O-GT2S4000-30X9

• Product Type: LiPo Battery Pack
• Brand: Gens Ace
• Model: G-Tech Soaring
• Part Number: O-GT2S4000-30X9
• SKU: GEA402S30X9GT
• Configuration: 2S1P
• Capacity: 4000mAh
• Voltage: 7.4V (2 cells in series)
• Max Continuous Discharge Rate: 30C
• Max Burst Discharge Rate: 60C
• Recommended Charge Rate: 1-3C
• Weight: Approximately 208 grams
• Length: Approximately 133mm
• Width: Approximately 41.5mm
• Height: Approximately 15.5mm
• Connector: XT90
• Case Type: Soft Case
• Battery Chemistry: Lithium Polymer (LiPo)
• Cell Type: 2S1P Stacking Technology Configuration
• Internal Resistance: Low IR (Low Internal Resistance)
• Energy Density: Very High
• Suitable for: 1:10 RC model cars including Traxxas Slash 4x4, TEAM XRAY 1/10 electric touring cars, Yokomo YZ-4 1/10 electric 4WD buggy
• Safety Certification: ISO9001 and ISO14001 compliant
• Warranty: 1 year standard warranty

Overview

The Gens Ace G-Tech 2S 7.4V 4000mAh 30C LiPo battery with XT90 connector is a premium energy solution designed for RC enthusiasts who demand reliable, consistent power delivery across a wide range of applications. Whether you're a dedicated RC car UK hobbyist, a competitive racer, or simply exploring the world of remote control models, this 2S LiPo pack delivers the performance and dependability you need to keep your models running at their best. Built using Gens Ace's renowned stacking technology, this battery pack represents the perfect balance of capacity, discharge performance, and energy density in a compact, lightweight format that suits 1:10 scale RC models perfectly.

This professional-grade LiPo battery combines cutting-edge cell stacking technology with robust construction to provide smooth, responsive power delivery run after run. The 4000mAh capacity ensures impressive runtime, whilst the 30C continuous discharge rating guarantees strong, consistent output that won't let you down during intense driving sessions or competitive racing. The XT90 connector provides secure, low-resistance connections that minimise voltage sag and energy loss, ensuring your RC model receives maximum power efficiency. Gens Ace has engineered this battery to deliver high energy density without compromise, meaning you get more power in a lighter package—a significant advantage whether you're basking on the weekend or chasing lap times on the track.

Ideal for 1:10 RC model cars including popular platforms like Traxxas Slash 4x4, TEAM XRAY high-tech touring cars, and Yokomo 4WD buggies, this G-Tech battery is engineered to deliver professional-grade performance in a ready-to-use package. The soft case construction protects your investment whilst remaining flexible enough to fit securely into most RC chassis battery compartments. With ISO9001 and ISO14001 certification from Gens Ace and its manufacturing partners, you can trust in the safety, reliability, and environmental responsibility of your power source.

Key Features

• 4000mAh High-Capacity 2S Configuration — The 7.4V 2S1P format provides the ideal voltage for 1:10 scale RC cars, delivering extended runtime whilst maintaining optimal performance characteristics for electric touring cars, buggies, and racing models.
• 30C Continuous Discharge Rating — This robust discharge rating ensures powerful, consistent current delivery throughout your driving session, with a 60C burst discharge capability for extreme acceleration and demanding conditions that require maximum instantaneous power.
• Gens Ace Stacking Technology — Remarkable cell stacking innovation enables the achievement of single cell capacities of 4000mAh, resulting in dependable capacity consistency and superior energy density compared to conventional battery construction methods.
• XT90 Connector — The secure XT90 connector system minimises connection resistance and voltage loss, ensuring stable power delivery from the first second of your run until the battery reaches safe depletion levels, with virtually no performance degradation.
• Lightweight at 208g — The compact 133 x 41.5 x 15.5mm dimensions and relatively light weight provide excellent weight distribution and low centre of gravity benefits for RC cars, improving handling and overall chassis dynamics.
• High Energy Density Design — Specially adapted cell chemistry and construction techniques maximise power output relative to battery weight, giving you the benefits of extended runtime without the penalty of excessive mass that would affect vehicle balance.
• Low Internal Resistance — The battery maintains stable voltage delivery throughout your entire mission, preventing the voltage sag that can rob your RC model of responsiveness and top speed as the battery discharges.
• Soft Case Construction — Durable, flexible soft case protection guards against mechanical damage whilst remaining light and flexible enough to fit securely into standard RC car battery compartments without modification.
• 1-3C Recommended Charge Rate — Safe, user-friendly charging specifications mean you can recharge your battery quickly using standard RC chargers without risk of cell damage or reduced lifespan, supporting charge times as fast as 20 minutes on 3C chargers.

Technical Performance

The Gens Ace G-Tech 2S 7.4V 4000mAh 30C LiPo battery represents a significant advancement in RC power technology, combining high-performance discharge characteristics with exceptional build quality and engineering precision. At 208 grams, this battery pack delivers powerful 120-amp continuous discharge capacity (4000mAh × 30C) and an impressive 240-amp burst capability, making it more than capable of powering demanding 1:10 scale electric RC cars with brushless motors and high-performance ESCs. The 7.4V 2S configuration is the industry standard for 1:10 electric touring cars, buggies, and stadium trucks, providing the perfect balance between voltage, capacity, and weight distribution for optimal vehicle performance. The stacking cell technology employed by Gens Ace ensures consistent voltage delivery and reliable performance across the full discharge cycle, eliminating the weak spots and inconsistencies found in lower-quality battery packs. The XT90 connector standard is widely recognised across the RC hobby and provides substantially lower internal resistance compared to older T-style connectors, resulting in measurably improved power delivery and reduced heat generation during high-current discharge. Built to ISO9001 and ISO14001 standards, every aspect of this battery—from cell selection to assembly and quality control—meets professional manufacturing specifications. The low internal resistance (Low IR) technology maintains stable voltage output until the battery reaches safe depletion thresholds, ensuring predictable handling characteristics throughout your entire run. Whether you're preparing for competitive racing, weekend bashing sessions, or exploring RC car UK hobby activities, this battery delivers the consistent, reliable power that separates quality equipment from budget alternatives.

