Overview
The SPM 3.7V 1S 10500mAh Li-Ion Transmitter Battery is a premium replacement battery engineered specifically for Spektrum radio transmitters. This high-capacity lithium-ion battery delivers reliable, long-lasting power for extended RC flying and driving sessions, making it an essential upgrade for serious RC enthusiasts across the UK who demand consistent performance from their transmitter systems. Whether you're piloting a drone, flying an RC aeroplane, or controlling a ground-based RC vehicle, having a dependable transmitter battery ensures uninterrupted control and peace of mind during your RC sessions.
This is the genuine replacement battery for Spektrum's iX20, iX20SE, NX20, iX14, and iX14+ air transmitters, designed by the manufacturer to deliver optimal compatibility and performance. The 10500mAh capacity provides substantially longer operating time compared to standard batteries, allowing you to enjoy extended flying days without frequent charging interruptions. For RC pilots and operators who want reliability and performance they can trust, this Spektrum battery represents a genuine, authorised solution that meets exacting manufacturer standards.
Long-lasting battery technology is crucial for RC enthusiasts, whether you're flying fixed-wing aircraft, quadcopters, or controlling RC cars and trucks from the ground. When your transmitter battery fails mid-session, it disrupts your RC experience and can compromise safety. The SPM 3.7V 1S 10500mAh battery eliminates these concerns by providing consistent voltage delivery and exceptional runtime, making it the smart choice for anyone serious about their RC hobby in the UK and beyond.
Key Features
- High-Capacity 10500mAh Design — This battery offers significantly greater storage capacity than standard transmitter batteries, which means you can operate your RC transmitter for substantially longer periods between charging cycles. For RC enthusiasts who spend entire days at the field or flying site, this extended runtime translates to more time actually piloting your model rather than waiting for batteries to recharge.
- 3.7V 1S Lithium-Ion Chemistry — The battery utilises reliable lithium-ion cell technology, which is recognised as the gold standard for portable power in the RC industry. Lithium-ion cells provide superior energy density compared to older nickel-cadmium or nickel-metal hydride batteries, delivering more consistent voltage throughout the discharge cycle so your transmitter maintains optimal performance.
- Official Spektrum Replacement Battery — This is the genuine factory replacement battery for multiple Spektrum transmitter models including the iX20, iX20SE, NX20, iX14, and iX14+ air transmitters. Using an authorised replacement battery ensures perfect compatibility, reliable performance, and maintains the integrity of your expensive transmitter investment.
- Includes Protective Battery Case — The package includes a dedicated battery case for safe storage and transportation of your battery when not in use. This protective case shields the battery from physical damage, extends its service life, and ensures safe storage according to lithium battery handling guidelines.
- Premium Build Quality — As a genuine Spektrum product, this battery meets strict manufacturing standards and quality control requirements. You're purchasing from the original equipment manufacturer, guaranteeing that the battery will perform exactly as specified and integrate seamlessly with your Spektrum transmitter system.
Technical Performance
This battery represents cutting-edge transmitter power technology, combining proven lithium-ion chemistry with substantial 10500mAh capacity in a single-cell (1S) configuration delivering 3.7V nominal output. The engineering behind this battery focuses on consistent voltage delivery under varying load conditions, which is essential for maintaining transmitter range, signal stability, and control responsiveness during extended RC operations. Whether you're flying RC aeroplanes, quadcopters, or controlling ground-based RC vehicles, the SPM battery provides the reliable power delivery that professional and recreational RC operators demand. The single-cell design integrates seamlessly with Spektrum's iX20, iX20SE, and NX20 transmitters, as well as the iX14 and iX14+ models, ensuring perfect compatibility without any modification required. The lithium-ion chemistry provides superior energy retention compared to older battery technologies, meaning your transmitter maintains full operational range throughout the battery's discharge cycle. This is particularly important during critical RC operations where voltage sag could compromise control fidelity or reduce transmission range at critical moments.
What's in the Box
- 3.7V 10500mAh 1S Li-Ion Transmitter Battery
- Protective Battery Case for safe storage and transport
Frequently Asked Questions
- Is this battery compatible with my Spektrum transmitter? — This battery is the official replacement for Spektrum iX20, iX20SE, NX20, iX14, and iX14+ air transmitters. If you own any of these models, this is the genuine factory replacement battery designed by Spektrum for your specific transmitter. Check your transmitter model number to confirm compatibility before purchasing.
- How much longer will this battery run compared to the standard battery? — The 10500mAh capacity represents a substantial increase over typical transmitter batteries, providing significantly extended runtime. Exact operational time depends on your transmitter usage patterns, channel activity, and LCD screen brightness settings, but you can expect many additional hours of operation between charging sessions compared to lower-capacity alternatives.
- Is this a genuine Spektrum battery or a third-party clone? — This is the genuine official Spektrum battery manufactured by Horizon Hobby, the parent company of Spektrum. Purchasing from authorised retailers ensures you receive an authentic product that meets Spektrum's quality standards and carries full manufacturer support, unlike third-party alternatives which may lack reliability or compatibility.
- What charging method should I use for this battery? — As a lithium-ion battery, this should be charged with a charger specifically designed for lithium-ion cells. Many modern multi-chemistry RC chargers support 1S lithium charging. Never attempt to charge this battery using chargers designed for older battery chemistries like nickel-cadmium or nickel-metal hydride, as this could damage the battery or create safety hazards.
- How long does this battery take to charge? — Charge time depends on your charger's output current and specifications. Modern lithium chargers can typically fully charge a 10500mAh battery in 2-4 hours depending on the specific charger used. Refer to your charger's documentation for precise charging times.
- Can I use this battery in aircraft as well as ground-based RC vehicles? — This battery is specifically engineered as a transmitter battery for operating Spektrum air transmitters. It is not designed as a power source for RC model aircraft or vehicle motors, and should only be used as a replacement transmitter battery for compatible Spektrum radio systems.
- Is this better than upgrading to a different brand transmitter? — If you already own a Spektrum transmitter, upgrading the battery is far more economical than purchasing a new transmitter system. The SPM 10500mAh battery provides excellent value by extending your current transmitter's usable runtime without requiring expensive equipment replacement, making it an intelligent investment for existing Spektrum owners.
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 3.7V 1S 10500mAh Li-Ion Transmitter Battery: iXSR O-SPMB10500LITX5 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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