The 18650 Battery Holder (1-Slot) gives a secure and reliable way to mount a single 18650 lithium-ion battery. It fits any standard 3.7V cell and provides safe contact points for both positive and negative terminals. The design uses a strong ABS plastic body, which resists heat and mechanical stress. This keeps the battery safe inside the case, even during regular use or movement.
The spring-loaded contacts grip the cell tightly. They use nickel-plated steel for excellent conductivity and corrosion resistance. This ensures a stable power supply for your project. Two pre-soldered wires extend from the holder: red for positive (+) and black for negative (–). This makes connections fast and simple without extra soldering or clips.
You can use this holder in many projects. It works well for Arduino boards, ESP32, Raspberry Pi, and other microcontroller systems. It powers LEDs, sensors, IoT devices, and small robots. Makers often use it in portable projects, flashlights, solar-powered kits, or backup circuits. Because of its compact size, you can place it inside enclosures, 3D-printed cases, or breadboard setups with ease.
Key Features
Holds one standard 18650 lithium-ion cell (3.7V nominal)
Compact ABS plastic body for durability and safety
Spring-loaded nickel-plated steel contacts for strong grip
Red and black output wires for quick polarity check
Easy integration with Arduino, ESP32, and Raspberry Pi
Lightweight and portable for small enclosures
Reusable with rechargeable 18650 batteries
Product Specifications
| Specification | Details |
|---|---|
| Battery Type | 18650 Lithium-ion |
| Slot Capacity | 1 Cell |
| Nominal Voltage | 3.7V |
| Max Voltage | 4.2V |
| Material | ABS Plastic ‘ |
| Contacts | Nickel-plated Steel |
| Output Wires | Red = Positive, Black = Negative |
| Current Range | Up to 5A (depending on battery) |
| Dimensions | Compact, breadboard-friendly |
| Applications | IoT, Robotics, Portable Electronics |
Wire Configuration
| Wire Color | Polarity | Use |
|---|---|---|
| Red | Positive | Battery + |
| Black | Negative | Battery – |
Applications
Arduino and ESP32 projects
IoT and smart devices
Robotics and automation kits
Flashlights and LED projects
Portable test equipment
Power banks and backup supply systems
DIY electronics and prototypes
