SPM 4000Mah Li Ion Battery: DX6R O-SPMB4000LITX

• Battery Type: LiIon (Lithium-Ion)
• Voltage per Cell: 3.3V
• Nominal Voltage: 3.6V
• Capacity: 4000mAh
• Energy Capacity: 14.4 Watt Hours (Wh)
• Cell Configuration: 1S2P (1 Series, 2 Parallel)
• Number of Cells: 2
• Connector Type: White 2-Pin
• Product Length: 2.64 inches (67mm)
• Product Width: 1.5 inches (38mm)
• Product Height: 0.75 inches (19mm)
• Product Weight: 3.35 ounces (95 grams)
• Intended Use: Spektrum DX6R Transmitter (Tx) Battery
• Application: RC Transmitter Power

Overview

The Spektrum 4000mAh LiIon Battery for DX6R is a premium replacement or spare battery pack designed specifically for the Spektrum DX6R transmitter. As one of the most popular entry-level RC radio systems in the UK RC hobby market, the DX6R has become the go-to choice for beginners and experienced pilots alike who need a reliable, intuitive control system. This high-capacity lithium-ion battery extends your flying or driving sessions significantly, ensuring you have the power you need for longer adventures with your RC car or aircraft. Whether you're a weekend enthusiast enjoying casual RC flying, a competitive racer demanding consistent power delivery, or a newcomer to the world of RC models discovering the joy of remote control vehicles, having a quality spare battery is essential to maximise your time on the field.

Lithium-ion (LiIon) battery technology represents a significant advancement over older nickel-cadmium and nickel-metal hydride systems, offering superior energy density, faster charging, and more consistent voltage delivery throughout the discharge cycle. The Spektrum 4000mAh LiIon Battery delivers the reliability and performance that Spektrum is renowned for across the RC hobby community. At RC Model Shop, we stock authentic Spektrum batteries and components for your RC car UK setup, RC aircraft, or any Spektrum-equipped radio system. This battery is the perfect choice if you need a dependable power source that keeps your DX6R running at peak performance, ensuring your transmitter is always ready for action.

Choosing the right battery for your RC transmitter is crucial—it's the heartbeat of your radio control system. A quality LiIon battery like this ensures stable signal transmission, responsive control inputs, and the confidence that your transmitter won't let you down mid-flight or mid-race. The 4000mAh capacity provides extended runtime, reducing the number of times you need to recharge during a full day of RC activities.

Key Features

• 4000mAh High Capacity — This generous capacity provides extended runtime for your DX6R transmitter, allowing you to spend more time controlling your RC vehicles without frequent recharging, making it ideal for marathon RC sessions or competitive events where consistency is critical.
• LiIon Chemistry (3.3V per cell) — Lithium-ion technology offers superior performance characteristics compared to older battery chemistries, including better energy density, lower self-discharge rates, and more stable voltage delivery throughout the battery's discharge cycle, ensuring your transmitter maintains consistent power delivery.
• 3.6V Nominal Voltage — The 3.6V output is perfectly matched to the DX6R transmitter's requirements, providing optimal performance and ensuring maximum compatibility with Spektrum's precision receiver systems used across the RC hobby in the UK and worldwide.
• 1S2P Cell Configuration — This parallel configuration of cells is engineered to deliver reliable power whilst maintaining safety and longevity, balancing current delivery with the specific power requirements of modern RC transmitters.
• White 2-Pin Connector — The standardised White 2-Pin connector is specifically designed for Spektrum transmitters, ensuring foolproof installation and compatibility with your DX6R radio system without the risk of incorrect connections that could damage your equipment.
• Two Cells — The dual-cell configuration provides robust power delivery and redundancy, with cells working together to ensure consistent voltage output and reliable performance throughout your RC flying or driving sessions.
• Compact Dimensions — Measuring just 2.64 inches in length, 1.5 inches in width, and 0.75 inches in height, this battery is designed to fit perfectly into the DX6R's battery compartment without adding bulk or affecting the transmitter's ergonomics.
• Lightweight at 95g — At only 3.35 ounces, this battery maintains the DX6R's excellent balance and manoeuvrability, ensuring the transmitter remains comfortable to hold and easy to operate during extended RC sessions.
• 14.4 Watt Hours — With 14.4Wh of total energy capacity, this battery offers substantial runtime, delivering hours of reliable operation before requiring a recharge, perfect for all-day RC activities at your local flying field or RC racing venue.

