Compact and portable design for easy carrying and simple use Goldplated 18650 battery box with 3slot or 4slot battery holder options Goldplated contact surfaces provide reliable connectivity and corrosion resistance Battery holder box can be connected in series or parallel to configure the pack for higher voltage or greater capacity Temperature note: The product is rated for use up to 235 C. If exposed to 235 C, it will bubble and cannot be reflow soldered Designed for 18650 cells, offering a convenient, modular solution for power packs Clear integration: suitable for enclosure mounting and easy integration into your projects 23 practical use scenarios DIY portable power bank or backup power supply: combine 3 or 418650 cells in series or parallel to match your device's voltage and capacity needs for field use or emergency charging Modular power solutions for robotics or sensors: create lightweight, interchangeable pack modules that can be expanded or reconfigured as your project grows LED lighting and temporary power setups: build compact power packs for portable lighting, displays, or testing rigs where reliable, lowresistance connections are important