Used 500mAh 3.7V 18650 Lithium-Ion Cell – Rechargeable Cylindrical Battery for DIY Electronics, Robotics & Arduino Projects in Pakistan

Overview

Looking for an economical, standard-sized power source for prototyping, testing, or low-drain electronics? The Used 500mAh 3.7V 18650 Lithium-Ion Cell provides a reliable and budget-friendly alternative to brand-new cells for non-critical applications. Built in the universally recognized 18650 cylindrical form factor, these tested cells fit effortlessly into standard battery holders, spring compartments, and plastic bracket mounts. Whether you are building experimental circuits, powering small microcontrollers, or teaching robotics basics, these cells offer dependable rechargeable energy.

Key Features

• Standard 18650 Form Factor: Measures approximately 18mm in diameter and 65mm in length, ensuring seamless compatibility with standard single or multi-cell holders.

• Rechargeable Li-ion Chemistry: Stable 3.7V nominal voltage (peaking at 4.2V when fully charged) allowing multiple charge-discharge cycles.

• Cost-Effective Prototyping: An economical choice for student labs, testing new circuit designs, and learning embedded systems without investing in high-capacity brand-new cells.

• Eco-Friendly Reuse: Repurposed and quality-tested to give functional cells a second life in low-power electronics.

Technical Specifications

Common Applications

• Robotics & Microcontrollers: Excellent for powering entry-level Arduino, ESP32, or sensor nodes requiring compact DC power.

• DIY Electronics Testing: Ideal for bench testing prototypes where high capacity is not a primary requirement.

• Low-Drain Gadgets: Suitable for small emergency lights, basic circuit experiments, and educational science kits.

• Note to customers: These are economical, tested used cells best suited for low-drain hobbyist projects and prototyping, not recommended for high-current loads like e-bikes or high-power flashlights.