Product Description
The Universal AC/DC Rechargeable Emergency Fan Circuit Board (HD-29806H-1 / KN-2936S SMT Series) is a heavy-duty, high-performance replacement motherboard designed for portable emergency cooling fans. Engineered as a direct drop-in repair module for premium brands like Defender, Sunca, Kennede, and Click, this board functions as the central controller for automated power routing, multi-speed management, and battery protection.
Key Features:
- Smart Dual-Source Switching: Seamlessly toggles from AC grid power to battery backup during blackouts with zero delay.
- 7-Segment Digital Display: Bright numeric LED screen provides immediate visual feedback on fan speed levels and status.
- Advanced Battery Protection: Onboard overcharge and over-discharge cutoff circuits protect your 6V/12V batteries from damage, extending their lifespan.
- Integrated Emergency USB Port: Features a 5V USB output terminal that turns your fan into a structural power bank station to charge mobile devices.
- Multi-Functional Array: Includes physical tact switches for multi-step fan speeds, standalone LED indicator lights, and dedicated output channels for emergency lighting.
Quick Specifications:
- Compatibility: 12-inch to 16-inch AC/DC Rechargeable Fans
- Battery Input: 6V / 12V Sealed Lead-Acid (SLA) or Lithium packs [1, 2]
- Output Interface: DC Motor wire leads, LED light panel terminal, and USB port [1, 2]
If you are replacing a faulty controller on your unit, please share your fan’s model brand or battery voltage (6V or 12V) so I can provide the correct wiring pinout guide!
