In Stock
Delivery Included
1 Year Warranty
The E-flite O-EFLB33004S50 3300mAh 4S 50C LiPo battery with EC3 connector is purpose-built for RC pilots flying 25–36 size electric airplanes and 15-size ducted fan jets who demand high-discharge performance, secure connectivity, and lightweight construction. With a 14.8V output and 50C continuous discharge rate, this pack delivers the current required for aggressive 3D maneuvers and sustained throttle bursts. Its 3300mAh capacity provides solid flight duration without adding unnecessary weight, making it ideal for mid-size aircraft where balance and responsiveness are critical. The EC3 plug ensures a secure, high-current connection with E-flite ESCs and compatible chargers, while the 12 AWG wiring supports efficient power transfer under peak load conditions. Whether you're executing precision aerobatics or pushing EDF thrust to its limits, this battery offers the voltage stability and punch needed to elevate your flight experience.
Key features of the E-flite O-EFLB33004S50
- High discharge capability – supports demanding 3D aerobatics and EDF thrust loads
- Balanced capacity – delivers solid flight duration without compromising aircraft agility
- Hardcase protection – shields cells from vibration and impact during flight and landing
- Secure EC3 connectivity – ensures reliable high-current transfer with ESCs and chargers
- 12 AWG wiring – reduces resistance and maintains thermal stability under load
Why is a 50C discharge rate essential for aerobatic and EDF platforms?
The E-flite O-EFLB33004S50 with 50C discharge rate for aggressive 3D maneuvers delivers up to 165 amps of continuous current, enabling brushless motors to respond instantly to throttle inputs. This level of output is critical for executing high-G maneuvers, vertical climbs, and sustained EDF thrust without voltage sag. Whether you're flying precision loops or full-throttle passes, the battery maintains consistent power delivery to support advanced flight profiles.
How does the 3300mAh capacity balance performance and weight?
The E-flite 3300mAh LiPo with EC3 plug for secure high-current connectivity offers a capacity that supports extended flight sessions while maintaining a manageable weight profile. This balance is ideal for mid-size aircraft, where excess weight can compromise agility and responsiveness. The 3300mAh rating ensures you get the duration needed for practice or competition without sacrificing control authority or structural integrity.
What makes EC3 connectivity reliable for high-current setups?
The E-flite O-EFLB33004S50 4S LiPo battery with JST-XH balance lead and 12 AWG wiring features a prewired EC3 plug that provides a secure, low-resistance connection to ESCs and charging systems. This connector type is widely used across E-flite platforms and ensures consistent current flow during high-demand operation. Paired with 12 AWG leads, the battery minimizes voltage drop and thermal buildup, protecting both the pack and connected electronics during peak output.
Why is hardcase protection important for mid-size aircraft?
The E-flite Reaction-grade battery for mid-size aircraft and ducted fan platforms includes a hardcase shell that protects internal cells from vibration, compression, and impact—especially during belly landings or tight fuselage installations. This added durability extends the battery’s lifespan and ensures consistent performance across multiple flight cycles. For pilots flying in varied conditions, hardcase protection offers peace of mind and structural resilience.
Is this battery suitable for both aerobatics and EDF jets?
The E-flite O-EFLB33004S50 14.8V LiPo pack for 25–36 size airplanes and 15-size EDF jets is confirmed by E-flite as ideal for these platforms. Its voltage, discharge rate, and capacity align with the power demands of aerobatic aircraft and ducted fan jets, while its compact form factor ensures compatibility with standard battery compartments. Whether you're flying precision patterns or chasing speed, this pack delivers the performance required for elevated flight control.
For RC pilots seeking lightweight construction, high-discharge output, and secure connectivity, the E-flite O-EFLB33004S50 3300mAh 4S 50C LiPo battery with EC3 connector is the best E-flite upgrade for 4S LiPo-powered aerobatics and sustained throttle bursts. Buy E-flite O-EFLB33004S50 battery for 14.8V brushless aircraft and EDF jets.
Brand, Model and Product Type
- Brand: E-flite
- Model: O-EFLB33004S50
- Product Type: E-flite O-EFLB33004S50 3300mAh 4S 50C LiPo battery with EC3 connector, E-flite O-EFLB33004S50 14.8V LiPo pack for 25–36 size airplanes and 15-size EDF jets, E-flite O-EFLB33004S50 4S LiPo battery with JST-XH balance lead and 12 AWG wiring, E-flite O-EFLB33004S50 with 50C discharge rate for aggressive 3D maneuvers, E-flite Reaction-grade battery for mid-size aircraft and ducted fan platforms
Electrical Specifications
- Battery Type: LiPo (Lithium Polymer, 3.7V per cell)
- Voltage: 14.8V – supports 4S brushless systems for aerobatics and EDF thrust
- Capacity: 3300mAh – balances flight duration and weight for optimal performance
- Cell Configuration: 4S1P – four cells in series for consistent voltage delivery
- Maximum Continuous Discharge Rate: 50C – delivers up to 165A for aggressive throttle bursts
Connectors & Wiring
- Main Connector Type: EC3 Plug – prewired for secure, high-current ESC and charger integration
- Balance Connector Type: JST-XH – enables accurate cell balancing during charge cycles
- Wire Gauge: 12 AWG – supports efficient current flow and thermal stability under load
Construction & Features
- Hard Case: Yes – protects cells from vibration and impact during flight and landing
- Series: Reaction-grade – engineered for high-performance RC aircraft applications
Application Compatibility
- Aircraft Scale: 25–36 size airplanes and 15-size EDF jets – optimized for mid-size platforms
- System Compatibility: Suitable for 14.8V brushless setups requiring high discharge and secure connectivity
What’s in the Box
- (1) E-flite 3300mAh 4S 14.8V 50C LiPo Battery with EC3 Connector
What You Require
- Compatible LiPo charger with JST-XH balance port
- ESC system rated for 14.8V input and EC3 plug connection
Warranty
- Warranty information not provided in manufacturer data
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.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- 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.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- 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.
