GENSACE Li-Po Sport 4S 14.8V 900mAh 80C with XT30 O-G4S0900-80X3

• Brand: Gens Ace
• Model Number: O-G4S0900-80X3
• SKU: GEA9004S80X3
• Battery Type: Lithium Polymer (LiPo)
• Cell Configuration: 4S1P (4 cells in series, 1 cell in parallel)
• Nominal Voltage: 14.8V
• Capacity: 900mAh
• Discharge Rating: 80C
• Maximum Continuous Discharge Current: 72A (900mAh × 80C)
• Weight: 102g
• Length: 106mm
• Width: 20mm
• Height: 26mm
• Case Type: Soft Case
• Connector Type: XT30
• Manufacturer Certifications: ISO9001, ISO14001
• Warranty: 1 year manufacturer warranty
• Recommended Application: F5J gliders and lightweight RC aircraft
• Key Features: Strong body construction, easy to balance, low internal resistance (Low IR), high energy density, stable voltage delivery

Overview

The Gens Ace Li-Po Sport 4S 14.8V 900mAh 80C with XT30 connector is a compact, high-performance lithium polymer battery pack designed specifically for lightweight RC applications, particularly F5J gliders and similar aerial models. This battery combines dependable power delivery with a small, manageable footprint, making it an ideal choice for RC enthusiasts in the UK who demand reliability without excessive weight. Whether you're a seasoned RC flyer or exploring electric-powered RC models for the first time, this Gens Ace battery offers the practical blend of performance and value that serious hobbyists expect from a recognised manufacturer.

Built with a strong, durable case construction and engineered for easy balancing, the Gens Ace 4S pack delivers consistent voltage throughout your flight, ensuring smooth, predictable performance from start to finish. The 900mAh capacity provides adequate runtime for extended flying sessions, whilst the 80C discharge rating enables sustained high-current draw when you need it. At just 102 grams, this battery is light enough for sensitive RC aircraft applications where every gram counts, yet robust enough to handle the demands of competitive flying. Gens Ace batteries are manufactured to ISO9001 and ISO14001 standards, guaranteeing the safety and quality you need for reliable RC operation.

If you're flying F5J gliders, slope soaring aircraft, or other lightweight RC models that require a compact power source, this Gens Ace battery represents excellent value for money. The factory-fitted XT30 connector means you can start flying immediately without additional soldering or modifications, and the soft case construction keeps weight to a minimum whilst providing adequate protection during transport and storage.

Key Features

• 4S 14.8V Configuration — The 4-cell series (4S) configuration delivers 14.8 volts nominal, providing the voltage step-up needed for reliable performance in lightweight RC aircraft and gliders, whilst remaining within safe operating parameters for electric motors and electronic components commonly used in these applications.
• 900mAh Capacity — With 900 milliamp-hours of usable energy, this battery pack delivers sufficient runtime for extended flying sessions in F5J competition gliders and similar models, allowing you to maximise your flight time without constant recharging.
• 80C Discharge Rating — The 80C continuous discharge rate means this battery can safely deliver up to 72 amps of current (900mAh × 80), providing responsive power delivery and stable voltage under load, essential for dynamic flying manoeuvres and sustained climbs.
• Factory-Fitted XT30 Connector — Pre-soldered and tested XT30 connectors eliminate the need for additional soldering work, reducing setup time and allowing immediate use straight from the box. The XT30 connector type is a standard in lightweight RC applications, ensuring compatibility with most modern gliders and electric aircraft.
• Strong Body Construction — The robust outer case protects internal cells from physical damage during transport, handling and storage, extending battery life and maintaining safety during regular use in RC operations.
• Easy to Balance — Gens Ace has engineered this pack with balanced cell characteristics, making it straightforward to maintain proper cell voltage balance during charging, a critical requirement for safe lithium polymer battery operation and longevity.
• Lightweight Design at 102g — Weighing just 102 grams, this battery is exceptionally light for its capacity and discharge rating, making it ideal for F5J gliders and other weight-sensitive RC aircraft where every gram impacts performance and flight duration.
• High Energy Density — Gens Ace specialises in high power lithium polymer batteries with energy density specially adapted to RC aircraft types, delivering maximum power output per unit of weight, a critical advantage in competitive glider flying.
• Low Internal Resistance — The low IR (internal resistance) technology provides stable voltage output throughout your entire mission, preventing voltage sag during high-current draw and maintaining consistent power delivery until the battery reaches safe discharge limits.
• ISO9001 and ISO14001 Certified Manufacturing — Gens Ace and its manufacturing partners comply with international quality and environmental standards, ensuring every battery meets strict safety, performance and reliability criteria before shipping to customers.