What's in the Box

• Gens Ace G-Tech 2S 7.4V 4000mAh 30C LiPo Battery Pack with XT90 connector
• 1 x Battery (2S1P configuration)

Frequently Asked Questions

• Is the Gens Ace G-Tech 2S 4000mAh 30C LiPo battery suitable for RC car beginners? — Yes, absolutely. This battery is an excellent choice for beginners and intermediate RC enthusiasts alike. The 2S voltage is the industry standard for 1:10 scale RC cars, meaning most entry-level and mid-range electric RC models are designed around this power specification. The 30C discharge rating provides plenty of power for normal driving without being excessively demanding on charging infrastructure or requiring specialist equipment. The recommended 1-3C charge rate means you can safely recharge using standard hobby-grade chargers, and the XT90 connector is now the most common standard on modern RC cars.
• What 1:10 RC car models are compatible with this battery? — The Gens Ace G-Tech 2S battery suits all 1:10 scale RC model cars designed for 2S LiPo power. Specifically recommended applications include Traxxas Slash 4x4 platform vehicles, TEAM XRAY high-tech luxury 1/10 electric touring cars, and Yokomo YZ-4 1/10 scale electric 4WD buggies. Most modern 1:10 brushless RC cars will be compatible provided they feature XT90 or compatible connectors and are rated for 2S LiPo power. Older models with Traxxas Connector (iD), EC3, or other legacy connectors will require an adapter.
• How long does the Gens Ace G-Tech 4000mAh battery take to charge? — Charge time depends on your charger's C-rating capability. Following the manufacturer's recommended 1-3C charge rate guidance: at 1C rate, the battery charges in approximately one hour; at 2C rate, approximately 30 minutes; at 3C rate, approximately 20 minutes. Most modern RC chargers support 3C charging for 4000mAh packs, making this a practical choice for club racing or multiple-battery sessions. Always use a quality LiPo charger with balancing capability to ensure cell longevity and safety.
• What makes the XT90 connector better than alternatives? — The XT90 connector significantly reduces internal resistance compared to older T-style, EC3, or Tamiya connectors, which directly translates to less voltage sag during high-current discharge. This means your RC model maintains more responsive throttle control and higher top speed throughout the discharge cycle. The secure connection design and robust gold-plated contacts minimise oxidation and contact resistance over time, ensuring consistent performance across hundreds of charging cycles. XT90 connectors have become the industry standard on quality RC equipment precisely because of these performance advantages.
• How does Gens Ace stacking technology improve battery performance? — Gens Ace's proprietary stacking technology enables the manufacturing of single cells with capacities of 4000mAh, which is higher than achievable with conventional cell construction methods. This results in a 2S1P pack (two cells in series, one cell in parallel) that delivers superior energy density and consistent voltage characteristics throughout the discharge cycle. The stacking approach ensures more uniform internal resistance across both cells, which is critical for voltage balance and overall pack reliability during high-current discharge. The result is measurably better voltage stability and more predictable performance compared to battery packs assembled using conventional cell technology.
• Is this battery suitable for competitive RC racing? — Yes, the Gens Ace G-Tech 30C rating makes this an excellent choice for competitive 1:10 electric touring car racing and other organised RC racing categories. The 60C burst discharge capability ensures sufficient power for aggressive acceleration and high-speed cornering. The low internal resistance and stable voltage characteristics maintain consistent handling throughout your race run. However, for high-performance racing applications requiring absolute maximum power or featuring extreme environmental conditions, you might also consider Gens Ace's higher-rating 50C or 60C models if your vehicle and ESC support them. The G-Tech 30C model represents an excellent balance of performance, reliability, and value for competitive use.
• What is the weight advantage of this compact 2S pack? — At 208 grams, this battery is significantly lighter than equivalent capacity 3S packs (which would weigh considerably more), contributing to improved vehicle weight distribution and lower centre of gravity. In RC cars, battery weight distribution is critical to handling balance. The compact 133 x 41.5 x 15.5mm dimensions allow flexible battery mounting positions within your chassis, enabling you to fine-tune weight distribution to match track conditions and driving style.
• How should I store this LiPo battery when not in use? — LiPo batteries should be stored in a cool, dry environment at approximately 3.85V per cell (7.7V for 2S packs). Most quality chargers feature a storage charge mode that automatically brings your battery to this safe voltage level. Never leave LiPo batteries fully charged or completely discharged for extended periods. Store batteries in a LiPo bag or fireproof container away from flammable materials. This storage practice preserves battery lifespan and maintains safety. Gens Ace batteries, built to ISO9001 standards, respond particularly well to proper storage maintenance, often maintaining usable capacity after years of correct storage.

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 2S 7.4V 4000mAh 30C with XT90 O-GT2S4000-30X9 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.

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