A compact and durable holder designed for a single 18650 lithium-ion cell, featuring a built-in ON/OFF switch for convenient power control. Ideal for DIY electronics, IoT projects, prototyping, LED strips, Arduino/ESP32 modules, and portable devices. The holder includes clearly marked polarity, secure cell retention, and an option to solder header or wires. Perfect for powering battery-based projects without needing a separate external switch.

NOTE: It is just a battery holder. It does not have the charging/discharging protection hardware. Please use appropriate battery charging module for safely using the battery holder.