GENSACE Li-Po Sport 2S 7.4V 300mAh 20C Battery Pack JR Connector O-G2S0300-20JR

• Brand: GENSACE (Gens Ace)
• Model number: O-G2S0300-20JR
• Barcode: 6928493316733
• Battery chemistry: Lithium Polymer (LiPo)
• Configuration: 2S1P (2 cells in series, 1 in parallel)
• Nominal voltage: 7.4V
• Maximum charge voltage: 8.4V
• Capacity: 300mAh
• Continuous discharge rate: 20C
• Maximum continuous discharge current: 6 amps
• Connector type: JR lead (pre-soldered)
• Case type: Soft case
• Weight: 17g
• Length: 45mm
• Width: 16mm
• Height: 13mm
• Footprint dimensions: 45 x 16 x 13mm
• Recommended applications: F3K hand-launch gliders, DLG (Dynamic Soaring) gliders
• Suitable for lightweight RC aircraft requiring 2S LiPo power

Overview

The GENSACE Li-Po Sport 2S 7.4V 300mAh 20C with JR connector is a precision-engineered lightweight battery pack designed for competitive RC flying applications. This compact 2S1P LiPo battery represents the pinnacle of energy storage technology for hand-launch gliders and lightweight RC aircraft. With its diminutive footprint of just 45 x 16 x 13mm and featherweight at only 17g, this battery is purpose-built for pilots who demand minimal mass combined with reliable power delivery. Whether you're an experienced RC enthusiast shopping for RC batteries UK or exploring specialist power solutions for F3K and DLG hand-launch gliders, the GENSACE Li-Po Sport pack delivers the performance and form factor that serious pilots expect.

GENSACE (Gens Ace) stands as one of the top-ranked battery corporations globally, backed by two decades of exquisite battery technology development and the expertise of 200 professional engineers and technicians. The company has invested deeply in research and manufacturing across multiple battery chemistries including NiMH, Li-Po, and Li-Fe systems. This heritage of excellence is evident in every aspect of the Li-Po Sport 2S 7.4V 300mAh 20C pack, which combines proven reliability with the lightweight characteristics essential for hand-launch glider competition.

The 20C discharge rate ensures responsive power delivery when you need it most, whilst the soft case design protects your investment without adding unnecessary bulk. This is the battery of choice for F3K/DLG hand-launch gliders, where space is at a premium and every gram matters. The JR lead connector provides industry-standard compatibility with most modern RC flight equipment, making integration into your existing setup straightforward and hassle-free.

Key Features

• Compact dimensions (45 x 16 x 13mm) — The incredibly small footprint allows this battery to fit into slender airframes where conventional larger packs simply cannot fit, making it essential for anyone building lightweight hand-launch gliders or space-critical RC aircraft designs.
• Ultra-lightweight at just 17g — Every gram counts in competitive RC flying, and this featherweight pack minimises mass whilst maintaining adequate energy capacity, directly improving climb rate and flight duration for gliders and light aircraft.
• 2S1P LiPo chemistry — The two-cell configuration delivers 7.4V nominal voltage, the standard power requirement for F3K and DLG hand-launch gliders, providing the electrical characteristics these specialised aircraft demand for optimal performance.
• 20C discharge rate — This respectable discharge capability ensures the battery can deliver sufficient current under load without excessive voltage sag, maintaining consistent power delivery throughout your flight session even during demanding manoeuvres.
• JR connector lead — The standard JR connector ensures broad compatibility across the majority of modern RC flight systems, chargers and receivers, eliminating the need for adapter cables and simplifying setup.
• 300mAh capacity — This capacity represents an optimal balance between energy density and weight for F3K and DLG applications, providing adequate flight time without the mass penalty of larger capacity packs.
• Soft case protection — The flexible case design safeguards cell integrity during transport and storage whilst keeping additional weight to an absolute minimum, contrasting with heavier rigid cases that would compromise the lightweight philosophy.
• Proven GENSACE reliability — Built to the same exacting standards that have made GENSACE a trusted brand among professional battery users worldwide, you can rely on consistent performance session after session.

