26650 Batteries

36 products

📖 Click to view full specifications, comparison & safety guide

26650 Batteries – Large-Format High-Capacity Cylindrical Cells, Combining Robust Power with Extended Runtime

Welcome to our 26650 Batteries collection. The 26650 lithium-ion cell (26mm diameter × 65mm length) is the "power athlete" of the cylindrical battery family. Compared to 18650 and 21700, the 26650 features a larger volume and electrode area, delivering higher single-cell capacity, stronger continuous discharge capability, and superior thermal management. Mainstream 26650 capacities range from 3000mAh to 5500mAh, with continuous discharge currents from 10A to 35A. With its robust build and ample energy reserves, the 26650 cell is widely deployed in high-power flashlights, professional power tools, portable power stations, medical devices, industrial AGVs, and solar energy storage systems.

Core Advantages of 26650 Batteries

Massive Single-Cell Capacity: Typical capacities range from 4000mAh to 5500mAh, with flagship models exceeding 5500mAh. A single cell delivers extended runtime for power-hungry devices, reducing the need for parallel configurations.
Robust Discharge Capability: High-drain 26650 cells support 20A–35A continuous discharge with internal resistance as low as 10mΩ–20mΩ, ideal for high-power flashlights, power tools, and demanding industrial loads.
Superior Thermal Management: Larger surface area and internal volume enhance heat dissipation, minimizing temperature rise under heavy current and improving system-level safety.
High Mechanical Strength: Rugged steel casing provides excellent impact and crush resistance, suitable for harsh environments.
Improved Pack Efficiency: For a given capacity requirement, fewer parallel cells are needed—simplifying welding, reducing BMS complexity, and enhancing pack reliability.
Diverse Chemistries: Available in high-capacity NMC, high-drain INR, and inherently safe LiFePO₄ formulations to meet varying safety and performance requirements.

26650 Battery Category Guide

Category	Positioning	Typical Capacity / Current	Best For
NMC / INR 26650	High energy / high power NMC chemistry	4000mAh–5500mAh / 10A–35A	High-lumen flashlights, power tools, portable power, medical devices
Protected 26650	Built-in overcharge/discharge/short protection	4000mAh–5500mAh / 8A–10A	Consumer flashlights, headlamps, DIY power banks
IFR26650 / LiFePO₄ \| 3.2V	Inherently safe, ultra-long cycle life	2500mAh–3500mAh / 3A–10A	Solar storage, UPS, emergency lighting, 12V lead-acid replacement

26650 vs. 21700 vs. 18650 – Key Specification Comparison

Parameter	26650	21700	18650
Dimensions	26mm × 65mm	21mm × 70mm	18mm × 65mm
Volume (approx.)	34.5 cm³	24.2 cm³	16.5 cm³
Typical Capacity Range	3000mAh – 5500mAh	3000mAh – 5800mAh	1500mAh – 3500mAh
Mainstream High-Capacity Models	5000mAh–5500mAh	5000mAh	3500mAh
High-Drain Continuous Discharge	20A – 35A	30A – 45A	20A – 35A
Internal Resistance (Power Cells)	10mΩ – 20mΩ	8mΩ – 15mΩ	10mΩ – 15mΩ
Key Strengths	High single-cell capacity, excellent heat dissipation, robust	Optimal balance of energy density and power	Highest standardization, lowest cost

Popular 26650 Cell Models – Quick Reference

Model	Brand	Chemistry	Nominal Capacity	Continuous Discharge	Positioning
INR26650-50A	Samsung	NMC	5000mAh	20A–25A	High capacity with solid drain; top choice for flashlights & tools
INR26650-40T	Samsung	NMC	4000mAh	35A	Ultra-high drain; professional power tools
NCR26650A	Panasonic	NCA	5000mAh	10A	High reliability; industrial & medical devices
NCR26650B	Panasonic	NCA	3400mAh	10A	Classic long-life model
Molicel P26A	Molicel	NMC	2600mAh	35A	Extreme drain; competition-grade flashlights
EVE 26650-50E	EVE	NMC	5000mAh	10A–15A	Cost-effective storage & consumer electronics
IFR26650-30A	EVE / Others	LiFePO₄	3000mAh	10A	LiFePO₄; solar / medical applications
IFR26650-35A	EVE / Others	LiFePO₄	3500mAh	10A	High-capacity LiFePO₄; 12V lead-acid replacement
Protected 26650	Custom	NMC + PCB	4000–5000mAh	8A–10A	Protected; consumer flashlights

