Overlander 3350mAh 7.4V 2S 35C LiPo Battery Deans Connector 2569DEANS

Overview

The Overlander 3350mAh 7.4V 2S 35C Supersport Pro LiPo Battery is a premium power source designed for RC enthusiasts who demand consistent, reliable energy for their medium to large-scale RC models. Whether you're flying a large park flyer, soaring with a sport glider, or exploring the exciting world of entry-level EDF jets, this battery delivers the performance and endurance you need to maximise your flight time and enjoy every moment in the sky. Built with precision engineering and quality materials, this LiPo battery is the ideal choice for serious hobbyists across the UK who refuse to compromise on power or reliability.

What sets the Overlander Supersport Pro range apart is its commitment to consistency and durability. Each battery is meticulously hand-matched for internal resistance, voltage and weight, ensuring that every cell works in perfect harmony. With a 35C constant discharge rate and impressive 65C burst capability, this battery delivers lively, responsive power that handles dynamic manoeuvres and energy surges with ease. The 3350mAh capacity provides steady and reliable energy for extended flight sessions, while the compact yet powerful design—measuring just 137 x 43 x 11mm and weighing 163 grams—ensures your RC model remains agile and responsive without unnecessary weight. This is why the Overlander 3350mAh battery has become a top pick for sport flying across the RC car UK community and beyond: it's reliable, responsive, and keeps your flights exciting without performance dips.

Perfect for advanced trainers, sport gliders and larger park flyers, this battery represents the ideal balance between capacity and performance. If you're looking for a ready to fly RC solution with genuine power credentials, the Overlander 3350mAh 7.4V 2S 35C Supersport Pro LiPo Battery with Deans connector is your answer. You'll have the power to explore and enjoy every moment in the sky, knowing you're using a battery engineered for excellence.

Key Features

• 3350mAh Capacity and 7.4V Configuration — This combination delivers robust power specifically tailored for large park flyers, sport gliders and entry-level EDF jets, giving you extended flight times and consistent performance throughout your flying sessions. The 7.4V (2S) voltage is widely compatible with most RC applications, making it a versatile choice for many different model types across the UK RC market.
• 35C Constant Discharge with 65C Burst Capability — The 35C constant discharge rate ensures steady, reliable power delivery for smooth throttle response and dependable performance during sustained flight. The 65C burst rating provides a powerful turbo boost for those intense moments when you need extra juice, such as during tight aerobatic manoeuvres, sudden climbs or aggressive turns. This dual-rating system means your battery stays responsive without breaking a sweat, even during demanding flight scenarios.
• Hand-Matched Fullymax Cells — Each battery features precisely matched cells that are individually tested for internal resistance, voltage and weight consistency. This meticulous matching process ensures uniform energy output across all cells, delivering superior reliability and performance that you can count on flight after flight. Advanced testing processes verify cell performance, whilst ultrasonic welding strengthens connections, enhancing durability under tough conditions.
• Compact and Lightweight Design — At 137 x 43 x 11mm and weighing just 163 grams, this battery combines strong performance with a sleek profile that fits perfectly into larger RC models without disrupting balance or agility. The compact form factor means more payload capacity and better overall model performance, whether you're flying a ready to run RC glider or a custom-built sport plane.
• Deans Connector with JST-XH Balance Connector — The main Deans T-Plug connector ensures secure, reliable power connections with minimal resistance, whilst the JST-XH balance connector allows for precise cell balancing during charging. This combination of connectors guarantees compatibility with a wide range of RC setups and provides the flexibility to match your existing model infrastructure effortlessly.
• Premium Silicone Leads with Gold-Plated Connectors — High-quality silicone leads featuring multi-strand construction improve power transfer efficiency and reduce electrical resistance. Gold-plated connectors provide secure, corrosion-resistant connections that maintain optimal power delivery over time, even after repeated charge cycles and extended use.
• Extended Battery Life and Low Self-Discharge — Designed to offer significantly more charge cycles than standard batteries, these Overlander Supersport Pro packs feature no memory effect and low self-discharge characteristics, minimising downtime between flights. This means you can store your battery for weeks and still find it ready to deliver peak performance when you need it.
• Protective Robust Design — The battery includes protective padding that shields against minor impacts and bumps, ensuring lasting performance and reliability even in challenging flying environments. This robust construction is built to withstand the rigours of regular sport flying and competitive use.

Technical Performance

The Overlander 3350mAh 7.4V 2S 35C Supersport Pro LiPo Battery represents the pinnacle of lithium polymer battery engineering for medium to large-scale RC applications. Built with Fullymax cells that deliver maximum capacity and reliability, this battery generates a maximum constant current of 117.25 amps and an impressive maximum burst current of 217.75 amps, providing the responsive power needed for aerobatic manoeuvres and high-performance flying. The 24.79 watt-hours of stored energy ensures extended flight times without the weight penalty of larger capacity packs. Construction utilises the advanced stacking method to maximise structural integrity and performance consistency, with each cell perfectly balanced in resistance and voltage to ensure uniform discharge characteristics. The 12AWG (4mm) wire gauge silicone leads provide excellent current handling capacity whilst maintaining flexibility for installation in tight battery bays. Whether you're pushing the boundaries with entry-level EDF jets, executing precision manoeuvres in sport gliders, or enjoying extended flights with large park flyers, this battery delivers the consistent, responsive power that separates enthusiast-grade equipment from basic RC setups. The precision engineering throughout ensures that this battery performs reliably flight after flight, making it an investment in long-term performance and satisfaction.

