Li-Po 3S 11.1V 4000mAh 30C Soaring with XT90 - O-G3S4000-30X9

Overview

The Gens Ace Soaring 3S 11.1V 4000mAh 30C LiPo battery with XT90 connector is a premium energy solution designed for RC enthusiasts who demand reliable, consistent power delivery for their electric-powered models. Whether you're piloting an RC car, boat, or helicopter, this 3-cell lithium polymer battery pack offers the performance specifications and engineering quality that serious RC hobbyists expect. Built by Gens Ace, a globally recognised manufacturer specialising in high-power LiPo batteries, this Soaring series pack combines exceptional energy density with proven reliability, making it an ideal choice for anyone looking to upgrade their RC setup or replace a worn battery.

This particular battery was specifically engineered for RC hydro racing applications, notably designed for use with the Graupner RC hydro racing boat SPACEBIRD model. The G-Tech variant incorporates Gens Ace's advanced battery technology, which has been specially adapted to deliver optimal performance across various RC applications including cars, boats, helicopters, and UAVs. The 4000mAh capacity provides substantial runtime whilst maintaining the compact dimensions and lightweight profile essential for high-performance RC vehicles. For RC enthusiasts in the UK seeking a dependable LiPo battery pack that combines performance with build quality, this Gens Ace offering represents excellent value and proven engineering heritage.

The XT90 connector ensures reliable electrical contact and secure connection to your RC equipment, whilst the soft case construction protects the battery during transport and storage. With a continuous discharge rate of 30C and burst capability of 60C, this battery is engineered to handle the demanding power requirements of modern electric RC vehicles. The low internal resistance (IR) technology ensures stable voltage delivery throughout your mission, meaning you'll experience consistent performance from the moment you power up until the battery is fully depleted.

Key Features

• 4000mAh Capacity — This substantial energy storage capacity delivers extended runtime for your RC vehicle, allowing longer sessions on the track, water, or in the air before requiring a recharge. The 4000mAh specification represents an excellent balance between weight and endurance.
• 3S 11.1V Configuration — The three-cell arrangement provides 11.1 volts nominal output, which is the standard voltage for many modern RC car, boat, and helicopter applications. This voltage is optimised for brushless motor systems and contemporary ESC (electronic speed controller) technology.
• 30C Continuous Discharge Rating — The 30C rating means this battery can safely deliver continuous discharge at 30 times its capacity (120 amps in this case), providing ample power for demanding acceleration and sustained high-speed operation without thermal stress or voltage sag.
• 60C Burst Discharge Capability — Beyond continuous discharge, the battery can handle burst discharge rates of 60C for short periods, giving you the extra power needed for rapid acceleration, climbing obstacles, or intense racing scenarios without damaging the battery cells.
• XT90 Connector — The XT90 connector is an industry-standard high-current connector that provides secure, reliable electrical contact. This connector type minimises connection resistance and reduces heat generation, ensuring efficient power transfer from battery to vehicle.
• Low Internal Resistance (IR) Technology — Gens Ace's advanced cell technology delivers low internal resistance, which means the battery maintains stable voltage output throughout the entire discharge cycle. You'll experience consistent power and performance until the battery is fully depleted, rather than experiencing gradual voltage drop.
• Lightweight Construction at 291g — Weighing approximately 291 grams, this battery provides excellent energy density relative to its mass. The lightweight design is crucial for RC vehicles where every gram affects acceleration, handling, and overall performance characteristics.
• Compact Dimensions (136 x 42.5 x 22.5mm) — The carefully engineered dimensions ensure the battery fits into battery trays and compartments of most RC vehicles, providing flexibility across multiple model types and platforms.
• G-Tech Advanced Technology — This battery incorporates Gens Ace's proprietary G-Tech advancement, which includes enhanced cell stability, improved discharge characteristics, and optimised energy density. The technology allows for stable, simultaneous discharge without the voltage irregularities found in standard LiPo packs.
• ISO9001 and ISO14001 Certified Manufacturing — Gens Ace and its manufacturing partners maintain strict quality control standards, ensuring every battery meets international standards for quality management and environmental responsibility. This certification provides peace of mind regarding safety and reliability.
• 1-Year Warranty — Gens Ace stands behind their product with a comprehensive 1-year warranty, protecting your investment against defects and manufacturing issues. Extended warranty options are available for batteries used beyond the first year.

