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18650 Battery Holder Case, Single Cell 3.7V Li-ion Battery Slot, Black Plastic Housing with Pre-Soldered Red/Black Lead Wires, DIY Power Supply Holder for Arduino ESP32 Projects
Power your DIY builds easily with this Single 18650 Battery Holder Case. It’s a simple and reliable way to mount and connect a single 18650 Li-ion battery (3.7V nominal) in electronics projects.
Power your DIY builds easily with this Single 18650 Battery Holder Case. It’s a simple and reliable way to mount and connect a single 18650 Li-ion battery (3.7V nominal) in electronics projects. The holder features strong spring contacts for a secure fit and includes pre-attached lead wires—a red positive (+) wire and black negative (–) wire—so you can connect it quickly to your circuit, switch, or power module.
This battery holder is ideal for portable projects such as Arduino/ESP32 sensor nodes, small robots, LED lighting, test rigs, and IoT devices. Use it with a proper charging/protection circuit (recommended for Li-ion safety) when building rechargeable systems.
Key Features & Benefits
- Single-Cell 18650 Fit: Designed for one standard 18650 battery
- Pre-Wired Output Leads: Convenient red/black wires reduce assembly time
- Spring-Loaded Contacts: Helps maintain consistent electrical connection
- Durable Plastic Housing: Lightweight and strong for everyday DIY use
- Versatile Power Source Mount: Perfect for portable builds and prototypes
Specifications
| Item | Details |
|---|---|
| Battery Type | 1× 18650 Li-ion cell |
| Nominal Voltage | 3.7V (single cell) |
| Output | Red (+) and Black (–) lead wires |
| Material | Black plastic |
| Mounting | Holder body with contact springs |
Note: Battery not included. For rechargeable projects, use a Li-ion protection/charging module (e.g., TP4056 with protection) to prevent overcharge/over-discharge.
Common Applications
- Arduino / ESP32 portable power projects
- IoT sensor nodes and wireless modules
- LED strips, small lamps, flashlights
- Robotics prototypes and test circuits
- Battery-powered DIY gadgets
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