Gens Ace 2S 7.4V 800mAh 45C LiPo Battery with BEC Connector O-G2S0800-45B

• Brand: Gens Ace
• Model Number: O-G2S0800-45B
• Battery Type: Lithium Polymer (LiPo)
• Cell Configuration: 2S (2 cells in series)
• Nominal Voltage: 7.4V
• Fully Charged Voltage: 8.4V (approximately)
• Capacity: 800mAh
• Discharge Rating: 45C
• Maximum Continuous Discharge Current: 36A (45C × 800mAh)
• Connector Type: BEC (Battery Elimination Circuit)
• Case Type: Soft Case (nylon fabric)
• Weight: 47g
• Length: 56mm
• Width: 29mm
• Height: 15mm
• Barcode: 6928493308134
• Included in Box: 1 × Gens Ace 2S 7.4V 800mAh 45C LiPo battery pack with BEC connector

Overview

The Gens Ace 2S 7.4V 800mAh 45C LiPo battery with BEC connector is a compact, lightweight power solution designed for RC enthusiasts across the UK who demand reliable performance in a space-efficient package. This soft case battery delivers impressive discharge capability in a footprint that suits tight installations, making it an ideal choice for small-scale RC cars, drones, and helicopters. Whether you're a seasoned RC competitor or discovering the world of electric RC models for the first time, this Gens Ace battery combines proven reliability with practical engineering to keep your RC vehicles running smoothly during extended sessions.

Built by Gens Ace, a manufacturer recognised worldwide for quality lithium polymer batteries, the O-G2S0800-45B represents exceptional value for RC hobbyists looking to expand their battery collection. The 45C discharge rating ensures consistent power delivery even during aggressive acceleration and high-demand manoeuvres, whilst the compact dimensions make it a perfect fit for scale RC cars UK users who work with limited chassis space. The integrated BEC connector eliminates the need for additional adapters, streamlining your setup and reducing potential compatibility issues.

At just 47 grams, this 2S LiPo battery minimises added weight whilst maximising performance — a critical consideration for anyone serious about RC racing or weekend bashing. The soft case construction keeps your battery pack lightweight and flexible, protecting the cells whilst maintaining the compact profile that makes this pack so versatile across different RC platforms.

Key Features

• 2S Cell Configuration (7.4V) — Two cells in series deliver a nominal voltage of 7.4V, providing the optimal balance between power output and compatibility with the broadest range of small to medium-scale RC equipment. This is a standard voltage that works seamlessly with countless RC ESCs, motors and receivers available in the UK market.
• 45C Discharge Rating — This specification means the battery can safely discharge at 45 times its capacity per hour, delivering 36 amps of continuous current (45C × 800mAh = 36A). This high discharge rating ensures snappy acceleration, sustained power under load, and the responsiveness required for competitive RC driving without voltage sag.
• 800mAh Capacity — Whilst modest compared to larger batteries, 800mAh provides sufficient energy for typical RC sessions on small-scale vehicles. The actual runtime depends on your specific RC model and driving style, but this capacity is optimised for weight-sensitive applications where every gram counts.
• Soft Case Construction — Unlike rigid plastic cases, the soft case design minimises overall package weight and volume, making it easier to achieve proper weight distribution in your RC chassis. The protective fabric helps prevent minor damage during transport and storage without adding unnecessary bulk.
• BEC Connector — The Battery Elimination Circuit connector is standard across the RC hobby and means your receiver and servos can be powered directly from this battery pack without requiring separate batteries for your radio system. This simplifies wiring, reduces weight, and improves reliability by consolidating your power system.
• Compact Dimensions (56 × 29 × 15mm) — These space-saving proportions fit into tight battery bays and chassis designs where larger packs would not work. The specific height of just 15mm is particularly important for low-profile RC installations common in modern scale models and racing platforms.
• Ultra-Light Weight (47g) — Every gram saved in battery weight translates directly to improved acceleration, braking and overall handling characteristics. At under 50 grams, this pack is ideal for weight-critical applications including micro RC cars, compact drones and scale crawlers where mass distribution is crucial to performance.