Typical Specifications Range (26650)

Parameter	Typical Range
Nominal Voltage	3.2V (LiFePO₄) / 3.6V–3.7V (NMC)
Full Charge Voltage	3.65V (LiFePO₄) / 4.2V (NMC)
Capacity Range	2500mAh – 5500mAh
Continuous Discharge Current	3A – 35A (model dependent)
Internal Resistance	10mΩ – 40mΩ
Cycle Life	500 – 4000+ cycles (chemistry dependent)
Operating Temperature	Charge: 0°C~45°C / Discharge: -20°C~60°C
Dimensions	Diameter 26.0mm–26.5mm × Length 65.0mm–70.0mm (protected)

Typical Applications

Application	Recommended Category	Suggested Models
High-lumen flashlights / searchlights	NMC 26650 / Protected 26650	Samsung 50A, Panasonic NCR26650A
Professional power tools (drills, saws)	NMC 26650 (High Drain)	Samsung 40T, Molicel P26A
Portable power stations	NMC 26650	EVE 50E, Samsung 50A
Medical devices / patient monitors	NMC 26650 / LiFePO₄	Panasonic NCR26650A, IFR26650-30A
Solar street lights / off-grid storage	IFR26650 / LiFePO₄	IFR26650-30A, 35A
Industrial AGVs / mobile robots	NMC 26650 / LiFePO₄	Samsung 50A, IFR26650
Emergency lighting / exit signs	IFR26650 / LiFePO₄	IFR26650-30A
DIY high-capacity power banks	Protected 26650 / NMC 26650	Protected 26650, Samsung 50A

How to Choose the Right 26650 Battery?

Your Requirement	Recommended Category	Suggested Model
I need maximum runtime for flashlights or power stations	→ NMC 26650 (High-Capacity)	Samsung 50A, EVE 50E
I need high power output for power tools	→ NMC 26650 (High-Drain)	Samsung 40T, Molicel P26A
I want built-in protection for worry-free use	→ Protected 26650	Various protected 26650 models
Safety is critical; for solar or medical applications	→ IFR26650 / LiFePO₄ \| 3.2V	IFR26650-30A/35A
I need bulk quantities or custom packs	Contact our sales team	—

⚠️ 26650 Battery Safety Guidelines

Voltage Platform Awareness: 3.2V LiFePO₄ and 3.7V NMC cells cannot be mixed or charged with the same charger. Always verify device and charger compatibility.
Dimensional Compatibility: 26650 cells are larger in diameter and length than 18650/21700. Measure your device's battery compartment before purchase. Protected 26650 cells are 3–5mm longer.
Use a Quality Charger: Always use a reliable charger designed for Li-ion or LiFePO₄ chemistry.
Avoid Short Circuits & Overheating: Do not short the terminals. Keep away from heat, moisture, and metal objects.
Discontinue if Damaged: Stop using cells with torn wraps, dents, or leakage. Recycle responsibly.

Why Choose Our 26650 Batteries?

Genuine Grade-A Cells: Direct sourcing from Samsung, Panasonic, Molicel, EVE, and other Tier-1 manufacturers. 100% authentic—no recycled or counterfeit cells.
Fully Tested & Matched: Every batch undergoes capacity grading, IR testing, and voltage sorting. Industrial-grade matching services available.
Complete Portfolio: Covers NMC high-capacity/high-drain, protected, and LiFePO₄ series—one-stop for all 26650 needs.
Flexible Purchasing: Single-cell retail, multi-pack discounts, tiered bulk pricing, and custom series/parallel pack assembly.
Certified & Documented: UN38.3, MSDS, CE, RoHS documentation provided for seamless international shipping.
Expert Technical Support: Guidance on cell selection, pack design, BMS integration, and after-sales service.

👇👇👇 Explore our NMC 26650, Protected 26650, and IFR26650 / LiFePO₄ | 3.2V collections using the subcategory navigation below. For volume quotes or custom pack solutions, please contact our engineering team.

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