Gens Ace 350mAh 7.4V 15C 2S LiPo Battery with JR Connector F3K Glider O-G2S0350-15JR

• Brand: Gens Ace
• Model Number: O-G2S0350-15JR
• SKU: GEA3502S15JR
• Battery Chemistry: Lithium Polymer (LiPo)
• Configuration: 2S1P (two cells in series, one parallel)
• Nominal Voltage: 7.4V
• Capacity: 350mAh
• Discharge Rating: 15C continuous
• Weight: 18 grams
• Dimensions: 44mm length x 19mm width x 12mm height
• Connector Type: JR (BEC/JST standard)
• Case Type: Soft case
• Internal Resistance: Low IR for stable voltage delivery
• Energy Density: Very high according to capacity-to-weight ratio
• Application: F3K/DLG Hand Launch Gliders
• Safety Certifications: ISO9001, ISO14001
• Warranty: 1 year manufacturer warranty
• Maximum Continuous Discharge Current: Approximately 5.25 amps (15C x 350mAh)
• Charge Rate: Recommended 1C (350mA)
• Minimum Storage Voltage: 3.0V per cell

Overview

The Gens Ace Li-Po Sport 2S 7.4V 350mAh 15C battery with JR connector is a premium lithium polymer power pack engineered specifically for weight-sensitive RC applications where space and balance are absolutely critical. Manufactured by Gens Ace, one of the world's top-ranking battery corporations with over 20 years of exquisite battery technology and a team of 200 professional engineers and technicians, this compact power solution delivers reliable, consistent performance for F3K and DLG hand-launch glider enthusiasts across the UK and beyond. If you're searching for a lightweight RC battery for gliders or other precision RC models, this is a battery that deserves serious consideration.

At just 18 grams and measuring a diminutive 44 x 19 x 12 millimetres, the Gens Ace 350mAh 7.4V battery fits into the tightest battery bays without compromising your aircraft's centre of gravity or performance characteristics. This is precisely engineered for RC modellers who demand the ultimate in weight efficiency without sacrificing power delivery or flight time. The 2S1P configuration provides a nominal voltage of 7.4V with a 350mAh capacity and a respectable 15C continuous discharge rating, making it ideal for hand-launch glider applications where lightweight power is essential. Whether you're competing in F3K events or enjoying casual DLG flying, this battery has been specifically adapted and optimised for these demanding applications.

Gens Ace maintains the traditional concept of excellent quality, optimisation and priority in both sales and services, which means you're getting a battery backed by genuine expertise and decades of manufacturing excellence. The brand fulfils both ISO9001 and ISO14001 standards, ensuring that every battery meets rigorous safety and environmental specifications. When you choose the Gens Ace 350mAh 7.4V 15C battery, you're choosing a product from a manufacturer that specialises in high-power lithium polymer batteries and delivers energy density that is specially adapted to each RC application type.

Key Features

• Ultralight 18-gram construction — Every gram matters in hand-launch glider applications, and this battery weighs just 18 grams, which is absolutely critical for maintaining proper weight distribution and maximising flight performance without adding unnecessary mass to your airframe.
• Compact 44 x 19 x 12mm dimensions — The diminutive physical footprint allows this battery to fit into the tightest battery bays and compartments, making it perfect for sleek, aerodynamic glider designs where space is at a premium.
• 2S1P LiPo configuration at 7.4V — Two cells in series deliver a nominal voltage of 7.4V with a single parallel arrangement, providing the voltage profile needed for efficient operation in lightweight RC glider systems.
• 350mAh capacity with practical energy delivery — The 350mAh capacity is perfectly matched to the demands of hand-launch gliders, providing sufficient energy for meaningful flight times whilst maintaining the lightweight characteristics essential for these applications.
• 15C continuous discharge rating — This discharge rate means the battery can safely deliver 5.25 amps of continuous current, providing snappy throttle response and reliable power delivery throughout your flying session.
• JR connector standard — The battery features a standard JR connector (also known as BEC/JST), which is the industry-standard connector type for most hand-launch gliders and lightweight RC models, ensuring compatibility with your equipment.
• Very high energy density relative to weight — Gens Ace has engineered this battery with very high energy density according to capacity-to-weight ratio, which means you get maximum power from minimum weight, a crucial advantage in glider applications.
• Low internal resistance (IR) — The low internal resistance characteristic provides stable voltage throughout your entire flight mission, ensuring consistent power delivery from launch to landing without the voltage sag that can compromise performance.
• Soft case protection — The battery is supplied in a protective soft case that shields it from damage during storage and transport whilst keeping weight to an absolute minimum.
• ISO9001 and ISO14001 certified manufacture — Every battery is manufactured to these stringent international standards, guaranteeing quality control, safety and environmental responsibility throughout the production process.
• One-year manufacturer warranty — Gens Ace backs this battery with a comprehensive one-year warranty, giving you peace of mind and demonstrating their confidence in product quality and longevity.

