GENSACE Li-Po G-Tech 3S 11.1V 4000mAh 30C Soaring with XT90 O-GT3S4000-30X9

• Brand: GENSACE (Gens Ace)
• Model Number: O-GT3S4000-30X9
• SKU: GEA403S30X9GT
• Barcode: 6928493309186
• Battery Chemistry: Lithium Polymer (LiPo)
• Series: G-Tech Soaring
• Configuration: 3S1P (three cells in series, one parallel)
• Nominal Voltage: 11.1V (3S)
• Capacity: 4000mAh
• Maximum Continuous Discharge Rate: 30C
• Maximum Burst Discharge Rate: 60C
• Continuous Discharge Current: 120A (at 30C)
• Burst Discharge Current: 240A (at 60C)
• Weight: 294 grams
• Dimensions: 136 x 42.5 x 22.5mm (Length x Width x Height)
• Connector Type: XT90
• Connector Features: Gold-plated contacts
• Case Type: Soft case
• Internal Resistance: Low IR technology for stable voltage delivery
• Energy Density: High, adapted for RC cars, boats and helicopters
• Application: Designed for Graupner RC hydro racing boat SPACEBIRD
• Compatibility: 3S LiPo-compatible ESCs and chargers with XT90 connector
• Manufacturing Standards: ISO 9001, ISO 14001 certified
• Warranty: One year manufacturer's warranty
• Simultaneous Discharge: Stable discharge capability when multiple batteries discharged simultaneously
• Voltage Stability: Maintains stable voltage until end of mission cycle

Overview

The GENSACE Li-Po G-Tech 3S 11.1V 4000mAh 30C Soaring battery with XT90 connector represents a reliable power solution for RC enthusiasts seeking consistent performance in a compact package. This 3S lithium polymer battery is engineered to deliver balanced capacity, weight and discharge performance, making it an excellent choice for RC car, boat and helicopter applications across the UK. Whether you're an experienced RC competitor or exploring the world of electric-powered RC models for the first time, this battery pack offers the dependable energy you need for extended runtime and responsive performance.

Designed specifically with the Graupner RC hydro racing boat SPACEBIRD in mind, the G-Tech Soaring 4000mAh battery combines proven Gens Ace technology with modern energy density optimisation. Gens Ace has established itself as a leader in high-performance lithium polymer batteries, and this G-Tech Soaring series exemplifies their commitment to quality and reliability. The battery features a soft case design and XT90 connector, which are industry-standard connections that ensure compatibility with a wide range of RC equipment available throughout the UK hobby market.

What sets this battery apart is its exceptional voltage stability throughout the discharge cycle, thanks to Gens Ace's low internal resistance (IR) technology. This means your RC model will maintain consistent power delivery from the moment you start your mission until the battery reaches depletion, resulting in more predictable handling and performance. The 4000mAh capacity strikes an ideal balance between weight and runtime, ensuring your RC model remains nimble whilst providing sufficient energy for extended play sessions.

Key Features

• 11.1V 3S LiPo Configuration — This three-cell lithium polymer pack delivers the 11.1-volt nominal voltage standard for most modern RC applications including electric RC cars, boats and helicopters available to UK buyers. The 3S configuration is the most popular voltage specification in the RC hobby, offering excellent performance balance without excessive weight.
• 4000mAh Capacity — The 4000 milliamp-hour capacity provides substantial runtime for RC models whilst maintaining a manageable weight of just 294 grams. This capacity level is ideal for recreational flying, boating and driving sessions lasting twenty to thirty minutes depending on your specific application and throttle usage patterns.
• 30C Continuous Discharge Rating — The 30C maximum continuous discharge capability means this battery can safely deliver 120 amps of current continuously, sufficient for most electric RC vehicles, boats and aircraft. This rating ensures the battery can handle the demands of spirited driving or racing without overheating or voltage sag that would compromise performance.
• 60C Burst Discharge Capability — For peak acceleration and aggressive manoeuvres, the battery supports burst discharge at 60C, allowing momentary current draws of up to 240 amps. This feature is particularly valuable for RC racing applications or when you need instant throttle response during competitive events.
• XT90 Connector — The XT90 connector is a gold-plated, high-current connector standard throughout the RC hobby, ensuring safe electrical connections and minimal voltage loss. This connector type is widely supported by ESCs (electronic speed controllers) and chargers sold throughout UK RC hobby shops, simplifying integration with your existing equipment.
• Low Internal Resistance Technology — Gens Ace's proprietary low IR technology provides stable voltage delivery until the end of your mission. Rather than experiencing gradual performance degradation as the battery depletes, you'll enjoy consistent throttle response and power output throughout the discharge cycle.
• Compact Dimensions — At 136 x 42.5 x 22.5 millimetres, this battery pack fits within the battery compartments of most standard RC vehicles, boats and helicopters. The compact profile ensures balanced weight distribution and doesn't require modifications to your RC model's chassis or frame.
• Soft Case Design — The protective soft case safeguards the lithium polymer cells from physical damage during transport and storage whilst remaining flexible enough to fit snugly in battery compartments. The case includes clear cell identification to help you monitor individual cell voltages during maintenance.
• High Energy Density — This battery achieves exceptional energy density adapted specifically for RC vehicle types including cars, boats and helicopters. Gens Ace specialises in high-power lithium polymer batteries, with their unique technology delivering maximum power output whilst maintaining safety and stability throughout the discharge cycle.
• Simultaneous Discharge Capability — Gens Ace technology enables stable discharge performance when multiple batteries are discharged simultaneously, a feature valued by RC competitors running multiple vehicles or those with high-demand applications.
• ISO Certified Manufacturing — Gens Ace and its manufacturing partners fulfil ISO 9001 and ISO 14001 standards, guaranteeing consistent quality control and environmentally responsible production practices. Your battery is manufactured to the highest international standards for safety and reliability.
• One Year Warranty — Every GENSACE G-Tech battery includes a comprehensive one-year manufacturer's warranty, providing peace of mind that your investment is protected against manufacturing defects.

