Product Highlights

Universal Replacement: Fits 12V rechargeable fans like Kennedy, Defender, Sunca, Walton, and Click.
Model ID: Genuine JS-2946S-2-SMT control board (2025 Revision 0 platform).
Digital Display: Built-in 7-segment LED screen clearly shows fan speed levels and operational modes.
USB Emergency Output: Integrated standard USB Type-A port transforms your fan into a backup phone charger.
Smart Battery Protection: Features advanced overcharge and deep-discharge protection to extend 12V battery lifespan.
Dual AC/DC Switching: Automatically toggles between mains power and battery power during load shedding.

Quick Summary

Restore your emergency fan to peak performance with the JS-2946S-2-SMT 12V Rechargeable Fan Circuit Board. Engineered as a high-durability replacement motherboard, this module features a crisp digital display for easy speed monitoring, tactile push-buttons, and multiple indicator LEDs (L-CH/H-CH). With an integrated USB port for charging devices and built-in battery safety management, it is the ultimate all-in-one repair solution for modern 12V charger fans.

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JS-2946S-2-SMT 12V AC/DC Rechargeable Fan Circuit Board with LED Display

Name: JS-2946S-2-SMT 12V AC/DC Rechargeable Fan Circuit Board with LED Display - UNIVERSAL CIRCUIT SYSTEM
SKU: UCS-0430
Price: 650.00 BDT
Availability: InStock

Upgrade or repair your emergency charger fan with the high-performance JS-2946S-2-SMT 12V Rechargeable Fan Circuit Board. This premium motherboard serves as an exact factory-standard replacement module, engineered to restore full functionality to popular multi-speed portable fans. Built on the trusted 2936S/2946S structural platform, this circuit board manages AC mains conversion, optimal DC battery charging, multi-speed motor control, and user interface panels seamlessly.

Featuring a built-in digital display and multi-tier power safety protocols, this module maximizes runtime and guarantees the safe operation of your 12V emergency appliances.

🛠️ Key Technical Specifications

Model Serial: JS-2946S-2-SMT (Revision: 0)
Operating Voltage: 12V DC Native / AC Mains Compatible (via transformer input)
Core Application: Universal replacement board for 12V rechargeable standing and table fans
User Interface: Integrated 7-Segment LED Digital Display for real-time speed and status readouts
Peripheral Ports: 1 x USB Type-A output port (Emergency power bank capability)
Status Indicators: Dedicated top-facing LEDs (L-CH, H-CH, Power, Low-Voltage Alert)
Switch Interface: Tactile push-buttons for step-by-step speed adjustment, light toggles, and power control

✨ Key Features & Performance Benefits

1. Universal Brand Compatibility

Designed as a direct drop-in replacement motherboard. This control board is fully compatible with major rechargeable fan brands, including Kennedy, Defender, Sunca, Walton, and Click. It fits standard mounting spaces without requiring heavy housing modifications.

2. Clear 7-Segment Digital Display

Eliminate the guesswork of finding your operating mode. The center-mounted digital display provides immediate visual feedback on current fan speed steps, system modes, or charging diagnostic codes.

3. High-Efficiency Battery Management System (BMS)

Equipped with onboard overcharge and deep-discharge protection circuits. The board actively regulates voltage lines via L-CH (Low Charge) and H-CH (High Charge) protocols to extend the overall lifespan of your expensive 12V sealed lead-acid (SLA) or lithium iron phosphate batteries.

JS-2946S-2-SMT 12V AC/DC Rechargeable Fan Circuit Board with LED Display

4. Integrated USB Power Bank Function

Turn your emergency cooling fan into a backup utility station. The board natively features a standard 5V USB output port, allowing users to charge mobile phones, portable lights, and small electronic devices directly during power outages.

5. Intelligent Dual AC/DC Auto-Switching

The intelligent power pathway architecture handles automatic switching. When electricity is available, it routes power to run the fan while safely recharging the battery. The moment a power outage occurs, it switches instantly to battery power without any interruption in performance.

📦 Package Includes:

1 x JS-2946S-2-SMT 12V Rechargeable Fan Circuit Board

(Note: Connecting wires, transformers, batteries, and outer fan casing are sold separately).

JS-2946S-2-SMT 12V AC/DC Rechargeable Fan Circuit Board with LED Display

⚠️ Installation & Safety Guidelines

Identify Existing Pins: Before desoldering your damaged board, label your connection lines explicitly (AC input from transformer, 12V Battery Positive/Negative, Motor leads, and LED light strip lines).
Polarity Check: Ensure the 12V DC input matches the exact polarity marked on the PCB surface to avoid shorting out the control ICs.
Firm Mounting: Secure the board using standard mounting screws across the pre-drilled layout holes to prevent tactile push-button strain from flexing the PCB over time.

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