exceptional safety profile, resistance to damage from deep discharge, and their ability to maintain stable voltage output throughout the discharge cycle—critical factors when powering the sensitive electronics in your receiver systems.
For serious RC competitors, weekend bashers, and everyone in between, having a dedicated, high-quality receiver battery in your spares box is simply good practice. The SPM 300mAh 2S represents the kind of attention to power system detail that separates successful, reliable RC operations from frustrating downtime and lost flying or driving sessions. Its compact dimensions and lightweight construction (just 24 grams) mean it fits neatly into tight receiver battery compartments without adding unwanted mass or affecting your model's balance characteristics. Trust Spektrum engineering and invest in receiver battery power that works as hard as you do.
Key Features
- LiFe Chemistry (Lithium Iron Phosphate) — This advanced battery chemistry delivers superior performance compared to traditional NiMH receiver batteries, offering dramatically extended cycle life, better thermal stability, and enhanced safety characteristics that make it the preferred choice for discerning RC enthusiasts throughout the UK hobby community.
- 6.6V Nominal Output with 2S Configuration — The two-cell LiFe configuration produces exactly 6.6 volts of nominal voltage, delivering the precise power delivery that modern receiver systems demand for reliable signal reception, servo response, and system stability during extended operating sessions.
- 300mAh Capacity — This capacity provides sufficient energy storage for typical receiver duty cycles, ensuring your model maintains consistent performance throughout extended flights or driving sessions without requiring mid-session battery changes.
- Universal Receiver Compatibility — Engineered to work with virtually all major receiver systems and radio platforms, this battery integrates seamlessly into existing setups or new builds, eliminating compatibility concerns and allowing you to standardise your battery infrastructure across your entire RC fleet.
- JST-XH Balance Connector — The included balance connector enables precise voltage balancing during charging, protecting your battery investment and ensuring both cells maintain perfectly matched voltage for optimal lifespan and performance reliability.
- Extended Discharge Lead (150mm) — The 5.91-inch discharge lead provides convenient routing through your model's fuselage or chassis, allowing flexible battery placement and clean wire management without requiring additional adaptors or extensions.
- 20A Maximum Continuous Discharge Current — With a 20C discharge rate capability, this battery can safely deliver up to 6 amps of continuous current, providing the clean, stable power that receiver systems require while maintaining excellent thermal characteristics and safety margins.
- Compact, Lightweight Construction — Weighing just 0.8 ounces (24 grams) and measuring a mere 50mm × 20mm × 14mm, this battery slots into tight receiver battery compartments without compromising your model's weight distribution or aerodynamic/chassis balance.
- Genuine Spektrum Engineering — Built by Spektrum, a recognised leader in RC radio system design and battery technology, you're investing in products engineered and tested to the highest professional standards, backed by Spektrum's reputation for reliability and performance.
- Premium Charge Characteristics — With a maximum charge current of 300mA and a standard charge rate of just 60mA (1C), this battery accepts intelligent charging protocols that protect longevity whilst enabling rapid turnaround when needed, combining convenience with long-term value.
Technical Performance
The SPM 300mAh 2S 6.6V Li-Fe Receiver Battery represents a pinnacle of engineering precision designed specifically for the demanding power requirements of modern RC receiver systems. LiFe (Lithium Iron Phosphate) chemistry has fundamentally changed receiver power delivery in the RC hobby, offering performance characteristics that simply cannot be matched by older alkaline or nickel-metal-hydride alternatives. This battery delivers 1.98 watt-hours of total energy, carefully calibrated to sustain receiver operation throughout extended RC sessions without the voltage sag or capacity degradation associated with inferior battery types. The engineering specification allows for a maximum continuous discharge current of 6 amps with a 20C discharge rate, meaning the battery can reliably deliver the clean, stable power that modern servo systems and receiver electronics demand for precise signal reception and response. The thermal stability of LiFe chemistry ensures that even during periods of continuous operation or in varying ambient temperatures, voltage output remains consistent and predictable—a critical requirement for reliable servo performance across your entire flight or driving envelope.
Construction quality reflects Spektrum's meticulous attention to detail throughout the manufacturing process. The battery employs premium internal cell architecture with robust internal protective mechanisms, ensuring safe operation even under challenging conditions. The 20 AWG wire gauge provides excellent current carrying capacity whilst maintaining flexibility for routing through confined spaces in airframes or vehicle chassis. With a proven maximum charge current of 300mA and standard charge rate of just 60mA (1C), the battery accepts both fast charging protocols for convenience and conservative charging for maximum lifespan extension. The JST-XH balance connector facilitates precise balancing across both cells, maintaining perfectly matched cell voltages that maximise cycle life and ensure optimal performance. Spectacularly reliable across hundreds of charge-discharge cycles with minimal capacity fade, this battery represents the kind of engineering integrity that keeps serious RC operations running smoothly throughout the season and beyond. Whether powering receivers in competitive racing environments, demanding aerobatic flying, or casual weekend bashing, this Spektrum power cell delivers the dependable, consistent performance that RC enthusiasts demand and deserve.
