Wireless Charging Module High Output Coil 5V, 2A

Detailed Specifications

• Input Voltage (Transmitter): 9~12V
• Output Voltage (Receiver): 5V DC
• Maximum Output Current: 2A (Optimal at closer distances)
• Transmission Distance: 2mm to 8mm (Depends on intermediate materials)
• Transmitter Coil Dimensions: ~43mm (Outer Diameter)
• Receiver Coil Dimensions: ~43mm (Outer Diameter)
• Operating Frequency: 110-205 kHz
• Conversion Efficiency: ~75% (Maximum)
• Protection Features: Foreign Object Detection (FOD), Over-temperature protection

Applications

• Hermetically Sealed IoT: Build waterproof and dustproof outdoor sensors that never need to be opened for charging.
• Smart Furniture Integration: Embed chargers directly into wooden desks or 3D-printed nightstands.
• Autonomous Robotics: Create drive-over charging docks for your Arduino or ESP32-based rovers.
• Wearable Tech: Design custom cosplay props or wearables that snap onto a magnetic charging base.

Unlock New Capabilities

• Past Projects: If you've mastered basic battery-powered projects using standard micro-USB or Type-C breakout boards, you know the pain of routing cables.
• The Upgrade: This module unlocks the ability to completely encapsulate your electronics. By transmitting power inductively, you can cast your circuits in resin or seal them in weatherproof IP68 enclosures.
• Effort Level: Intermediate. Requires basic soldering to attach power leads to the transmitter and load to the receiver.

Virtual Technician & Wiring Guide

• ⚠️ Safety Warning: Ensure your power supply can comfortably provide at least 5V 2.5A to account for inductive transmission losses. Do NOT place metal objects between the transmitter and receiver coils as they will rapidly heat up.
• Transmitter Board: Connect VCC to your 5V Power Supply, connect GND to Power Supply Ground.
• Receiver Board: Connect VOUT (or +) to your device's 5V input (e.g., 5V pin on Arduino/ESP32), connect GND (or -) to your device's Ground.

Package Includes:

• 1 x Wireless Charging Module High Output Coil( 5V, 2A)

Frequently Asked Questions (FAQ)

• What is the maximum distance between the transmitter and receiver coils?
  The optimal distance is between 2mm and 8mm. Distances beyond 8mm will significantly drop the output current and efficiency.
• Can I power this module with a 3.3V supply?
  No, the transmitter circuit requires a stable 5V DC input to generate the correct inductive field.
• Will this charge my smartphone?
  While it outputs 5V, it is not a standard Qi-certified charger. It is designed for raw 5V power transmission to DIY circuits, not for standard consumer phones.
• Can I put a piece of plastic between the coils?
  Yes, non-metallic materials like plastic, wood, or glass work perfectly as long as they are within the 2-8mm thickness range.
• What happens if I put metal between the coils?
  The metal will absorb the inductive energy, causing rapid heating (eddy currents). The module's protection circuit may trigger, but you should never intentionally place metal between them.
• Can I connect the receiver directly to a 3.7V LiPo battery?
  No. The receiver outputs 5V. You must connect the receiver to a Lithium Battery Charger module (like a TP4056) to safely charge a LiPo battery.
• Does the 2A output stay constant at all distances?
  No. To achieve the full 2A output, the coils must be very close (usually 2-3mm) and perfectly aligned. Current drops as distance increases.
• Can I use multiple receivers with one transmitter?
  No, these are paired 1-to-1. Attempting to draw power with multiple receivers will overload the transmitter or drop the voltage unacceptably.
• Why is my receiver getting warm during operation?
  Inductive charging is inherently lossy (around 75% efficiency). The remaining 25% of energy is dissipated as heat. Mild warming is completely normal.
• Do the coils need to be perfectly centered?
  Yes, for maximum efficiency and current output, the concentric circles of both coils must be perfectly aligned on the Z-axis.
• Can I cut or bend the copper coils?
  Absolutely not. Altering the shape, cutting, or bending the coils changes their inductance, which will break the resonance frequency and ruin the module.
• Is the output voltage strictly 5V, or does it fluctuate?
  The receiver has onboard regulation to output a stable 5V, provided the transmitter is receiving adequate power and the coils are within range.
• How much current does the transmitter draw with no receiver present?
  The standby current is generally very low (a few milliamps) as the transmitter pings for a receiver before fully activating the magnetic field.
• Can I power an ESP32 or Raspberry Pi Pico with this?
  Yes, the 5V output is perfect for powering the 5V/VBUS pins of ESP32 boards, Arduinos, and standard microcontroller dev boards.
• What wire gauge should I use to connect the transmitter?
  Since the module can pull upwards of 2A-2.5A from your power supply, use at least 22 AWG or thicker wire to prevent voltage drop.