Gens Ace 2S 7.4V 400mAh 35C LiPo Battery with JST for Axial SCX24

• Brand: Gens Ace
• Model Number: O-GC2S400-35JST
• Product Type: LiPo Battery Pack - Bashing Series
• Capacity: 400mAh
• Voltage: 7.4V nominal (2S1P configuration)
• Continuous Discharge Rate: 35C
• Weight: 18g
• Dimensions: 42mm length x 19mm width x 12mm height
• Balance Plug: JST-XHR-3P
• Discharge Plug: JST-PHR-2P
• Recommended Charge Rate: 1–3C (0.4–1.2 amps)
• Maximum Continuous Discharge Current: 14 amps (400mAh x 35C)
• Compatibility: Axial SCX24 1:24 RC Car, all 2S LiPo-compatible RC vehicles
• Series/Parallel Configuration: 2S1P (two cells in series, one cell parallel)
• Barcode: 6928493302828

Overview

The Gens Ace 2S 7.4V 400mAh 35C LiPo battery with JST connectors is a purpose-built power solution designed specifically for the Axial SCX24 1:24 scale RC crawler. This compact battery pack is part of Gens Ace's Bashing Series, a comprehensive range of batteries engineered for everyday running, practice and recreational fun. Whether you are new to the RC hobby or an experienced enthusiast looking for a reliable spare battery, this 400mAh LiPo delivers the performance characteristics needed to keep your SCX24 running smoothly throughout a full day of bashing and exploration.

The Gens Ace Li-Po 2S battery represents an excellent choice for RC car UK enthusiasts who demand reliability without complications. Designed with beginners and casual drivers in mind, the Bashing Series offers straightforward performance and robust construction suitable for start-up hobbyists and daily practice sessions. If you are discovering the world of RC for the first time or looking to expand your battery collection for extended running sessions, this 400mAh pack offers the ideal combination of capacity, discharge rate and compact form factor that makes it perfect for small-scale RC applications.

What sets this battery apart is its thoughtful engineering specifically tailored to the SCX24's power requirements. The 7.4V nominal voltage provides optimal performance in 1:24 scale crawlers, whilst the 35C continuous discharge rate ensures responsive acceleration and consistent power delivery. At just 18 grams, this lightweight pack sits comfortably within the SCX24's weight budget, helping maintain the precise balance and handling characteristics essential for successful rock crawling and technical terrain negotiation.

Key Features

• 2S1P Configuration (7.4V Nominal) — The two-cell series arrangement delivers 7.4 volts of nominal power, precisely calibrated for the Axial SCX24 and other small-scale 2S-compatible RC cars, ensuring optimal motor performance and runtime without over-stressing the electronic components.
• 400mAh Capacity — This moderate capacity provides practical running time for casual bashing and practice sessions while maintaining the compact size essential for fitting within the confined battery compartments of 1:24 scale crawlers.
• 35C Continuous Discharge Rate — The solid 35C rating allows the battery to deliver substantial current to your SCX24's motor and steering servo, providing responsive acceleration and immediate directional control when navigating challenging terrain.
• JST-PHR-2P Discharge Connector — This standardised discharge connector ensures clean, secure connections to your SCX24's receiver and electronic speed controller, minimising voltage drop and maintaining reliable power delivery throughout your driving session.
• JST-XHR-3P Balance Lead — The dedicated three-pin balance connector enables safe and effective charging using any modern LiPo balance charger, protecting cell integrity and extending overall battery lifespan through proper voltage management.
• Compact Dimensions (42 x 19 x 12mm) — The purposefully engineered form factor fits neatly into small battery bays without modification, maintaining the SCX24's original proportions and ensuring proper weight distribution for predictable handling characteristics.
• Ultra-Lightweight Design (18g) — At just 18 grams, this battery adds minimal weight to your crawler, preserving the delicate balance and centre of gravity that small-scale RC vehicles depend upon for authentic trail performance and precise weight transfer during climbing manoeuvres.
• Bashing Series Build Quality — Gens Ace's Bashing Series represents a fundamental level of reliable performance, constructed to withstand the demands of repeated daily use, practice sessions and recreational bashing without requiring constant maintenance or specialist care.
• 1–3C Recommended Charge Rate — The conservative charge rate guidance (0.4–1.2 amps for this 400mAh pack) ensures safe, controlled charging that maximises battery lifespan and prevents thermal stress, making it ideal for home charging setups and club environments.