Technical Performance

The GENSACE Li-Po Sport 2S 7.4V 300mAh 20C battery represents a masterclass in optimised energy storage for specialist RC applications. The 2S1P configuration (two cells in series, one cell in parallel) delivers the nominal 7.4V voltage with a maximum charge voltage of 8.4V when fully charged, providing the electrical characteristics essential for hand-launch gliders and DLG aircraft. At 300mAh capacity, this pack strikes the precise balance required for F3K and DLG applications—sufficient energy for meaningful flight sessions without the weight penalty that would compromise climbing ability and overall flight performance. The 20C continuous discharge rating permits peak current draw of up to 6 amps, ensuring responsive power delivery during aggressive manoeuvres or motor-assisted launch phases. Built with genuine lithium polymer cell technology and housed in a protective soft case, this battery incorporates the manufacturing precision and quality control that has defined GENSACE's reputation across two decades of battery development. The JR connector lead is soldered to exacting standards ensuring reliable electrical contact and long-term durability. Weight distribution is optimised to maintain aircraft balance, whilst the compact envelope permits installation in airframes where conventional batteries simply cannot fit. Whether you're chasing maximum climb rate in thermal lift or optimising glide characteristics for distance events, the GENSACE Li-Po Sport 2S pack delivers the reliable, consistent power that competitive hand-launch glider pilots demand.

What's in the Box

• GENSACE Li-Po Sport 2S 7.4V 300mAh 20C LiPo battery pack
• JR connector lead (pre-soldered)
• Soft protective case

Frequently Asked Questions

• Is the GENSACE 2S 300mAh 20C battery suitable for F3K and DLG hand-launch gliders? — Yes, this battery is specifically designed and recommended for F3K/DLG hand-launch gliders. The 7.4V voltage, lightweight 17g mass, and compact 45 x 16 x 13mm dimensions make it ideally suited to these applications where every gram and millimetre matters for performance.
• What is the flight time I can expect from this 300mAh battery? — Flight time depends on your specific glider design, weight, motor power (if applicable), and flying style. Generally, the 300mAh capacity provides adequate energy for meaningful flight sessions in hand-launch glider applications, typically ranging from several minutes to over ten minutes depending on conditions and aircraft efficiency.
• Can I use this battery in other RC aircraft besides hand-launch gliders? — Whilst this pack is optimised for F3K/DLG applications, it can potentially be used in other lightweight RC aircraft provided they operate at 7.4V (2S LiPo) and have the physical space to accommodate the 45 x 16 x 13mm form factor. However, the 300mAh capacity may be limiting for higher-power applications.
• Is the JR connector compatible with my RC equipment? — The JR connector is one of the most widely used standards in RC applications. Check your receiver and charger documentation to confirm JR compatibility. If your equipment uses a different connector type, you can purchase adapter cables from RC retailers, though connecting directly with the factory JR lead is always preferable.
• How should I charge this GENSACE 2S LiPo battery? — Use a quality LiPo-compatible charger with 2S support. Set the charger to 2S mode and charge at no more than 1C rate (approximately 0.3A for this 300mAh pack) for optimal battery longevity. Never attempt to charge with non-LiPo chargers, as this may damage the battery or create safety hazards.
• What is the weight advantage of this 17g battery compared to alternatives? — At 17g, this battery is exceptionally light, making it ideal for minimising total aircraft mass. In hand-launch gliders where every gram affects climb rate and glide efficiency, this lightweight specification directly translates to improved performance and better thermal soaring capability.
• Why does this battery have a 20C discharge rating? — The 20C rating permits sufficient peak current delivery (up to 6 amps) for responsive motor performance during launch phases or aggressive manoeuvres, whilst maintaining the efficiency and safety margins essential for reliable operation in flight-critical applications.
• How do I store this LiPo battery safely? — Store the GENSACE Li-Po pack in a cool, dry location away from direct sunlight. For extended storage beyond several weeks, consider storing at partial charge (approximately 3.85V per cell, or 7.7V for this 2S pack). Never store fully charged or fully depleted, and always inspect for damage before use after 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 Sport 2S 7.4V 300mAh 20C with JR O-G2S0300-20JR 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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