- Battery type: LiFe
- Capacity: 3000 mAh
- Cells: 2
- Connectors: EC3
- Voltage: 6.6 V
- Watt Hours: 19.8 Wh
- Weight: 132 g
- Height: 21 mm
- Length: 70 mm
- Width: 50 mm
- Battery Type: LiFe (Lithium Iron Phosphate)
- Voltage: 6.6V nominal (3.3V per cell)
- Capacity: 3000mAh
- Cell Configuration: 2S (two cells in series)
- Energy Content: 19.8Wh
- Discharge Connector: EC3
- Balance Connector: JST-XH
- Balance Lead Length: 50mm
- Discharge Lead Length: 150mm
- Discharge Wire Gauge: 16 AWG
- Maximum Charge Current: 3.0A
- Maximum Charge Rate: 1C
- Normal/Standard Charge Current: 600mA
- Normal/Standard Charge Rate: 0.2C
- Maximum Continuous Discharge Current: 60A
- Maximum Continuous Discharge Rate: 20C
- Charge Protection Circuitry: None (internal protection not included)
- Hard Case: No
- Product Length: 70mm
- Product Width: 50mm
- Product Height: 21mm
- Product Weight: 132g (4.6 oz)
- Application: Aircraft Receiver, Aircraft Ignition
Overview
The SPM 3000mAh 2S 6.6V Li-Fe Receiver Battery is a premium power solution designed specifically for aircraft receivers and ignition systems. This professional-grade receiver battery represents the latest in lithium iron phosphate (LiFe) technology, delivering reliable, consistent power for your RC aircraft throughout extended flight sessions. Whether you're flying vintage warbirds, modern sport planes, or competition aerobats, this battery provides the dependable performance that serious RC enthusiasts demand. LiFe batteries have become the preferred choice for discerning RC pilots in the UK who want superior reliability and safety compared to older lithium polymer alternatives.
Built by Spektrum, a globally recognised leader in RC radio control systems and power solutions, this receiver battery combines cutting-edge chemistry with thoughtful engineering. The 6.6V nominal voltage (delivered by two 3.3V cells) ensures compatibility with most modern aircraft receiver systems, whilst the generous 3000mAh capacity means you can enjoy longer flight times without constantly swapping batteries between planes. The battery's compact dimensions and relatively light weight of just 132 grams make it an ideal choice for weight-conscious applications where every gram matters.
This battery is perfect for RC pilots ranging from experienced competitors to dedicated weekend flyers who value consistency and safety. If you've been searching for a high-capacity aircraft receiver battery with proven reliability, superior cycle life, and the peace of mind that comes with Spektrum's engineering credentials, the SPM 3000mAh 2S 6.6V Li-Fe Receiver Battery is your answer.
Key Features
- LiFe Chemistry — Lithium iron phosphate cells offer significantly safer operation than older lithium polymer designs, with inherently more stable chemistry that resists thermal runaway and maintains voltage stability throughout discharge cycles, making this the smart choice for serious RC enthusiasts.
- 6.6V Nominal Voltage — Two 3.3V LiFe cells deliver the precise voltage required by universal receiver systems and aircraft ignition applications, ensuring perfect compatibility with your receiver electronics without modification or additional regulators.
- 3000mAh Capacity — This substantial capacity provides extended operational time between charges, allowing you to enjoy longer flying sessions and reduce the frequency of battery swaps during a full day at the field.
- EC3 Connector — The heavy-duty EC3 discharge connector is widely recognised as the gold standard in RC receiver applications, offering secure connection, minimal voltage drop, and excellent reliability across thousands of connect-disconnect cycles.
- JST-XH Balance Connector — The integrated JST-XH balance lead (50mm length) enables cell-level monitoring and balancing during charging, ensuring optimal cell health and maximum battery lifespan with compatible chargers.
- 150mm Discharge Lead — The extended 150mm discharge lead provides excellent flexibility for installation in tight aircraft fuselage spaces, allowing you to position the battery and route wiring for optimal weight distribution and airflow.
- High Discharge Rate — With a maximum continuous discharge rate of 20C (60A maximum continuous discharge current), this battery delivers the responsive power needed for servo actuation, receiver operation, and ignition systems without voltage sag or performance lag.
- Fast Charging Capability — The 1C maximum charge rate (3.0A maximum charge current) means you can fully recharge the battery in approximately one hour using appropriate charging equipment, getting back to flying quickly between sessions.
- Professional Build Quality — Constructed with 16 AWG discharge wiring and military-grade cell selection, this battery meets Spektrum's exacting quality standards and represents genuine aerospace-grade power technology adapted for RC applications.
- 19.8Wh Energy Content — The battery's energy rating provides excellent capacity-to-weight ratio, delivering meaningful flight time without the bulk and weight penalties of comparable lithium polymer solutions.
