2 Slot 18650 Battery Holder with Switch

The 2 Slot 18650 Battery Holder with Switch is a practical enclosure-style battery case designed to house two standard 18650 lithium-ion cells and provide a ready-to-use DC output for electronics projects. Instead of soldering directly to cells, you can insert rechargeable 18650 batteries into the spring-contact slots, close the protective cover, and use the built-in On/Off switch to control power to your circuit. The holder is commonly used as a 2-cell series holder, giving approximately 7.4V nominal output and up to 8.4V when fully charged, making it suitable for many embedded, LED and portable power applications that require higher voltage than a single Li-ion cell. The case uses a lightweight plastic body with metal spring contacts to keep the cells firmly seated. Red and black open-end wires make it easy to connect to screw terminals, DC-DC buck/boost converters, motor drivers, LED strips, Arduino-compatible boards through regulators, or custom PCBs. The integrated switch adds a clean finishing touch to battery-powered builds because the user can turn the project on or off without unplugging wires or removing batteries. This 2 x 18650 battery holder is well suited for DIY electronics, robotics prototypes, portable speakers, emergency lamps, flashlights, test jigs, IoT nodes, and rechargeable battery-powered instruments. Use only good-quality, matched 18650 Li-ion cells and ensure your project includes appropriate charging, protection, fusing or battery management circuitry where required, as the holder itself is a mechanical battery case and not a charger or BMS. In the box: 1 x 2-slot 18650 battery holder with cover, built-in On/Off switch and red/black output leads. Batteries are not included. Observe polarity markings while inserting cells and verify output voltage before connecting sensitive electronics.