Technical Performance

The Gens Ace 2S 7.4V 400mAh 35C LiPo represents solid engineering within the budget-conscious segment of RC batteries. This 2S1P lithium polymer pack has been engineered using proven manufacturing techniques that balance performance, longevity and safety. The 35C continuous discharge capability means the battery can sustain 14 amps of current draw (35 multiplied by 0.4 amp-hours), providing ample headroom for the small brushless or brushed motors typically fitted to 1:24 scale crawlers. The 7.4V nominal voltage, which settles at approximately 8.4V when fully charged, represents the sweet spot for small-scale RC car UK applications, delivering sufficient voltage for responsive motor performance without creating excessive heat or accelerating wear on motor windings and bearings.

At 18 grams, this battery pack exemplifies the lightweight construction essential for maintaining the precise weight distribution that allows small-scale rock crawlers to climb vertical obstacles and navigate technical terrain. The balanced cell arrangement ensures both cells age and discharge evenly, extending overall pack lifespan and maintaining predictable voltage sag characteristics throughout your driving session. The combination of JST-PHR-2P discharge connector and JST-XHR-3P balance lead integrates seamlessly with aftermarket Gens Ace chargers and most universal LiPo chargers available in the UK, providing hassle-free charging without requiring proprietary equipment or adapter cables.

What's in the Box

• Gens Ace 2S 7.4V 400mAh 35C LiPo Battery Pack
• Integrated JST-PHR-2P discharge connector
• JST-XHR-3P balance lead

What You Need to Complete

• LiPo-compatible balance charger capable of handling 2S packs (available separately)
• Axial SCX24 1:24 RC crawler or compatible 2S-rated RC car
• Charger power supply (mains or vehicle cigarette lighter adapter)
• Optional: Battery storage bag for safe transport and storage

Frequently Asked Questions

• Is the Gens Ace 400mAh 2S battery suitable for beginners and casual RC enthusiasts? — Absolutely. The Bashing Series is specifically designed for start-up hobbyists and daily practice, making it an excellent choice for anyone new to RC or looking to develop their driving skills without the complexity of high-performance racing batteries. The straightforward charging requirements and durable construction mean you can focus on enjoying your RC experience rather than worrying about technical battery management.
• What is the actual runtime I can expect from this 400mAh pack? — Runtime varies depending on your driving style, motor choice and terrain conditions, but realistically you should expect 10-20 minutes of mixed running per charge on a stock SCX24 setup. For extended sessions, many enthusiasts purchase multiple batteries to rotate through, which is why Gens Ace offers this pack as part of an accessible pricing strategy for casual RC car UK users.
• How does the 35C discharge rate affect performance? — The 35C rating means this battery can safely deliver 14 amps of continuous current, which is more than sufficient for small-scale crawlers with modest motor and servo power requirements. This healthy discharge rate ensures you get responsive acceleration and immediate steering response without voltage sag that would cause sluggish performance in technical terrain.
• Can I use this battery with other RC cars besides the SCX24? — The 2S 7.4V configuration makes it compatible with any small-scale RC car, crawler or quad that accepts 2S LiPo batteries. However, the 400mAh capacity and compact 42 x 19 x 12mm dimensions are specifically engineered for the Axial SCX24. Larger vehicles may require higher-capacity packs for acceptable runtime, so always verify your vehicle's power requirements before purchasing.
• What charging equipment do I need to charge this battery safely? — You will need a dedicated LiPo balance charger that supports 2S packs and features a balance port compatible with JST-XHR-3P connectors. The recommended 1–3C charge rate means you should charge at no more than 1.2 amps maximum (ideally 0.4–0.8 amps for conservative charging). Many modern hobby chargers sold in the UK support these specifications at affordable prices.
• How long will this battery last before it needs replacing? — With proper care, a LiPo battery typically lasts 100-300 charge cycles. Storage at 40-60% state of charge and avoiding complete discharge extends lifespan significantly. The Gens Ace Bashing Series is manufactured to withstand regular hobby use, so with sensible maintenance you should see reliable performance for several months of casual use.
• Why choose the JST connector version instead of other connector types? — The JST-PHR-2P discharge connector has become the de facto standard in small-scale RC applications, with excellent compatibility across aftermarket receivers and electronic speed controllers. This standardisation means you have flexibility to upgrade other components without facing connector compatibility issues that could limit your upgrade options.
• Is this battery waterproof for wet terrain running? — Lithium polymer batteries are inherently sensitive to moisture. Whilst the battery pack itself has no specific waterproof rating, the JST connectors provide reasonable splash protection. For wet terrain running, ensure your SCX24's receiver and ESC have waterproof electronics, and inspect the battery after wet running to confirm no moisture has entered the pack or connectors. Allow the battery to dry completely before charging.

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 Car 2S 7.4V 400mAh 35C with JST (SCX24) O-GC2S400-35JST 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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