26650 Batteries | Reliable High-Capacity Lithium-Ion Cells

A 26650 battery is a high-performance lithium-ion rechargeable cell designed for enhanced capacity, power output, and longer cycle life. With a standard size of 26mm in diameter and 65mm in length, it surpasses the 18650 and 21700 cells in both runtime and energy storage, making it ideal for industrial applications, high-drain power tools, electric vehicles, and large-scale battery packs.

Technical Specifications

• Voltage: 3.6V – 3.7V nominal, full charge at 4.2V, and discharge cutoff at 2.5V – 3.0V.

• Capacity Range: Typically between 4000mAh and 6000mAh, depending on chemistry and application.

• Battery Chemistry Types:

  • Lithium Cobalt Oxide (LiCoO₂ - LCO): Maximized energy storage for extended runtime.
  • Lithium Manganese Oxide (LiMn₂O₄ - LMO): Enhanced safety and thermal stability.
  • Lithium Nickel Manganese Cobalt Oxide (LiNiMnCoO₂ - NMC): A balance of power, efficiency, and longevity, commonly used in EVs and power tools.
  • Lithium Iron Phosphate (LiFePO₄ - LFP): Exceptional thermal stability and cycle life, with a lower nominal voltage of 3.2V.

• Discharge Rate (CDR): Certain high-drain 26650 cells offer continuous discharge rates of 30A – 40A, making them ideal for power-intensive applications.

• Cycle Life: Can exceed 500 to 2000 charge cycles, depending on proper maintenance and chemistry type.

Protected vs. Unprotected 26650 Cells

• Protected 26650 Batteries: Feature an integrated protection circuit to safeguard against overvoltage, short circuits, and deep discharge, making them safer for standalone use.
• Unprotected 26650 Batteries: Best suited for custom battery packs and industrial applications with external Battery Management Systems (BMS).

Industry Applications for 26650 Batteries

✔ Professional-Grade Flashlights & Tactical Gear: Provides extended runtime and high-drain power output.
✔ Cordless Power Tools & Industrial Equipment: Integrated into high-performance, rechargeable power tools.
✔ Electric Vehicles & E-Bike Battery Modules: Used in high-efficiency energy storage for EVs and hybrid systems.
✔ Renewable Energy & Off-Grid Storage: Commonly found in solar power systems and large-scale UPS battery banks.
✔ Medical & Aerospace Technology: Used in precision diagnostic tools, aviation power modules, and high-endurance electronics.

Choosing the Right 26650 Battery

🔹 Voltage Compatibility: Confirm that your device supports 3.6V or 3.7V, as some applications may require 3.2V LiFePO₄ cells.
🔹 High-Drain vs. Standard Cells: Devices requiring continuous high power output should use high-CDR 26650 cells.
🔹 Flat Top vs. Button Top: Ensure compatibility with your device’s battery compartment.

At IMR Batteries, we provide high-performance 26650 lithium-ion cells for demanding industrial, commercial, and consumer applications, ensuring safety, reliability, and long-term efficiency. Browse our selection today for the best battery solutions!