What's in the Box
- SPM 300mAh 2S 6.6V Li-Fe Receiver Battery
- Integrated JST-XH balance connector
- 50mm balance lead (1.97 inches)
- 150mm discharge lead (5.91 inches)
Frequently Asked Questions
- Is this LiFe battery suitable for my Spektrum receiver system? — Yes, absolutely. This battery is specifically engineered as a universal receiver battery compatible with Spektrum receiver systems and other major RC radio platforms. The 6.6V nominal output (2S LiFe configuration) matches the voltage requirements of modern receiver electronics, ensuring reliable signal reception and servo response throughout your operating sessions. Whether you're flying fixed-wing aircraft, helicopters, or operating ground vehicles, this battery delivers the clean, stable power that receiver systems require.
- What are the advantages of LiFe chemistry over traditional NiMH receiver batteries? — LiFe (Lithium Iron Phosphate) offers several decisive advantages over older nickel-metal-hydride chemistry. LiFe batteries provide dramatically extended cycle life, often lasting 300+ charge cycles compared to 500-1000 for NiMH, meaning your investment delivers superior long-term value. LiFe technology offers enhanced thermal stability, maintaining consistent voltage output even as temperatures fluctuate, which ensures reliable receiver operation across varying weather conditions. Additionally, LiFe chemistry is inherently safer, resistant to damage from deep discharge, and exhibits virtually no memory effect. For serious RC enthusiasts throughout the UK, LiFe represents the clear choice for receiver power applications where reliability and longevity matter.
- How long will this battery power my receiver system? — Runtime depends entirely on your specific receiver configuration, the number of servos connected, and how actively those servos are being exercised during operation. The 300mAh capacity (1.98 watt-hours) provides ample energy for typical receiver duty cycles spanning several hours of flight or driving time. Most RC operators report 4-8 hours of practical receiver runtime per charge, though this varies based on servo activity levels and ambient conditions. The key advantage of the SPM 300mAh is its consistent voltage delivery—unlike older battery chemistries that show voltage sag as capacity depletes, LiFe maintains stable output throughout the discharge cycle, ensuring reliable receiver operation until the battery is nearly completely exhausted.
- What charging equipment do I need for this battery? — This battery accepts charging from any quality LiFe-compatible charger supporting the JST-XH connector standard. You'll require a dedicated LiFe charger rather than a standard LiPo charger, as LiFe cells have different charging voltage requirements (3.6V per cell versus 4.2V for LiPo). The battery supports maximum charge current of 300mA and standard charging at 60mA (1C rate). Many RC hobbyists prefer conservative 1C charging (60mA) to maximise battery lifespan, though faster charging is supported when convenient. Ensure your charger features balance charging capability to maintain perfectly matched cell voltages across both cells.
- Is this battery suitable for beginners with ready to run RC models? — Absolutely. The SPM 300mAh 2S 6.6V Li-Fe Receiver Battery is an excellent choice for anyone operating ready to run RC models, whether you're brand new to the hobby or a seasoned competitor. This is specifically a receiver battery—it powers your receiver and servos, not the main propulsion system—making it a straightforward, low-risk power application. The universal compatibility with major receiver systems, combined with LiFe's inherent safety characteristics, makes this an ideal choice for beginners. Having a dedicated, reliable receiver battery ensures your model maintains dependable signal reception and servo response throughout every operating session.
- Can I use this battery in different models? — Yes, this is precisely why Spektrum engineered this as a universal receiver battery. The 6.6V output and JST-XH connector compatibility make it suitable for a wide range of RC applications—aircraft, helicopters, cars, trucks, boats—provided your receiver system requires 2S voltage. This universal nature means you can maintain a single battery as a spare across your entire RC fleet, improving inventory efficiency and ensuring you're always prepared with backup receiver power.
- How should I store this battery when not in use? — For optimal longevity, store your LiFe receiver battery in a cool, dry location. Ideally, maintain the battery at approximately 50% state of charge during extended storage periods. Unlike LiPo batteries, LiFe cells are extremely robust and can tolerate storage over extended periods without capacity loss or damage risk. Check the battery periodically during storage and perform a maintenance charge every few months to ensure cells remain in perfect balance. The inherent safety characteristics of LiFe chemistry mean you can store this battery with confidence, without the fire risk concerns associated with other lithium-based chemistries.
- What makes Spektrum receiver batteries different from budget alternatives? — Spektrum brings decades of professional RC system engineering expertise to every battery they manufacture. Premium internal cell architecture, rigorous quality control, and proven reliability under demanding competitive conditions distinguish Spektrum products from budget alternatives. When you purchase a Spektrum battery, you're investing in products engineered to stringent professional standards, manufactured with premium materials, and backed by comprehensive performance validation. For serious RC enthusiasts who value reliability and long-term value, Spektrum's attention to engineering detail justifies the investment.
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 300mAh 2S 6.6V Li-Fe Receiver Battery O-SPMB300LFRX 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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