18650 Battery Holder - Single Cell Cylindrical Holder for DIY Electronics
18650 Battery Holder - Single Cell 3.7V Li-ion Battery Holder
The 18650 battery holder is a single-cell cylindrical holder designed for standard 18650 lithium-ion batteries. It provides a secure connection for powering DIY electronics, robotics projects, and portable devices. This holder accepts unprotected and protected 18650 cells, offering reliable contact for your battery-powered applications.
Key Specifications
| Specification | Value |
|---|---|
| Battery Type | 1 x 18650 (cylindrical, 18mm x 65mm) |
| Material | ABS plastic body with nickel-plated spring contacts |
| Contact Type | Spring-loaded negative, solid positive terminal |
| Wire Leads | 15cm (6 inch) 22AWG red and black wires |
| Dimensions | 80mm x 22mm x 22mm (L x W x H) |
What You Can Build With This
- Portable USB charger or power bank
- LED flashlight or camping lantern
- Arduino-based wireless sensor node
- DIY Bluetooth speaker
Compatibility
This holder works with standard 18650 cells (3.7V nominal). It connects easily to microcontrollers like Arduino, ESP32, and Raspberry Pi Pico via the included wires. For regulated 5V output, pair with a boost converter module; for charging, use a TP4056 charging board.
Wiring Notes
Connect the red wire to the positive terminal and black to negative. Ensure correct polarity to prevent damage. If using with a boost converter, solder directly or use a connector. For projects requiring stable power, add a 100μF capacitor across the output.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with protected 18650 batteries?
Yes, the holder accommodates both protected (button-top) and unprotected (flat-top) 18650 cells. Protected cells may fit snugly due to increased length.
Can I recharge the battery while it's in the holder?
Yes, you can recharge the battery using an external charger module like TP4056. Connect the charger's output to the holder's wires, ensuring polarity matches.
Does this holder have a built-in protection circuit?
No, this is a basic holder without protection. Add your own under-voltage cutoff or use a protected 18650 cell for safety.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items