Rechargeable battery everActive EV18500 2100mAh 3.7V with USB-C charging

everActive EV18500 2100mAh 3.7V is a rechargeable lithium cell in the 18500 size with an integrated USB-C charging port. The cell provides 2100mAh nominal capacity at 3.7V and is intended for devices and DIY applications that accept 18500-format batteries. Built-in USB-C charging eliminates the need for a separate external charger by allowing direct recharging with a USB-C cable and a suitable power source.

Advantages

The integrated USB-C charging interface simplifies recharging and reduces the number of accessories required. Compact 18500 form factor delivers a balance of capacity and size suitable for many portable devices. The 2100mAh capacity offers extended runtimes compared with lower-capacity cells of the same format. The cell’s lithium chemistry provides a stable nominal voltage of 3.7V and relatively low self-discharge for longer shelf life between uses.

Suitable for (tasks / use cases)

• Flashlights and portable lighting that accept 18500 cells
• Portable electronics and handheld devices requiring 3.7V cells
• DIY electronics, hobby projects and battery packs using 18500-format cells
• Situations where on-the-go USB-C recharging is convenient

Key specifications

• Cell format: 18500-size cylindrical lithium cell
• Nominal capacity: 2100mAh
• Nominal voltage: 3.7V
• Built-in charging port: USB-C for direct charging
• Typical applications: flashlights, portable electronics, DIY projects

How to use

Insert the everActive EV18500 cell into devices that are designed to accept 18500-size cells, observing correct polarity. To recharge, connect a USB-C cable from a compliant USB power source to the cell’s USB-C port; charging behavior follows the cell’s internal charging circuitry. Avoid inserting the cell into devices that require protected or specially matched battery packs unless the device supports single 18500 cells with built-in charging. Do not attempt to charge the cell with non-standard chargers or power sources that exceed recommended voltage or current.

Usage recommendations

Use a reputable USB power source with appropriate output (typically USB-A or USB-C power adapters that comply with standard USB specifications). Store cells in a cool, dry place and avoid prolonged exposure to high temperatures. Check device compatibility before installation and follow device manufacturer guidelines for battery use. Do not expose the cell to mechanical damage, direct flame, or liquid; recycle or dispose of according to local regulations.