VolantexRC Sport Cub 500mm Battery 3.7V 400mAh Lipo for 4CH Trainer Plane

Multiply Flight Times, Eradicate In-Air Power Cutoffs, and Keep Your RC Trainer Airborne Longer

A single battery pack provides limited flight time, which often cuts your park-flying sessions short just as you are getting into a rhythm. For beginner pilots practicing maneuvers with the VolantexRC Sport Cub 500mm, aged or over-discharged LiPo cells quickly lead to weak performance, sudden low-voltage motor cuts, and reduced power stability. When your battery weakens, the plane struggles against light wind gusts, loses vertical climbing authority, and can cause the onboard gyro system to miscalculate control feedback due to sudden voltage drops. Stocking up on these factory-fresh 3.7V 400mAh replacement batteries completely solves your field power limits. They offer constant high-current discharge to maintain steady thrust, protect your flight electronics from brownouts, and ensure you have plenty of spare packs lined up for continuous, worry-free flight training.  Ships worldwide.

Product Highlights

• Optimized 400mAh Flight Capacity: Engineered with a lightweight internal matrix to maximize energy storage without adding unnecessary nose-weight to your 500mm trainer airframe.

• Original Factory Dimensions: Modeled directly after the stock cell architecture to guarantee a tight, perfect slide-in fit inside the default fuselage compartment.

• Pre-Soldered Low-Resistance Plug: Comes terminated with the precise 2-pin white connector head, preventing electrical arcing and enabling clean, clip-lock connection to the plane's internal mainboard.

• Linear Voltage Output: Maintains a flat, predictable 3.7V output curve throughout the majority of the discharge cycle, providing stable throttle linearity from takeoff to final approach landing.

Compatibility

For the VolantexRC Sport Cub 500mm 4-Channel RC Trainer Airplane only.
Full model page (specs & photos):

https://www.kidstoylover.com/products/volantexrc-sport-cub-500mm-4-channel-rc

What’s in the Box

• 1 x  VolantexRC Sport Cub 500mm Battery（ 3.7V 400mAh）

Install Tips

• Inserting the Battery into the Fuselage Hatch: Unlatch the plastic battery door located under the nose section of your Sport Cub 500mm; slide the silver 3.7V 400mAh cell flat into the pre-molded foam bay, making sure the lead wires face forward toward the cowling.

• Connecting the 2-Pin Power Cable: Align the guide rails of the battery's white 2-pin plug with the socket terminal branching out from the plane's fuselage interior; press the connectors together firmly until they seat completely, ensuring the red wire aligns with the positive side of the receiver terminal.

• Pre-Flight Balance Adjustment: Gently press the electrical wires flat inside the bay before snapping the external plastic battery hatch shut; check that the plane balances neutrally at its center of gravity marks on the wings to ensure the gyro stabilizes effectively.

• Charging Safety and Safe Storage Rules: Use the official USB charger adapter to charge this 1S battery, and disconnect it immediately once the indicator light signals full charge; never leave a charging cell unattended, and store all spare LiPo packs inside a dedicated fire-resistant safety bag when not at the flying field.

Support & Warranty

• 3-month warranty on manufacturing defects
• Ships worldwide