Overview
The SPM 4000mAh 2S 7.4V LiPo Receiver Battery is a professional-grade power solution designed specifically for Spektrum receivers in RC models across the UK and beyond. This high-capacity lithium polymer battery delivers reliable, consistent power to keep your receiver operating at peak performance during extended RC sessions. Whether you're piloting an RC car, truck, buggy, or any other RC vehicle that uses a Spektrum receiver system, this battery ensures stable receiver function, reliable signal transmission, and responsive control throughout your flying or driving experience. The 4000mAh capacity provides extended runtime, making it an excellent choice for competitive racers, weekend enthusiasts, and serious RC hobbyists who demand reliability and performance.
Receiver batteries are critical components in any RC setup—they power the receiver module that processes your radio signals and controls all the servos and ESCs in your model. A quality receiver battery like this Spektrum unit ensures you maintain consistent radio reception and servo response, preventing signal dropouts or sluggish control inputs that can ruin your RC experience or worse, cause loss of control. The SPM 4000mAh LiPo receiver battery is engineered to meet Spektrum's exacting standards and is compatible with universal Spektrum receivers, making it a versatile choice for your RC car UK collection or any Spektrum-equipped model.
This battery represents excellent value for RC enthusiasts who want to upgrade their receiver power supply or need a reliable spare battery for extended RC sessions. LiPo technology offers superior energy density compared to older NiMH or LiFe alternatives, meaning you get more power in a compact, lightweight package that won't unbalance your model or add unnecessary weight. For any serious RC hobbyist running Spektrum radio systems, having quality receiver batteries on rotation ensures you're always ready for your next session without downtime waiting for recharges.
Key Features
- 4000mAh High Capacity — This substantial capacity provides extended runtime for your receiver, ensuring your radio system stays powered throughout long RC sessions without voltage sag or dropout risk that could compromise your model's control response and safety.
- 2S LiPo Chemistry — Two-cell lithium polymer construction delivers the 7.4V nominal voltage that Spektrum receivers require, with superior energy density and lightweight characteristics compared to traditional NiMH receiver batteries commonly used in older RC setups.
- 7.4V Nominal Output — Precisely matched to Spektrum receiver specifications, this voltage ensures optimal receiver performance, clean signal processing, and reliable servo operation across all control channels without risk of under-voltage issues.
- Universal Spektrum Compatibility — Designed to work with universal Spektrum receivers, this battery integrates seamlessly into most modern Spektrum-equipped RC cars, trucks, buggies, crawlers and other RC vehicles sold in the UK market.
- LiPo Advantages — Lithium polymer technology provides superior performance characteristics including higher discharge rates, consistent voltage delivery throughout the discharge cycle, and lower self-discharge rates compared to older battery chemistries, keeping your receiver powered reliably.
- Professional Grade Engineering — Built to Spektrum's quality standards, this battery delivers the reliability and consistency demanded by competitive racers, serious hobbyists, and anyone who can't afford receiver failures during critical RC operations.
Technical Performance
The SPM 4000mAh 2S 7.4V LiPo Receiver Battery represents professional-grade receiver power technology. With its 2-cell lithium polymer construction, this battery delivers consistent 7.4V nominal output (ranging up to approximately 8.4V when fully charged) to power Spektrum receivers reliably throughout extended RC sessions. The 4000mAh capacity provides substantial energy storage, ensuring your receiver maintains signal strength and processing power without voltage sag that could compromise control response or cause servo sluggishness. The LiPo chemistry offers superior performance characteristics compared to traditional NiMH or LiFe receiver batteries—faster discharge capability, more consistent voltage delivery throughout the discharge curve, and significantly better energy density per unit weight. This means your receiver stays powered through longer RC outings without the mid-session voltage drops that plagued older battery technologies. For competitive RC racing in the UK or serious hobbyist use, this battery ensures your radio system performs at its absolute best, with no compromise in signal quality, receiver processing speed, or servo response times that could cost you races or affect your driving control. The robust engineering typical of Spektrum components ensures long service life and reliable operation across countless charge-discharge cycles, making this an excellent investment in receiver system reliability.
What's in the Box
- SPM 4000mAh 2S 7.4V LiPo Receiver Battery
Frequently Asked Questions
- What voltage does this receiver battery provide? — This battery provides 7.4V nominal output from its 2S (2-cell) lithium polymer configuration. When freshly charged, it will output approximately 8.4V maximum, tapering down through the discharge cycle. This 7.4V nominal voltage is the standard specification for Spektrum receivers and ensures optimal receiver performance and servo operation.
- Is this battery compatible with my Spektrum receiver? — Yes, this battery is designed for universal Spektrum receiver compatibility. It works with most modern Spektrum receivers that accept 7.4V input. Always verify your specific receiver's voltage requirements before use—most contemporary Spektrum receivers accept 2S LiPo batteries in the 6.6V to 8.4V range, making this an ideal choice for standard Spektrum setups across RC cars, trucks, buggies, and other RC vehicles.
- How long will this battery power my receiver? — The 4000mAh capacity provides extended runtime compared to smaller capacity receiver batteries. Runtime depends on your specific receiver model's power consumption and the number of servos you're operating, but this high capacity battery will support several hours of typical RC operation. The generous capacity also means you can complete full racing events or lengthy practice sessions without battery concerns.
- What type of charger do I need for this battery? — This LiPo battery requires a compatible LiPo charger capable of charging 2S batteries. Spektrum offers dedicated LiPo charging solutions, and many universal RC battery chargers available in the UK market support 2S LiPo charging. Never use a standard NiMH charger for this LiPo battery, as doing so risks fire or battery damage. Always use a proper LiPo-compatible charger and follow safe charging practices.
- Is this suitable for beginners? — This battery is suitable for any RC enthusiast, from beginners to professionals. However, beginners should ensure they have a proper LiPo charger and understand safe LiPo battery handling practices, including proper storage, charging, and transport. The battery itself simply plugs into your Spektrum receiver—it's the charging and handling that requires responsible practice with LiPo batteries.
- What's the difference between this and smaller capacity receiver batteries? — The 4000mAh capacity is among the largest available for receiver batteries. Larger capacity means longer runtime between charges, less need to swap batteries during extended RC sessions, and more consistent performance as the battery ages. You'll complete more races, longer practice runs, and longer casual driving sessions without battery swaps.
- Can I use this in both RC cars and RC aircraft? — Yes, this battery's 7.4V specification makes it suitable for any RC model equipped with a Spektrum receiver requiring 2S input—RC cars, RC trucks, RC buggies, RC crawlers, RC aircraft, RC helicopters, and other Spektrum-equipped RC vehicles. Verify your specific receiver voltage requirements before installing any new battery.
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 2S 7.4V LiPo Receiver Battery O-SPMB4000LPRX 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.
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