SANYO UR18650-ZM2 Li-Ion 18650 Flat-Top Rechargeable Cell 3.7 V 2420 mAh

The SANYO UR18650-ZM2 Li-Ion 18650 flat-top rechargeable cell is a cylindrical battery with a nominal voltage of 3.7 V and a rated capacity of 2420 mAh. Designed in the common 18650 form factor, this cell is intended for applications requiring compact, high-energy-density power sources. The flat-top terminal enables use in many flashlight designs, portable electronics, and custom battery packs where a non-protected, high-capacity 18650 cell is appropriate.

Advantages

This SANYO 18650 cell offers a balance of capacity and energy density suitable for general-purpose high-drain and moderate-drain devices. The flat-top design provides compatibility with holders and assemblies that accept unprotected terminals, and the standardized 18650 size simplifies integration into multi-cell packs. As a rechargeable Li‑Ion cell, it supports repeated charge/discharge cycles typical for consumer and DIY battery applications.

Suitable for

• High-intensity flashlights and torches that accept flat-top 18650 cells
• Portable electronics such as power banks, handheld devices, and some cameras
• Custom battery packs assembled for power tools, e-bikes, or DIY projects using 18650 cells
• Replacement in devices originally specified for unprotected 18650 lithium-ion cells

When it may not be suitable

This cell is a bare rechargeable Li‑Ion 18650 without an integrated protection circuit; it may not be appropriate for devices that require protected cells or batteries with built-in thermal, overcharge or over-discharge protection. It is also not suitable where a button-top terminal or a specific cell height is mandatory for mechanical fit.

Key specifications

• Cell format: 18650 cylindrical
• Nominal voltage: 3.7 V
• Rated capacity: 2420 mAh
• Terminal type: flat-top
• Chemistry: lithium-ion
• Rechargeable: yes

How to use

Use this rechargeable 18650 cell in devices and battery assemblies designed for Li‑Ion chemistry and flat-top terminals. Charge the cell with a compatible Li‑Ion charger that follows proper CC/CV charging profiles and stops at the correct charging voltage. When assembling multi-cell packs, ensure correct series/parallel arrangement, cell matching, and the inclusion of an appropriate battery management system or protection circuitry if required by the application.

What to consider before purchase

• Confirm that your device accepts flat-top 18650 cells and the cell dimensions fit the battery compartment
• Check whether your device requires protected cells or integrated protection circuitry
• Verify the required capacity and discharge current for your application to ensure adequate performance

Usage recommendations

Store and use the cell within manufacturer-recommended temperature ranges, avoid deep discharge below safe voltage levels, and use a charger designed for lithium-ion cells. For battery packs or high-current applications, include appropriate protection and balancing to maintain safety and longevity.