Technical Performance
The SPM 3000mAh 2S 6.6V Li-Fe Receiver Battery represents the pinnacle of receiver power technology, engineered for aircraft applications where reliability and consistent performance are absolutely critical. At just 132 grams (4.6 ounces) and measuring a compact 70mm length × 50mm width × 21mm height, this battery delivers an exceptional power-to-weight ratio that makes it ideal for minimising aircraft loading whilst maintaining full operational capabilities. The dual-cell LiFe configuration operates at 6.6V nominal voltage, perfectly matching the input requirements of modern receiver systems without regulators or adapters. Built with premium-grade cells arranged in a parallel-fused configuration, the battery features Spektrum's proven LiFe chemistry which has been flight-tested across thousands of aircraft worldwide. The 16 AWG discharge wiring provides minimal resistance and heat generation during high-current servo operations, whilst the 150mm lead length offers optimal routing flexibility in tight fuselage spaces. The robust EC3 connector has become the industry standard for receiver applications, offering repeatable, low-resistance connections that maintain signal integrity and power delivery consistency flight after flight. With a 20C continuous discharge rate capability and 60A peak discharge current available on demand, this battery ensures that servo actuation remains crisp and responsive even during demanding aerobatic manoeuvres. The integrated JST-XH balance connector enables cell-level voltage monitoring, allowing contemporary digital chargers to maintain perfect cell balance and extend overall battery lifespan. Spektrum's advanced cell chemistry means the battery delivers strong voltage under load throughout its discharge cycle, eliminating the gradual voltage sag that compromises performance in the closing minutes of flight. This is genuine professional-grade receiver power technology, not consumer-level batteries repurposed for RC applications.
What's in the Box
- SPM 3000mAh 2S 6.6V Li-Fe Receiver Battery with EC3 discharge connector
- JST-XH balance connector (50mm lead) for cell monitoring and balancing
- EC3 discharge connector with 150mm lead for secure aircraft installation
What You Need to Complete
- Compatible charger capable of lithium iron phosphate (LiFe) cell chemistry — standard lithium polymer chargers are not suitable for LiFe batteries and may cause cell damage
- EC3 to receiver connector adapter (if your receiver uses alternative connector types)
- Battery monitoring equipment (optional but recommended for tracking cell health and voltage)
Frequently Asked Questions
- What is the difference between LiFe and LiPo receiver batteries? — LiFe (lithium iron phosphate) batteries offer significantly safer chemistry compared to older LiPo (lithium polymer) designs. LiFe cells are inherently more thermally stable, resist thermal runaway, and maintain more consistent voltage throughout the discharge cycle. LiFe batteries also have superior cycle life, often lasting 2-3 times longer than comparable LiPo cells. The trade-off is that LiFe cells have a lower energy density, which is why you'll notice slightly larger physical dimensions compared to equivalent capacity LiPo batteries. For receiver applications where safety and reliability are paramount, LiFe is the superior choice.
- Is this battery suitable for my aircraft receiver? — The SPM 3000mAh 2S 6.6V LiFe battery is designed for universal receiver applications and aircraft ignition systems operating at 6V nominal voltage. If your receiver is rated for 6V, 5-6V, or 4-6V, this battery is directly compatible. However, if your receiver requires 4.8V (traditional four-cell NiMH) or 7.4V (2S LiPo), you will need a different battery. Always verify your receiver's voltage specification before purchasing.
- How long does this battery take to charge? — Using the recommended 0.2C charging rate (600mA for this 3000mAh battery), a full charge from completely depleted takes approximately 5 hours. However, the battery supports up to 1C charging rate (3.0A maximum), which reduces charge time to approximately 1 hour if your charger supports this rate. Always follow your charger manufacturer's recommendations and LiFe charging protocols to ensure safety and maximum lifespan.
- What charger do I need for LiFe batteries? — You must use a charger specifically programmed for lithium iron phosphate (LiFe) chemistry. Standard lithium polymer (LiPo) chargers will not correctly charge LiFe cells and may cause cell damage or charging errors. Contemporary digital RC chargers from brands like Spektrum, iCharger, and others include specific LiFe charging modes. Set your charger to LiFe mode, confirm the cell count (2S), and charge at your preferred rate (0.2C for safety or up to 1C if time is limited).
- Can I use this battery in multiple aircraft? — Absolutely. The EC3 connector and 150mm discharge lead make installation straightforward in most aircraft designs. Many pilots keep one battery charged and move it between aircraft throughout a flying session. The compact size (70mm × 50mm × 21mm) fits easily in most fuselage battery compartments.
- What is the 19.8Wh specification? — Watt hours (Wh) is a measure of total energy content, calculated by multiplying voltage (6.6V) by capacity (3000mAh). This tells you the total energy the battery stores. Higher Wh ratings mean longer flight times, all else being equal.
- How many flight hours will this battery provide? — Flight time depends entirely on your receiver's current draw, which varies based on how many servos you're operating, how actively you're using them, and receiver type. Typical modern receivers draw 150-300mA during normal flight. With 3000mAh capacity, you can expect 10-20 hours of receiver runtime, meaning you could fly dozens of flights before needing a recharge.
- Does this battery have built-in protection circuitry? — According to specifications, this battery does not include internal protection circuitry. This is typical for aircraft receiver batteries where weight minimisation is critical and reliable charger operation is assumed. Always use a quality charger with appropriate LiFe safety features and never leave the battery unattended during charging.
- Is there a hard case included? — No, this battery does not include a hard protective case. However, the durable cell construction and connector design provide adequate protection for normal use. Many pilots choose to store batteries in soft pouches or foam cases for additional protection during transport and storage.
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 3000mAh 2S 6.6V Li-Fe Receiver Battery O-SPMB3000LFRX 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.
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