Technical Performance

The GENSACE G-Tech 3S 11.1V 4000mAh 30C battery delivers impressive technical performance across multiple RC disciplines. With a continuous discharge rating of 30C, this pack can safely supply 120 amps of current, making it suitable for brushless motors ranging from approximately 2000KV to 4000KV depending on your motor selection and gearing. The burst discharge capability of 60C provides momentary current delivery of 240 amps, enabling rapid acceleration and dynamic throttle response during competitive racing or aggressive recreational driving. The battery's weight of 294 grams represents an excellent power-to-weight ratio, ensuring your RC model remains agile whilst benefiting from extended runtime. Constructed using premium lithium polymer cell technology, this 3S1P (three cells in series, one cell in parallel) configuration maintains voltage stability throughout the discharge cycle thanks to Gens Ace's low internal resistance engineering. The XT90 connector features gold-plated contacts that minimise voltage loss and ensure reliable electrical connections under high-current conditions. The physical dimensions of 136mm length, 42.5mm width and 22.5mm height allow this battery to fit standard RC vehicle battery trays without requiring chassis modifications. The soft case provides thermal protection and physical impact resistance, extending battery lifespan and ensuring safe operation. Whether powering RC cars, electric boats or helicopters, this battery maintains the voltage stability and current delivery consistency that separates quality Gens Ace products from budget alternatives available throughout the UK RC market.

What's in the Box

• GENSACE G-Tech Soaring 4000mAh 11.1V 30C 3S LiPo Battery Pack with XT90 connector
• Soft protective carrying case

What You Need to Complete

• LiPo-compatible charger (supports 3S charging) — we recommend multi-chemistry chargers that feature balance charging capability
• RC vehicle, boat or helicopter equipped with XT90-compatible ESC (electronic speed controller)
• Appropriate discharge cable if your application requires disconnection from the XT90 connector
• LiPo battery checker for monitoring individual cell voltages

Frequently Asked Questions

• Is the GENSACE G-Tech 3S 4000mAh battery suitable for beginner RC enthusiasts? — Yes, this battery is suitable for RC beginners with proper handling and charging procedures. The 3S voltage and 4000mAh capacity are standard specifications used across entry-level and mid-range RC cars, boats and helicopters throughout the UK. However, beginners must learn proper lithium polymer battery safety, including never leaving the battery unattended whilst charging, storing the battery in a safe location away from flammable materials, and regularly checking cell voltages. We recommend consulting the manual for your specific RC model to confirm compatibility before purchasing.
• What RC models is this battery compatible with? — The GENSACE G-Tech Soaring 4000mAh battery is specifically designed for the Graupner RC hydro racing boat SPACEBIRD model. However, the 3S 11.1V voltage and XT90 connector make it compatible with any RC vehicle, boat or helicopter equipped with a 3S-compatible ESC and XT90-compatible connector. Verify your model's battery requirements before purchasing to ensure proper fit and voltage compatibility.
• How long will this battery last on a single charge? — Runtime depends on several variables including throttle usage, motor power, gearing and your specific RC model's efficiency. Generally, a 4000mAh battery will provide 15 to 30 minutes of runtime for typical recreational use. Racing applications or high-throttle driving will reduce runtime significantly, whilst light flying or casual boating may extend runtime beyond 30 minutes. We recommend purchasing a second battery to maximise your play sessions.
• What charger do I need for this battery? — The GENSACE G-Tech battery requires a LiPo-compatible charger that supports 3S charging (11.1V nominal). We strongly recommend using a charger with balance charging capability, which charges each individual cell to the correct voltage and maximises battery lifespan. Multi-chemistry chargers available at RC Model Shop support 3S LiPo charging alongside NiMH, NiCd and other battery types, offering flexibility if you own multiple RC models.
• How does this battery compare to older GENSACE Soaring models? — This G-Tech Soaring version represents an evolution of the previous Gens Ace Soaring 4000mAh 11.1V 30C 3S1P battery (model GEA40003S30X9). The G-Tech designation indicates optimised energy density, improved low internal resistance technology and enhanced thermal stability. The G-Tech version maintains the same 30C continuous and 60C burst discharge ratings whilst providing more consistent voltage delivery throughout the discharge cycle.
• Can I use this battery for racing? — Yes, the 30C continuous and 60C burst discharge ratings make this battery suitable for RC car racing, RC boat racing and other competitive applications. However, verify that your ESC can handle continuous 30C discharge and that your motor is rated for 3S voltage before racing competitively. Some racing series have specific battery regulations, so check your local or national racing governing body's rules.
• How should I store this battery? — Store the GENSACE G-Tech battery in a cool, dry location away from direct sunlight, moisture and extreme temperatures. The ideal storage voltage for long-term lithium polymer storage is approximately 3.85 volts per cell (approximately 11.55V for a 3S pack). If storing for extended periods longer than one month, charge or discharge the battery to storage voltage to maintain cell health. Always store the battery in a fire-resistant container or LiPo storage bag away from flammable materials.
• Is this battery waterproof? — The GENSACE G-Tech battery itself is not waterproof, though the XT90 connector is sealed against moisture. For aquatic RC applications including boats, ensure the battery is secured in a waterproof compartment within your RC vessel, and never allow water to enter the connector contacts. After boating, inspect the battery and connector for moisture and allow the battery to dry completely before charging or storing.

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 GENSACE Li-Po G-Tech 3S 11.1V 4000mAh 30C Soaring with XT90 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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