Technical Performance

The Gens Ace 4S 14.8V battery represents a carefully engineered power solution optimised for F5J competition gliders and lightweight RC aircraft applications. The 14.8 volt nominal output (4 cells × 3.7V per cell) is the industry standard for modern electric gliders, providing the voltage headroom needed for brushless motor systems whilst remaining safe for integrated electronic speed controllers and receiver equipment. The 80C continuous discharge capability ensures stable power delivery even during aggressive flying with maximum throttle applications, critical for thermal soaring and aerobatic manoeuvres in competition environments. At 102 grams total weight with dimensions of 106mm length × 20mm width × 26mm height, this is one of the most compact and lightweight battery solutions available for F5J gliders, minimising the impact on aircraft balance and performance. The soft case construction keeps weight to an absolute minimum whilst the strong outer shell protects internal lithium polymer cells from crushing forces, impact damage and puncture during regular handling. Gens Ace's proprietary energy density technology means more usable energy is packed into each gram of battery weight, translating directly to longer flight times and better climbing performance compared to heavier alternatives. The low internal resistance design maintains voltage stability throughout discharge, preventing the voltage sag that can limit motor response and cause sluggish handling in competitive flying situations.

What's in the Box

• Gens Ace 4S 14.8V 900mAh 80C LiPo battery pack with XT30 connector
• Battery pack only — no charger, balance connector cable or additional accessories included

What You Need to Complete

• LiPo battery charger compatible with 4S packs (capable of balancing charge) — we recommend a multi-chemistry charger with balance charging capability for safe and efficient charging
• XT30 to balance lead adapter cable if your charger does not have integrated balance connectors
• LiPo storage bag or fireproof container for safe battery storage when not in use

Frequently Asked Questions

• Is the Gens Ace 4S 900mAh 80C battery suitable for F5J competition gliders? — Yes, this battery is specifically designed and recommended for F5J glider applications, delivering the exact voltage, capacity and discharge rate required for competitive thermal and slope soaring aircraft. The 900mAh capacity provides adequate runtime for competition flights, and the lightweight 102-gram design minimises impact on aircraft balance and performance.
• What is the difference between 80C and other discharge ratings? — The 80C rating refers to the maximum continuous discharge current in multiples of the battery capacity. An 80C rating on a 900mAh pack means this battery can safely deliver up to 72 amps continuously (900mAh × 80 = 72A). Higher C ratings allow more aggressive power delivery and faster acceleration, whilst lower C ratings are suitable for gentler applications. For F5J gliders, 80C provides ample power for dynamic flying whilst maintaining excellent energy efficiency.
• How do I charge a 4S LiPo battery safely? — Always use a dedicated LiPo battery charger with balance charging capability. Connect the main XT30 connector to the charger's main battery input, and connect the balance connector (if available) to the charger's balance charging port. Charge at 1C rate (900mA for this pack) or slower to maximise battery lifespan. Never leave a charging battery unattended, and always charge on a non-flammable surface or inside a LiPo charging bag. Stop charging immediately if you detect swelling, burning smell, or excessive heat.
• What is the weight and dimensions of this battery? — The Gens Ace 4S 14.8V 900mAh pack weighs approximately 102 grams and measures 106mm in length, 20mm in width and 26mm in height. These compact dimensions make it ideal for weight-sensitive RC aircraft where space and weight are critical design constraints.
• Can I use this battery with my F5J glider? — This battery is purpose-designed for F5J gliders and similar lightweight RC aircraft. The XT30 connector is the standard for modern glider applications, and the 4S 14.8V configuration is compatible with virtually all F5J brushless motor and ESC combinations currently in use. Verify your aircraft's connector type before purchasing to ensure compatibility.
• How long does the battery last on a single charge? — Flight time depends on your glider model, flying style, motor characteristics and climbing technique. Typically, a 900mAh pack provides 20-30 minutes of flight time in thermal soaring conditions, though this varies significantly based on application. For accurate runtime estimates, consult your aircraft's manual or contact the manufacturer.
• What makes Gens Ace batteries reliable for RC use? — Gens Ace batteries are engineered with high energy density, low internal resistance for stable voltage delivery, and manufactured to ISO9001 quality and ISO14001 environmental standards. The strong body construction protects cells during transport and use, and the easy-to-balance cell configuration simplifies safe charging and extends battery lifespan. All Gens Ace products come with a 1-year manufacturer's warranty.

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 4S 14.8V 900mAh 80C with XT30 O-G4S0900-80X3 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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