GENSACE Li-Po 2S 7.4V 3800mAh Tx with BEC O-G2S3800-B

• Brand: Gens Ace
• Model Number: O-G2S3800-B
• Supplier ID: B-TX-3800-2S1P
• Battery Type: LiPo (Lithium Polymer)
• Voltage: 7.4V
• Cell Count: 2S (two cells in series)
• Capacity: 3800mAh
• Connector Type: BEC
• Length: 70mm
• Width: 52mm
• Depth: 19mm
• Weight: 140g
• Barcode: 6928493302590
• Suggested Compatibility: QX7 and other RC transmitter models
• Application: RC Transmitter power

Overview

The Gens Ace Transmitter LiPo 2S 7.4V 3800mAh with BEC connector is a reliable, compact power solution designed specifically for RC transmitters and related applications. Whether you are an experienced RC enthusiast operating advanced RC equipment in the UK or exploring the world of remote control vehicles for the first time, this battery delivers consistent performance in a portable format that fits easily into your RC hobby kit. The 3800mAh capacity provides extended operating time between charges, making it an essential component for any serious RC car UK operator or radio gear enthusiast who demands dependable power without compromise.

This transmitter LiPo battery combines practical engineering with user-friendly specifications. The 7.4V two-cell configuration offers the ideal voltage sweet spot for most modern RC transmitters, providing sufficient power delivery whilst maintaining compatibility with a broad range of RC models. The integrated BEC connector ensures straightforward installation and secure connection to your equipment, eliminating the need for adapter cables or complicated wiring. With a lightweight profile of just 140g and compact dimensions of 70 x 52 x 19mm, this battery remains portable enough to carry to the track, field, or your local RC meeting without adding significant weight to your gear bag.

Gens Ace, a recognised brand in the RC battery sector, has engineered this transmitter battery to meet the demands of serious hobbyists. The O-G2S3800-B model is particularly suitable for popular RC transmitters such as the QX7 and similar radio systems, making it an excellent upgrade or replacement battery for those seeking extended operating time and reliable performance. If you are searching for a quality transmitter battery that will keep your RC transmitter powered throughout a full day of racing, bashing, or competitive flying, this Gens Ace option delivers excellent value and proven reliability.

Key Features

• 3800mAh Capacity — The 3800mAh energy capacity delivers extended runtime between charging sessions, ensuring your RC transmitter remains powered during lengthy racing events, practice sessions, or competitive gatherings without interruption.
• 7.4V Two-Cell LiPo Configuration — The 2S voltage specification (two cells in series) provides the optimal power output for modern RC transmitter systems, balancing performance with compatibility across a wide range of radio gear and RC models.
• BEC Connector — The integrated BEC (Battery Elimination Circuit) connector offers plug-and-play installation with most RC transmitters, ensuring a secure, reliable connection without requiring additional adapters or soldering.
• Lightweight and Compact Design — Measuring just 70 x 52 x 19mm and weighing only 140g, this battery remains highly portable, fitting easily into your RC kit bag or equipment case for transport to the track or field without adding unnecessary bulk.
• Broad Model Compatibility — The O-G2S3800-B is verified as suitable for popular RC transmitters such as the QX7 and numerous other radio systems, making it an excellent choice for those seeking a reliable transmitter power source.
• Dependable Gens Ace Quality — Manufactured by Gens Ace, a recognised brand in the RC battery industry, this product delivers the reliable performance and build quality expected from an established battery supplier trusted by RC enthusiasts throughout the UK.

Technical Performance

The Gens Ace Transmitter LiPo battery represents solid engineering focused on delivering consistent power to your RC transmitter throughout extended operating sessions. The 7.4V nominal voltage of a two-cell LiPo configuration provides the sweet spot for modern RC radio systems, offering sufficient power delivery to drive the transmitter's electronics, RF circuitry, and display systems whilst maintaining stable voltage under load. The 3800mAh capacity is specifically calibrated for transmitter applications, where power consumption is considerably lower than in high-performance RC vehicles, meaning a single charge will typically last through multiple hours of operation depending on your transmitter model and usage patterns. The battery's 140g mass is light enough to integrate into any transmitter setup without affecting balance or ergonomics, whilst the compact footprint of 70 x 52 x 19mm ensures it fits neatly within or alongside standard transmitter enclosures. The BEC connector provides a standardised connection interface that is widely recognised across the RC hobby industry, simplifying integration with your existing equipment and eliminating compatibility concerns. Gens Ace's manufacturing standards ensure consistent cell quality and internal resistance characteristics, meaning you can depend on reliable voltage delivery and cycle-life performance over many charge-discharge cycles. Whether you are operating QX7 transmitters or compatible radio systems from other manufacturers, this battery will deliver the dependable power your remote control equipment demands.

What's in the Box

• Gens Ace 2S 7.4V 3800mAh Transmitter LiPo Battery with BEC Connector

What You Need to Complete

• LiPo Battery Charger (suitable for 2S LiPo batteries)
• RC Transmitter compatible with BEC connector (such as QX7 or similar models)

Frequently Asked Questions

• Is the Gens Ace 2S 7.4V 3800mAh transmitter battery suitable for my RC transmitter? — This battery is confirmed compatible with the QX7 and numerous other RC transmitter models. The 7.4V two-cell LiPo configuration and BEC connector make it a suitable choice for most modern RC radio systems. If you are uncertain about compatibility with a specific transmitter model, we recommend contacting our expert team at RC Model Shop for personalised advice before purchase.
• How long will this battery power my RC transmitter? — The 3800mAh capacity delivers extended runtime specific to transmitter applications, where power consumption is considerably lower than in RC vehicles themselves. Most users can expect multiple hours of continuous transmitter operation on a single charge, though actual runtime depends on your specific transmitter model, feature usage (such as backlight brightness), and operating patterns.
• What connector does this battery use? — The Gens Ace O-G2S3800-B features a BEC connector, which is a standardised connection type widely recognised across the RC hobby industry. BEC connectors offer secure, reliable connections suitable for transmitter applications without requiring additional adapter cables.
• Is this transmitter battery suitable for beginners? — Yes, this battery is appropriate for RC enthusiasts at all experience levels. The straightforward BEC connector and plug-and-play design mean even newcomers to the RC hobby can integrate this battery without technical complications. However, you will need a suitable LiPo charger to recharge the battery between sessions.
• What is the difference between this transmitter battery and vehicle LiPo batteries? — Transmitter batteries are specifically designed for low-power applications where extended runtime is valued over peak discharge rates. This 3800mAh transmitter battery delivers consistent voltage over many hours of operation, whereas RC vehicle batteries prioritise high current discharge for motor performance. The BEC connector is also standard for transmitter applications, whereas vehicle batteries typically use XT60 or similar high-current connectors.
• Do I need a special charger for this 2S LiPo battery? — You will require a LiPo battery charger capable of handling two-cell (2S) LiPo batteries. Many affordable and reliable LiPo chargers are available that support 2S charging. We recommend selecting a charger with built-in balance charging functionality to maximise cell longevity and safety.

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 3800mAh Tx with BEC O-G2S3800-B 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.

We want to make sure your delivery goes smoothly, so here are some important details about our service:

• For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
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• If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
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• For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.