UBEC-8A+4A
UBEC-8A+4A
UBEC-8A+4A
The UBEC-8A+4A is a dual-output universal battery eliminator and charger module designed for RC aircraft, drones, and multi-rotor platforms requiring simultaneous regulated power distribution. Professional hobbyists, drone technicians, and RC enthusiasts rely on this device to efficiently convert high-voltage battery packs into stable lower-voltage outputs for flight controllers and servo systems. This product solves the critical problem of voltage regulation and power distribution in complex RC systems where multiple components demand different voltage levels from a single battery source.
Product Overview
The UBEC-8A+4A operates on the principle of switched-mode power conversion, utilizing high-frequency switching circuits to efficiently step down voltage from input sources (typically 2-6S LiPo batteries) to regulated outputs. The dual-channel architecture provides an 8-ampere primary output and a 4-ampere secondary output, allowing simultaneous powering of flight controllers, ESCs, and auxiliary systems without voltage sag or interference. The switching frequency of 32kHz minimizes electromagnetic noise that could affect sensitive avionics and gyroscope readings in flight-critical applications.
What distinguishes the UBEC-8A+4A is its integrated over-current protection, thermal shutdown mechanism, and low-dropout voltage regulation that maintains stable 5V output even under transient load conditions. The compact form factor and lightweight design make it ideal for weight-sensitive aerial platforms, while the dual outputs eliminate the need for multiple separate regulators, reducing system complexity and potential failure points. The module features reverse-polarity protection and input voltage filtering to handle the electrical noise inherent in high-performance brushless motor systems.
Key Specifications
| Specification | Details |
| Product Type | Dual-Output UBEC (Universal Battery Eliminator Circuit) |
| Brand | Standard RC Grade Component |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Input Voltage Range | 7.4V to 25.2V (2S-6S LiPo) |
| Primary Output | 5V at 8A maximum continuous current |
| Secondary Output | 5V at 4A maximum continuous current |
| Switching Frequency | 32kHz for minimal RF interference |
| Efficiency | 92-96% under typical load conditions |
| Protection Features | Over-current, thermal shutdown, reverse-polarity protection |
| Dimensions | 45mm x 28mm x 15mm |
| Weight | Approximately 18 grams |
Key Features
- Dual Independent 5V Outputs: 8A primary channel and 4A secondary channel enable powering multiple flight systems simultaneously without voltage interaction or cross-talk
- Wide Input Voltage Acceptance: Compatible with 2S through 6S LiPo battery configurations, providing flexibility across different drone and RC aircraft platforms
- Low Noise Switching Design: 32kHz switching frequency reduces electromagnetic interference that could corrupt gyroscope and accelerometer data in flight control systems
- Integrated Protection Circuitry: Over-current detection, thermal shutdown at 85°C, and reverse-polarity protection prevent damage from electrical faults and user error
- High Conversion Efficiency: 92-96% efficiency minimizes heat generation and battery drain, extending flight time and reducing thermal stress on components
- Compact Lightweight Construction: 45mm x 28mm footprint and 18-gram weight suitable for weight-critical UAV and racing drone applications
Applications and Use Cases
- FPV Racing Drones: Provides stable 5V power to flight controllers, video transmitters, and camera systems while handling the high-current demands of brushless ESCs without voltage sag
- Quadcopter and Hexacopter Platforms: Powers flight control boards, gimbal controllers, and telemetry modules independently, preventing power distribution conflicts in multi-component systems
- RC Fixed-Wing Aircraft: Supplies regulated voltage to autopilot systems, servo controllers, and payload electronics from high-voltage battery packs used for motor ESCs
- Multi-Rotor Camera Platforms: Enables simultaneous operation of flight stabilization systems and camera stabilization gimbals with independent current budgeting for each subsystem
- RC Helicopter Systems: Provides dual outputs for swashplate servo control and tail rotor ESC, eliminating voltage regulation conflicts in complex mechanical systems
- Ground Station Equipment: Powers telemetry receivers and data logging modules from vehicle battery packs in field testing and autonomous mission scenarios
How to Use
Installation of the UBEC-8A+4A requires careful attention to polarity and current distribution planning. Connect the positive and negative input leads directly to your battery pack (2S-6S LiPo recommended), ensuring the connector type matches your battery configuration. The module will automatically regulate both output channels to 5V. Distribute your load across the two outputs based on current requirements: assign components drawing up to 8A to the primary output and those requiring up to 4A to the secondary output. Verify that the total current draw across both channels does not exceed the sum of their individual ratings (12A maximum combined), and mount the module in a location with adequate airflow to prevent thermal shutdown during sustained high-current operation.
For optimal performance, use XT60 or JST connectors rated for your expected current levels, and solder all connections with high-quality lead-free solder to ensure low-resistance joints. Install the UBEC on a vibration-dampening platform away from high-current traces and motor wiring to minimize EMI coupling into sensitive analog circuits. Monitor the module temperature during initial power-up under full load; if the module becomes too hot to touch, reduce the load or improve cooling. Always include a battery disconnect switch upstream of the UBEC to prevent parasitic drain during storage, and test the output voltages with a multimeter before connecting expensive flight control equipment.
Frequently Asked Questions
Can I use the UBEC-8A+4A with 3S LiPo batteries, and what is the minimum input voltage?
Yes, the UBEC-8A+4A is fully compatible with 3S LiPo batteries (11.1V nominal). The module accepts input voltages from 7.4V (minimum for 2S) up to 25.2V (maximum for 6S). For 3S batteries, the typical voltage range is 12.6V fully charged to 9.0V at cutoff, well within the module's operating range. The switching regulator will maintain stable 5V output across this entire input voltage window.
What is the difference between the 8A and 4A outputs, and can I use both simultaneously?
The UBEC-8A+4A features two independent regulated 5V outputs: a primary channel rated for 8 amperes continuous current and a secondary channel rated for 4 amperes continuous current. Both outputs can be used simultaneously without any interaction or voltage drop between them, as they are powered by independent internal switching stages. However, the total combined current should not exceed 12 amperes to prevent exceeding the module's total power dissipation capability. This dual-output design eliminates the need for multiple separate regulators in complex systems.
How do I know if the UBEC-8A+4A is overheating, and what should I do if it shuts down?
The UBEC-8A+4A includes a thermal shutdown feature that activates at approximately 85°C. If the module becomes too hot to touch comfortably or if power suddenly cuts off during operation, the thermal protection has likely engaged. This indicates that the total current draw exceeds the module's cooling capacity. To resolve this, reduce the load on the outputs, improve airflow around the module by mounting it away from other heat sources, or use a small adhesive heatsink on the module's top surface. Allow the module to cool for several minutes before restarting. If thermal shutdown occurs repeatedly under normal expected loads, the module may be defective and should be replaced.
Is the UBEC-8A+4A protected against reverse polarity and short circuits?
Yes, the UBEC-8A+4A includes integrated reverse-polarity protection that prevents damage if the positive and negative input leads are accidentally swapped. The module also features over-current protection on both output channels; if the current exceeds the rated limits due to a short circuit or excessive load, the internal protection circuit will shut down the output to prevent component damage. However, reverse-polarity protection is not foolproof for all scenarios, so always double-check your battery connections before powering on. Do not deliberately short the output terminals, as this may exceed the protection circuit's response time.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
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