Technical Performance

The Spektrum 4000mAh LiIon Battery represents a masterclass in modern RC transmitter power management. Constructed using lithium-ion cell technology, this battery delivers exceptional performance characteristics that distinguish it from lower-quality alternatives found elsewhere. The 3.6V nominal voltage (3.3V per cell) ensures perfectly calibrated power delivery to your DX6R transmitter's sophisticated control circuitry, maintaining the precise signal integrity required for responsive, lag-free control of your RC car UK builds or aircraft. The 1S2P cell configuration—a single series cell with two cells in parallel—has been engineered by Spektrum's battery specialists to optimise both current delivery and safety, ensuring the transmitter can access full power instantly whilst protecting the battery and radio system from potential faults. With a total energy capacity of 14.4 watt hours across 4000mAh, this battery outperforms many competitor options, providing extended runtime that means fewer interruptions during your RC hobby sessions. The white 2-pin connector is not merely a cosmetic choice—it's a deliberate design decision by Spektrum to ensure that users cannot accidentally connect incompatible batteries to their DX6R, as the white connector is specifically keyed to fit only authorised Spektrum batteries. The physical dimensions (2.64 inches × 1.5 inches × 0.75 inches) have been precisely calculated to fit within the DX6R's battery bay without compromising the transmitter's ergonomic design or weight distribution. At just 95 grams, this battery adds minimal weight to your radio system, crucial for maintaining the comfortable feel that makes the DX6R popular with pilots and drivers worldwide. The engineering quality reflects Spektrum's reputation as a leading RC manufacturer, with quality control standards ensuring each battery meets strict specifications for safety, performance, and longevity.

What's in the Box

• One Spektrum 4000mAh LiIon Battery with White 2-Pin connector ready for immediate use

Frequently Asked Questions

• Is this 4000mAh LiIon battery compatible with my Spektrum DX6R transmitter? — Yes, this battery is specifically engineered for the Spektrum DX6R transmitter and features the white 2-pin connector required for proper fit and function. Always verify that your transmitter matches the DX6R model to ensure compatibility, and do not attempt to use batteries with different connector types.
• How long will this battery power my DX6R radio system? — Runtime depends on how intensively you use your transmitter and the age of the battery. The 4000mAh capacity typically provides 8-12 hours of normal operation for most RC pilots and drivers, though this may vary based on individual usage patterns. If you participate in all-day RC events, we recommend having multiple spare batteries available.
• What type of charger do I need for this LiIon battery? — You must use a charger specifically designed for LiIon batteries. Do not attempt to use chargers designed for NiMh or NiCd batteries, as this can damage the battery and create safety hazards. Spektrum produces dedicated LiIon chargers compatible with this battery, and we stock these at RC Model Shop.
• Why is LiIon technology better than older battery types? — LiIon batteries offer several advantages: superior energy density (meaning more power in the same weight), lower self-discharge rates (meaning your battery retains charge longer when not in use), more consistent voltage delivery throughout the discharge cycle (meaning more stable transmitter performance), and faster charging times. These benefits make LiIon the standard choice for modern RC equipment.
• Should I buy a spare battery? — Yes, absolutely. Having at least one spare battery for your DX6R transmitter is essential for serious RC hobbyists. Batteries naturally degrade over time, and having a backup ensures you can continue enjoying your RC activities even if your primary battery needs replacement. Many UK RC clubs and events involve all-day sessions where multiple charged batteries are invaluable.
• How should I store this battery when not in use? — Store the 4000mAh LiIon battery in a cool, dry place at room temperature. For extended storage periods (more than a few weeks), it's recommended to charge the battery to approximately 50% capacity before storing. Never store a completely discharged battery for extended periods, as this can damage the cells and permanently reduce capacity.
• Is this suitable for beginners? — Absolutely. This battery is an excellent choice for anyone new to RC hobbies who owns a DX6R transmitter. The white 2-pin connector design prevents accidental misconnections, and LiIon batteries are inherently safer than older chemistries. Beginners should simply follow proper charging procedures using an appropriate LiIon charger and avoid dropping or damaging the battery.
• What does the 1S2P cell configuration mean? — 1S2P means one series (hence the single 3.6V output) and two parallel cells. This configuration provides the voltage your DX6R requires whilst offering reliable current delivery. The parallel configuration adds redundancy and stability compared to a single-cell design.

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 LiIon Battery: DX6R O-SPMB4000LITX 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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