What's in the Box

• 1x Overlander 3350mAh 7.4V 2S 35C Supersport Pro LiPo Battery with Deans Connector
• JST-XH Balance Connector attached

What You Need to Complete

• Compatible LiPo charger (a balance charger is essential for safe, optimal charging)
• LiPo safety charge sack for safe charging and storage (highly recommended)
• RC model compatible with 7.4V 2S LiPo batteries and Deans connector

Frequently Asked Questions

• What does 2S mean, and why does it matter for my RC model? — The 2S designation refers to a 2-cell battery configuration, which delivers 7.4V of power (approximately 3.7V per cell). This voltage is crucial because not all RC models can handle the same voltage levels. Using the correct voltage ensures your motor, speed controller and electronics perform safely and efficiently. Always verify that your specific model is designed for 7.4V 2S operation before purchasing.
• What is the 35C rating, and how does it affect performance? — The C rating indicates your battery's power delivery capability. A 35C rating means the battery can safely discharge at 35 times its capacity per hour, generating 117.25 amps of continuous current. This rating is critical for high-performance models that demand quick bursts of power, such as aerobatic planes or sport gliders. The accompanying 65C burst rating provides temporary turbo power for intense manoeuvres, ensuring your battery never becomes the performance bottleneck in your setup.
• How long will this battery power my RC model? — Runtime depends on your specific model's power consumption, weight and flying style. The 3350mAh capacity represents a generous energy reserve that typically provides 15-30 minutes of flight time for large park flyers and sport gliders, though this can vary significantly based on your aircraft's efficiency and your flying intensity. Lighter, more efficient gliders may achieve longer flight times, whilst high-performance EDF jets typically consume power more quickly.
• Is this battery suitable for beginners? — Whilst this battery offers excellent performance, it is best suited to intermediate and advanced RC pilots who have experience with lithium polymer batteries. The 3350mAh capacity and 35C discharge rate are designed for models that demand consistent power, making it ideal for sport flying and aerobatic applications rather than gentle trainer aircraft. Beginners should ensure their RC model is specifically designed for 7.4V LiPo operation and that they understand proper charging, storage and safety procedures before using this battery.
• What makes this battery different from cheaper alternatives? — The Overlander Supersport Pro range distinguishes itself through meticulous cell matching, advanced testing processes and premium construction materials. Every battery is hand-matched for internal resistance, voltage and weight, ensuring consistency and reliability across all charge cycles. The ultrasonic welding of connections, multi-strand silicone leads and gold-plated connectors all contribute to superior performance and longevity compared to budget alternatives that may deliver quick failure or inconsistent power delivery.
• How should I charge this battery safely? — Always use a dedicated LiPo balance charger set to lithium polymer mode with the correct voltage setting for 2S batteries. Connect the battery's main Deans connector to the charger's main charging port, and attach the JST-XH balance connector to the charger's balance port. This dual connection allows the charger to monitor and balance each cell individually, ensuring optimal charge distribution and battery health. Never leave the battery unattended whilst charging, and consider using a LiPo safety charge sack as an additional precaution against potential fire hazards.
• What is the proper storage method for this battery? — Store your Overlander battery at approximately 50% charge (around 3.7V to 3.85V per cell) in a cool, dry location away from direct sunlight and heat sources. Avoid storing fully charged or completely drained batteries for extended periods, as this stresses the cells and can permanently reduce capacity. If you're storing the battery for more than a few weeks, check its charge every couple of months and top it up to the 50% storage level to maintain cell health and readiness for your next flying session.
• Can I use this battery with my existing RC model? — This battery is compatible with any RC model designed for 7.4V 2S LiPo operation featuring a Deans connector. Always verify that your model's motor, speed controller (ESC) and other electronics are rated for 7.4V before installation. Check your model's manual or manufacturer specifications to confirm compatibility, as using an incompatible voltage can damage electronics or create safety hazards.
• What is the maximum burst current, and why is it important? — The maximum burst current of 217.75 amps represents the peak power your battery can deliver for short periods during intense manoeuvres. This specification is essential for sport flying and aerobatic applications where you need explosive power for sudden climbs, tight turns or aggressive acceleration. The burst rating ensures your battery can handle these demanding moments without voltage sag or performance degradation.

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 Overlander 3350mAh 7.4V 2S 35C Supersport Pro LiPo Battery – Deans Connector (2569DEANS) 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.