Technical Performance

The Gens Ace 2S 7.4V 800mAh 45C LiPo represents a carefully engineered balance between power delivery, durability and practical usability. With a 45C discharge rating, this battery can provide sustained current output of up to 36 amps, making it suitable for brushless systems in the 4000–6000KV motor range typical of small-scale RC racing and recreational driving. The 7.4V nominal voltage (with a fully charged voltage of approximately 8.4V) is the industry standard for 2S systems and ensures compatibility with virtually every RC ESC, receiver and servo commonly available to UK buyers. The soft case construction uses durable nylon fabric that protects the lithium polymer cells from minor impacts, punctures and abrasion whilst maintaining flexibility for tight installations. Gens Ace cells are known for consistent performance across discharge cycles, maintaining stable voltage output throughout your driving session and delivering the responsive throttle control that both beginners and competition drivers demand. The BEC connector provides reliable power to your receiver and servo systems, eliminating the need for secondary power sources and reducing overall system complexity. Whether you're building a ready-to-run RC car from a kit or upgrading an existing model with fresh power, this battery's compact footprint and proven performance make it a versatile choice for RC hobbyists across the UK.

What's in the Box

• Gens Ace 2S 7.4V 800mAh 45C LiPo battery pack with soft case
• BEC connector (factory installed)

Frequently Asked Questions

• What RC models is the Gens Ace 2S 800mAh 45C battery suitable for? — This battery is designed for small to medium-scale RC cars, helicopters, drones and other vehicles that use 2S LiPo power systems. The compact dimensions and lightweight construction make it especially well-suited for micro RC cars, scale crawlers, and any application where space is limited. Always check your RC model's manual to confirm 2S compatibility before purchasing.
• What does the 45C discharge rating mean for my RC car? — The 45C rating indicates the maximum safe continuous current this battery can deliver without damage. For an 800mAh battery, 45C × 800mAh = 36 amps maximum continuous discharge. This high discharge rating ensures your RC car receives responsive throttle control and sustained power during aggressive driving, with minimal voltage sag even under heavy load.
• Will this battery work with my existing RC receiver and servos? — Yes, the BEC (Battery Elimination Circuit) connector provides regulated power directly to your receiver and servo systems, eliminating the need for separate batteries in your RC car. The 7.4V output from this 2S LiPo pack is standard across the hobby and compatible with virtually all RC receivers and analogue servos commonly available in the UK.
• How long will this battery last on a single charge? — Runtime depends on your specific RC model, motor size, ESC programming and driving style. Generally, an 800mAh battery provides 10–20 minutes of active driving on small-scale RC cars, though this varies considerably. We recommend having multiple batteries charged and ready to rotate during extended RC sessions.
• Is this battery suitable for beginners? — Yes, the Gens Ace 2S 800mAh 45C LiPo is an excellent choice for newcomers to RC hobbies. The standard 2S voltage, BEC connector and proven Gens Ace reliability make setup straightforward, whilst the compact size works with most beginner-friendly RC kits available in the UK. Always follow proper lithium polymer charging and storage practices outlined in your RC charger manual.
• What is the difference between this 800mAh pack and larger capacity batteries? — Larger capacity batteries (such as 1500mAh or 2200mAh) provide longer runtime but add significant weight and take up more space. The 800mAh pack prioritises weight savings and compact dimensions, making it perfect for applications where every gram matters and battery bay space is limited. Choose based on your specific RC model's weight capacity and your intended use.
• How should I store this battery when not in use? — Lithium polymer batteries should always be stored in a cool, dry location, ideally at a partial charge state (around 50% capacity) rather than fully charged or fully discharged. Keep the battery in a fireproof LiPo storage bag for safety, away from flammable materials. Never leave a LiPo battery unattended while charging, and always use a dedicated LiPo charger designed for 2S packs.
• What does BEC connector mean? — BEC stands for Battery Elimination Circuit. The BEC connector allows your RC receiver and servo systems to draw power directly from the main battery pack, eliminating the need for separate batteries to power your radio receiver. This reduces overall system weight, improves reliability, and simplifies your RC car's wiring.

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 2S 7.4V 800mAh 45C with BEC O-G2S0800-45B 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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