rechargeable charger fan circuit board (Model: KN-2926 / HD-2928)
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৳ 450.00৳ 500.00 (-10%)
This Universal AC/DC Rechargeable Charger Fan Control Circuit Board (Model: KN-2926 / HD-2928) is a direct replacement module designed for 6V/12V emergency portable fans. It seamlessly manages dual-mode AC charging and DC battery operation to ensure uninterrupted cooling during power outages.
⚡ Key Features & Utility
- Battery Protection: Prevents overcharging and deep discharge to extend lead-acid battery lifespans.
- Integrated Switches: Onboard slide controls for multi-speed fan regulation and LED light switching.
- Dual Status LEDs: Built-in green and red indicators offer clear visual cues for charging and power status.
- Universal Fitting: Fully compatible with emergency fan brands like Defender, Sunca, and Walton.
If you are buying or installing this replacement part, let me know your fan’s battery voltage (6V or 12V) or if you need help identifying the wiring connection spots on the board.
rechargeable charger fan circuit board (Model: KN-2926 / HD-2928)
The highlighted item is a Universal AC/DC Rechargeable Charger Fan Control Circuit Board (Model: KN-2926 / HD-2928-I-AI), engineered as a drop-in replacement module to manage power regulation, battery charging, motor speeds, and auxiliary lighting arrays for multi-functional portable cooling appliances.
rechargeable charger fan circuit board (Model: KN-2926 / HD-2928)
📋 Overview & Architectural Layout
This fully integrated printed circuit board (PCB) acts as the central control processor for high-performance emergency fans. Built on a durable, heat-resistant copper-clad substrate, it hosts a robust layout of discrete passive components, power transistors, mechanical sliders, and visual telemetry indicators. It bridges internal energy reservoirs (typically 6V or 12V lead-acid batteries) with primary AC mains to ensure continuous operation during grid power failure. [1, 2, 3]
➡️ Primary Electrical Features
- Dual AC/DC Input Pipeline: Built-in rectifying diodes seamlessly step down and convert standard AC mains input power to safe low-voltage DC to power internal configurations while simultaneously floating energy to the storage cells. [1, 2]
- Intelligent Battery Management System (BMS): Equipped with dedicated overcharge and over-discharge threshold cut-offs. This critical architecture prevents structural swelling, overheating, and premature capacity decay of attached gel-cell batteries. [1, 2, 3]
- Multi-Tiered Speed Regulation: Integrates step-down biasing loops connected to heavy-duty onboard slide switches. This grants physical speed modulation (Low/Medium/High) across traditional brush or brushless DC fan motors. [1, 2]
- Integrated Emergency Light Driver: Hosts an independent switching lane calibrated for standard multi-LED lighting arrays (supporting layouts up to 8-LED arrays) to deliver ambient power-loss illumination. [1]
rechargeable charger fan circuit board (Model: KN-2926 / HD-2928)
➡️ Component Identification & On-Board Diagnostics
- Dual LED Telemetry Indicators: Features dedicated green and red pass-through status light-emitting diodes to provide real-time updates regarding power connectivity and live charging progress.
- On-Board Heavy-Duty Sliders: Micro-switches pre-soldered to the interface regulate the fan velocity configurations and separate multi-stage emergency lighting behaviors without requiring secondary off-board control lines.
- High-Capacity Power Reservoirs: Rows of aluminum electrolytic capacitors filter low-frequency ripples and isolate internal micro-circuitry components from power surges or voltage fluctuation hazards.
- Integrated Fuse & Safety Diodes: In-line blocking diodes isolate the power paths to eliminate dangerous reverse-polarity current flow in the event a battery is wired upside down. [1]
➡️ Broad Product Specifications
| Parameter | Standard Details |
|---|---|
| Model Variants | KN-2926 / HD-2928-I-AI / HD-2926-SMT |
| Input Infrastructure | Dual Mode: AC Main Lines Charging / DC Source Input |
| Voltage Configurations | Available in optimized 6V DC or high-velocity 12V DC profiles |
| Output Rails | Dedicated Fan Motor Line + Auxiliary Light Panel Output |
| Fan Blade Scaling | Optimized to drive 12-inch up to 16-inch high-RPM cooling assemblies |
| Safety Integration | Reverse-polarity protection, over-current logic, battery overcharge clamp |
The highlighted item is a Universal AC/DC Rechargeable Charger Fan Control Circuit Board (Model: KN-2926 / HD-2928-I-AI), engineered as a drop-in replacement module to manage power regulation, battery charging, motor speeds, and auxiliary lighting arrays for multi-functional portable cooling appliances.
rechargeable charger fan circuit board (Model: KN-2926 / HD-2928)
📋 Overview & Architectural Layout
This fully integrated printed circuit board (PCB) acts as the central control processor for high-performance emergency fans. Built on a durable, heat-resistant copper-clad substrate, it hosts a robust layout of discrete passive components, power transistors, mechanical sliders, and visual telemetry indicators. It bridges internal energy reservoirs (typically 6V or 12V lead-acid batteries) with primary AC mains to ensure continuous operation during grid power failure. [1, 2, 3]
➡️ Primary Electrical Features
- Dual AC/DC Input Pipeline: Built-in rectifying diodes seamlessly step down and convert standard AC mains input power to safe low-voltage DC to power internal configurations while simultaneously floating energy to the storage cells. [1, 2]
- Intelligent Battery Management System (BMS): Equipped with dedicated overcharge and over-discharge threshold cut-offs. This critical architecture prevents structural swelling, overheating, and premature capacity decay of attached gel-cell batteries. [1, 2, 3]
- Multi-Tiered Speed Regulation: Integrates step-down biasing loops connected to heavy-duty onboard slide switches. This grants physical speed modulation (Low/Medium/High) across traditional brush or brushless DC fan motors. [1, 2]
- Integrated Emergency Light Driver: Hosts an independent switching lane calibrated for standard multi-LED lighting arrays (supporting layouts up to 8-LED arrays) to deliver ambient power-loss illumination. [1]
➡️ Universal Replacement Compatibility
This universal control board is a direct replacement option across a broad index of popular regional emergency appliance brands. It retrofits comfortably into chassis architectures from brands like Defender, Sunca, Walton, Kennedy, and Midea. It is ideal for field technicians and DIY electronics enthusiasts dealing with failed charging stages or burned-out control switches. [1, 2]
If you are currently wiring a replacement or troubleshooting a specific problem with this PCB module, let me know the exact voltage of your battery (6V or 12V) or any specific error symptoms (e.g., fan doesn’t spin on battery power, indicator lights don’t illuminate) so I can provide precise connection advice or diagnostics.
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