Technical Performance

The Gens Ace Soaring 4000mAh battery represents the intersection of advanced lithium polymer cell chemistry and precision engineering. The 3S1P (three cells in series, one cell in parallel) configuration delivers the 11.1V nominal voltage that modern brushless RC systems require. The continuous discharge rating of 30C provides sustained power output of 120 amps, sufficient for competitive racing, aggressive bashing, and sustained high-speed operation. The burst discharge capacity of 60C (240 amps) handles the instantaneous power demands of rapid acceleration without triggering low-voltage cutoffs or voltage sag that would impair vehicle performance. The battery's internal resistance has been optimised through Gens Ace's proprietary cell selection and assembly process, ensuring voltage stability throughout the discharge cycle. This means your RC car, boat, or helicopter maintains consistent power and responsiveness whether you're at full charge or approaching the battery's end-of-life voltage threshold. The 291-gram weight and compact 136 x 42.5 x 22.5mm dimensions have been carefully engineered to fit standard RC vehicle battery compartments whilst maintaining optimal weight distribution. The XT90 connector specification ensures minimal connection resistance and reliable contact under the high-amperage demands of modern electric RC vehicles. Gens Ace's manufacturing process, certified to ISO9001 and ISO14001 standards, guarantees consistent cell quality and safety throughout production. The soft case construction provides physical protection during transport and storage, though users should always store batteries in dedicated LiPo safety bags and never leave charging batteries unattended.

What's in the Box

• Gens Ace Soaring 4000mAh 11.1V 30C 3S LiPo battery pack
• XT90 connector pre-installed
• Soft case protective covering

What You Need to Complete

• LiPo-compatible battery charger (not included — ensure your charger supports 3S LiPo packs)
• LiPo safety charging bag for safe storage and charging
• RC vehicle with XT90 compatible connector or an XT90 to your vehicle's connector adapter
• Balancing charger recommended for maintaining cell balance and extending battery life

Frequently Asked Questions

• Is the Gens Ace Soaring 3S LiPo suitable for RC car racing in the UK? — Yes, absolutely. This battery is engineered specifically for high-performance applications. The 30C continuous discharge and 60C burst ratings provide ample power for competitive RC car racing. The 4000mAh capacity offers sufficient runtime for multiple heats or long practice sessions. The low internal resistance ensures voltage stability during demanding acceleration and cornering manoeuvres typical of RC racing.
• What is the difference between 30C continuous and 60C burst discharge ratings? — The 30C continuous rating means the battery can safely deliver 120 amps (30 × 4000mAh) indefinitely without risk of damage. The 60C burst rating means it can handle 240 amps for short periods, providing the extra power needed for rapid acceleration or obstacle climbing. Most RC applications use burst power only briefly during intense manoeuvres.
• How long will this battery last during use? — Runtime depends entirely on your specific RC vehicle and driving style. A high-performance RC car drawing heavy current will deplete this 4000mAh battery faster than a less demanding application. Typically, expect 15-45 minutes of continuous operation depending on vehicle type and driving intensity. Multiple batteries are recommended for extended session enjoyment.
• Can I use this battery with my RC boat or helicopter? — Yes, this battery is designed for multi-application use. It was specifically engineered for RC hydro racing boats like the Graupner SPACEBIRD, and the 11.1V 3S configuration is also compatible with many RC helicopters and drones. Always verify your vehicle's battery connector matches the XT90 or obtain an appropriate adapter.
• What charger do I need for this 3S LiPo battery? — You'll need a dedicated LiPo battery charger that supports 3S (3-cell) packs. Modern RC-specific chargers almost universally support 3S packs. Balancing chargers are highly recommended as they charge each cell individually, maintaining equal voltage across all three cells and extending battery lifespan significantly.
• How should I store this battery safely? — LiPo batteries should always be stored in dedicated LiPo safety bags or metal containers. Store in a cool, dry location away from moisture and direct sunlight. The battery should be stored at 30-40% charge (approximately 3.8-3.85V per cell). Never store fully charged or fully depleted batteries for extended periods, as this stresses the cells and reduces lifespan.
• Is this battery waterproof for use in wet conditions? — Whilst the battery itself has no water resistance rating, the XT90 connector is designed for reliability. However, LiPo batteries should not be submerged or exposed to water directly. For RC boats, ensure the battery compartment is properly sealed and waterproofed separately from the battery itself.
• What makes Gens Ace batteries different from other brands? — Gens Ace specialises in high-power lithium polymer batteries with proprietary G-Tech technology that optimises cell chemistry and assembly for superior energy density and discharge stability. The ISO9001 and ISO14001 certifications ensure manufacturing quality. Gens Ace's specialists in high-power applications, with technology scaling up to 100C discharge capability across their product range.
• Can I use this battery in parallel with another identical battery for more power? — Yes, identical LiPo batteries can be connected in parallel to double the capacity and amperage capability. This requires specialist parallel charging boards and understanding of LiPo safety. This is an advanced technique and should only be attempted by experienced users.
• What is the typical lifespan of this battery? — A properly maintained LiPo battery typically provides 200-300 charge cycles before capacity degradation becomes noticeable. Storage conditions, charging practices, and discharge depth significantly affect lifespan. Proper storage (30-40% charge), avoiding over-discharge, and using quality chargers extend usable life considerably.

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 Li-Po 3S 11.1V 4000mAh 30C Soaring with XT90 - O-G3S4000-30X9 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.