Technical Performance

The Gens Ace 350mAh 7.4V 15C battery represents the pinnacle of engineering for ultra-lightweight RC applications. With a voltage specification of 7.4V across a 2S1P cell arrangement, this battery delivers the nominal voltage required for efficient servo and receiver operation in hand-launch glider systems. The 15C discharge rating translates to a maximum continuous current draw of 5.25 amps, which is perfectly calibrated for the demands of F3K and DLG glider applications where power requirements are moderate but consistency is paramount. The 350mAh capacity provides meaningful flight durations without the weight penalty that would come from larger capacity packs. At just 18 grams, this battery maintains the exceptional energy density that Gens Ace is renowned for—the capacity-to-weight ratio is optimised specifically for this application category. The low internal resistance characteristic ensures that voltage remains stable throughout your mission, eliminating the brownouts or performance degradation that can occur with inferior batteries. The soft case construction provides essential protection against puncture and physical damage whilst contributing minimal additional weight. The JR connector interface is universal across most RC glider systems, ensuring seamless integration with your existing equipment. This is a battery engineered by specialists in high-power lithium polymer technology, delivering the reliability and performance characteristics that competitive glider pilots and serious hobbyists demand.

What's in the Box

• Gens Ace 350mAh 7.4V 2S1P LiPo battery pack with JR connector
• Protective soft case

Frequently Asked Questions

• Is the Gens Ace 350mAh 7.4V 15C battery suitable for my F3K hand-launch glider? — Yes, this battery has been specifically engineered for F3K and DLG hand-launch gliders. The combination of 350mAh capacity, 7.4V output, and 15C discharge rating makes it an ideal power source for these specialised applications. The ultralight 18-gram weight is particularly well-suited to glider applications where mass directly impacts performance.
• What is the actual flight time I can expect from this battery? — Flight time depends on your specific glider model, servo configuration, and usage patterns. The 350mAh capacity with a 15C discharge rating is designed to provide meaningful flight durations for hand-launch gliders, typically allowing for extended soaring sessions once your glider is airborne. Conservative usage of servos will maximise flight time.
• Can I use this battery in other RC models besides gliders? — Whilst this battery has been specifically adapted and optimised for F3K and DLG hand-launch gliders, the 7.4V voltage and JR connector make it potentially compatible with other lightweight RC models that accept 2S LiPo batteries. However, you should verify that your model's ESC and other components are rated for 7.4V operation before use.
• What does the 15C discharge rating mean in practical terms? — The 15C rating indicates the maximum safe continuous discharge rate, calculated as 15 times the battery capacity. For this 350mAh battery, that means a maximum safe continuous current draw of approximately 5.25 amps. This rating is perfectly adequate for the typical power requirements of hand-launch glider servos and receivers.
• Does this battery come with a charger? — No, the battery pack is sold without a charger. You will need a dedicated LiPo battery charger that supports 2S lithium polymer batteries. Many RC modellers already own compatible chargers, and these are readily available from RC retailers across the UK.
• How should I store this LiPo battery safely? — LiPo batteries should be stored in a cool, dry place at approximately 50% charge state when not in use for extended periods. Never store a fully charged LiPo battery for months at a time, and never allow the battery voltage to drop below 3.0V per cell. A LiPo storage bag or fireproof container is recommended for safety.
• What is the JR connector type and is it universal? — The JR connector is the industry-standard connector type for most RC receiver systems and is also commonly referred to as a BEC or JST connector. It is widely used across hand-launch gliders and other lightweight RC applications, making this battery highly compatible with most equipment.
• Is this battery waterproof? — The battery itself is not waterproof, though LiPo batteries are inherently more moisture-resistant than older NiMH technology. However, you should not deliberately expose this battery to water or submerse it. Keep the battery dry during storage and operation.
• What makes Gens Ace batteries different from competitors? — Gens Ace is a top-ranking battery corporation with over 20 years of specialised battery technology development and a team of 200 professional engineers. The brand manufactures across NIMH, LI-PO and LI-FE chemistries with unique technology that allows batteries to be stably discharged simultaneously. Their highest power output capability reaches 100C in other product lines, demonstrating exceptional engineering expertise. ISO9001 and ISO14001 certifications guarantee quality and environmental standards.
• Can I charge this battery with a standard RC charger? — Yes, provided your charger supports 2S LiPo charging profiles. Most modern RC battery chargers sold in the UK include LiPo charging modes. You should set your charger to 2S configuration and use the constant-current, constant-voltage (CC-CV) charging profile at a safe charge rate, typically 1C (350mA for this battery).
• What is the warranty coverage? — Gens Ace provides a comprehensive one-year manufacturer warranty with this battery. Special discounts are available for orders placed over one year after purchase. Contact the retailer or manufacturer for warranty claim details.

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 Sport 2S 7.4V 350mAh 15C with JR O-G2S0350-15JR 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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