Adafruit High Current Inductive Charge Kit - 5V @ 1.3A max

Inductive charging delivers power without a wire connection, optimized for seamless operation in compact spaces. It's akin to how a rechargeable electric toothbrush powers up. This charger set achieves a 5V DC output from the secondary coil when supplied with 9V to 12V DC on the primary side.

Features include the capability to sustain ~1000mA current with coils spaced 2-3 mm apart, diminishing to 500mA at a 10 mm gap. The setup is flexible, accommodating materials like air, wood, or glass between coils without affecting performance, as long as they remain coaxial.

Although it inherently offers lower efficiency at 40%, requiring ~150mA for a 5V 100mA output, this basic module is suitable for low-power projects. The transmitter board, powered by 9V, features two chips, while the output board connects to your powered device.