cairo electronics

EVE ICR18650 Li-ion Rechargeable 18650 Battery 3.6V 14.3A 2550mAh ORIGINAL (NEW)

SKU: PRO01136

EVE ICR18650 Li-ion Rechargeable 18650 Battery 3.6V 14.3A 2550mAh ORIGINAL (NEW)

-20%

LM741 Op-Amp IC | Pro Tronix

ICs

SKU: PRO00235

Classic LM741 single operational amplifier IC in DIP-8 through-hole package. Perfect for analog signal processing, educational circuits, and linear amplification!

-4%

18650 3.7V 3500mAh Li-Ion Battery Recycled | Pro Tronix

SKU: PRO00646

Recycled and tested 18650 3.7V 3500mAh lithium-ion battery cell. Cost-effective, high-capacity power source for custom battery packs, flashlights, and electronics projects!

-9%

18650 3.7V 2500mAh Li-Ion Battery | Pro Tronix

SKU: PRO00644

18650 3.7V 2500mAh lithium-ion battery cell. Reliable power source for custom electronics, portable devices, and DIY power projects!

-13%

18650 3.7V 2000mAh Li-Ion Battery | Pro Tronix

SKU: PRO00643

18650 3.7V 2000mAh lithium-ion battery cell. Cost-effective power source for DIY electronics, portable devices, and LED lighting!

-17%

18650 3.7V 1500mAh Li-Ion Battery | Pro Tronix

SKU: PRO00642

18650 3.7V 1500mAh lithium-ion battery cell. Cost-effective power source for DIY electronics, portable devices, and flashlights!

-12%

18650 3.7V 1000mAh Li-Ion Battery | Pro Tronix

SKU: PRO00641

18650 3.7V 1000mAh lithium-ion battery cell. Cost-effective power source for low-current electronics, sensors, and prototyping test rigs!

-9%

18650 3.7V 500mAh Li-Ion Battery | Pro Tronix

SKU: PRO00640

18650 3.7V 500mAh lithium-ion battery cell. Specialized low-capacity power source for educational electronics, sensors, and prototyping test rigs!

-1% Sold out

LP16-24200 LiFePO4 25.6V 200Ah Energy Storage Battery | Pro Tronix

Battery & charger

SKU: PRO01145

LP16-24200 LiFePO4 25.6V 200Ah 5.12kWh industrial battery with 6000+ cycles. Flexible wall, rack, or stack mounting for solar and backup power systems!

Compact blue printed circuit board showcasing an input DC barrel jack and terminal block on the left, an input capacitor, step-down conversion circuitry with a 330 power inductor in the center, and a female USB port next to an output terminal block on the right.

-10% Sold out

24V/12V to 5V 5A DC-DC Buck Converter Module with USB & DC Jack | Pro Tronix

Sensors & Modules

SKU: PRO00538

High-efficiency, synchronous 24V/12V to 5V 5A DC-DC step-down power module. Equipped with an onboard USB Type-A port, output screw terminals, an input DC barrel jack, and reverse-polarity protection. Ideal for powering Raspberry Pi setups, charging mobile electronics, and driving high-current robotics projects.

-8% Sold out

18650 3.7V 3000mAh Li-Ion Battery | Pro Tronix

SKU: PRO00645

18650 3.7V 3000mAh lithium-ion battery cell. High-capacity power source for custom power banks, IoT sensor nodes, and extended-runtime electronics!

Ultra-compact blue GY-273 printed circuit board showing a tiny 3-axis magnetometer chip, decoupling capacitors, pulling resistors, and 5 parallel solder pads for pin headers.

-9% Sold out

GY-273 HMC5883L 3-Axis Digital Compass Magnetometer Module | Pro Tronix

Sensors & Modules

SKU: PRO00459

High-precision GY-273 3-axis digital compass and magnetometer module. Operating on a wide 3.0V to 5.0V DC input, it communicates seamlessly over a standard I2C interface to output 12-bit heading and magnetic field strength values. An essential sensor for robot navigation, DIY digital compasses, and metal detection.