26700 Batteries

6 products

📖 Click to view full specifications, comparison & safety guide

26700 Batteries – Oversized High-Power Cylindrical Cells, Maximum Capacity and Current in a Sturdy Format

Welcome to our 26700 Batteries collection. The 26700 lithium-ion cell (approx. 26mm diameter × 70mm length) is a large-format cylindrical power source that builds on the established 26650 standard by stretching the can to 70mm. This extra 5mm of length, combined with the generous 26mm girth, enables a massive increase in active material loading compared to 18650 or 21700 cells. Mainstream 26700 capacities range from 3000mAh to 5500mAh, with high-drain variants comfortably delivering 30A–40A continuous discharge. With greater energy reserves, lower internal resistance, and excellent thermal dissipation, 26700 cells are the definitive choice for high-output LED flashlights, heavy-duty power tools, portable power stations, electric two-wheelers, and marine or off-grid energy storage where sheer capacity and power are non-negotiable.

Core Advantages of 26700 Batteries

Exceptional Capacity: Typical capacities of 3000mAh–5500mAh — a 50%–100% increase over standard 18650 cells and a meaningful step up from most 21700 offerings. Ideal for long‑runtime flashlights and energy‑dense storage packs.
Uncompromising High‑Drain Performance: High‑drain 26700 cells deliver a true 30A–40A continuous discharge with minimal voltage sag, making them perfect for hot‑rod FET‑driven flashlights, cordless power tools, and high‑wattage vaping devices.
Ultra‑Low Internal Resistance: Power‑oriented 26700 cells feature IR as low as 8mΩ–14mΩ. The fat 26mm diameter shortens the ionic pathway, reducing resistive heating and sustaining stable voltage under extreme loads.
Superior Thermal Behaviour: The substantial metal can and large internal volume dissipate heat effectively, keeping cells cooler during heavy discharge and extending both cycle life and safety margins.
Robust Mechanical Strength: Built for industrial environments, the 26700 format withstands vibration, shock, and physical stress better than thinner cells, ensuring reliability in power tools, e‑bikes, and outdoor equipment.
Standard Voltage Platform: NMC/INR versions provide a nominal 3.6V–3.7V (full charge 4.2V), fully compatible with all quality Li‑ion chargers that accept 26mm diameter cells.
Rechargeable – Economical: Supports 500–1,000+ charge/discharge cycles (≥80% capacity retention) for low total cost of ownership over years of service.

26700 vs. 18650 vs. 21700 vs. 26650 – Key Comparison

Parameter	26700	18650	21700	26650
Dimensions	~26mm × ~70mm	~18mm × ~65mm	~21mm × ~70mm	~26mm × ~65mm
Volume (approx.)	37.2 cm³	16.5 cm³	24.2 cm³	34.5 cm³
Typical Capacity Range	3000mAh – 5500mAh	1500mAh – 3500mAh	3000mAh – 5800mAh	3000mAh – 5000mAh
High-Drain Continuous Discharge	30A – 40A	20A – 35A	30A – 45A	20A – 30A
Internal Resistance (Power Cells)	8mΩ – 14mΩ	10mΩ – 15mΩ	8mΩ – 12mΩ	12mΩ – 18mΩ
Key Strengths	Highest capacity, extreme power, robust	Most standardized, lowest cost	Best energy-to-size ratio, future mainstream	Large diameter, good thermal mass
Typical Applications	Heavy-duty flashlights, power tools, e‑bikes, solar storage	Universal across all categories	EVs, premium power tools, portable power	High‑power flashlights, industrial equipment

Popular 26700 Cell Models – Quick Reference

Model	Brand	Chemistry	Nominal Capacity	Continuous Discharge	Internal Resistance (approx.)	Positioning
INR26700-30A	Samsung	NMC	3000mAh	30A	≤12mΩ	Ultra-high-drain; premium power tools & hot‑rod flashlights
INR26700-40A	Samsung	NMC	4000mAh	20A	≤16mΩ	Balanced high-capacity with solid current capability
EVE 26700-50E	EVE	NMC	5000mAh	10A	≤20mΩ	Maximum capacity; flashlights & light electric vehicles
LR26700SA	Lishen	NMC	4500mAh	15A	≤18mΩ	Cost‑effective high‑capacity workhorse
EVE 26700-40E	EVE	NMC	4000mAh	20A	≤15mΩ	Versatile performer; power banks & e‑bike packs
INR26700-35A	Samsung	NMC	3500mAh	25A	≤14mΩ	Best balance; high‑output flashlights & power tools

Typical Specifications Range (26700)

Parameter	Typical Range
Nominal Voltage	3.6V – 3.7V (NMC)
Full Charge Voltage	4.2V ±0.05V
Capacity Range	3000mAh – 5500mAh
Continuous Discharge Current	10A – 40A (model dependent)
Internal Resistance (AC 1kHz)	8mΩ – 25mΩ
Cycle Life	500 – 1000 cycles (≥80% capacity retention)
Operating Temperature	Charge: 0°C~45°C / Discharge: -20°C~60°C
Dimensions	Diameter 25.8mm–26.5mm × Length 69.5mm–70.5mm

Typical Applications

Application	Recommended Type	Suggested Models
Heavy‑duty power tools (angle grinders, rotary hammers)	High-Drain	Samsung 30A, Samsung 35A
FET‑driven hot‑rod flashlights / searchlights	Ultra-High-Drain	Samsung 30A, Samsung 35A
E‑bike / e‑scooter / e‑motorcycle packs	High-Capacity / Balanced	Samsung 40A, EVE 40E, EVE 50E
Portable power stations / RV energy storage	High-Capacity	EVE 50E, Lishen 4500mAh
High‑wattage vaping / mechanical mods	High-Drain	Samsung 30A
Marine / off‑grid solar battery banks	High-Capacity	EVE 50E, Lishen 4500mAh
Industrial / medical equipment	High-Reliability	Samsung 40A, EVE 40E

How to Choose the Right 26700 Battery?

Your Requirement	Recommended Type	Suggested Model
I need maximum current for a FET flashlight or high‑power tool	Ultra-High-Drain	Samsung INR26700-30A
I want the longest runtime for a flooder light or solar generator	High-Capacity	EVE 26700-50E
I need a great all‑rounder for mixed use	Balanced	Samsung INR26700-35A, EVE 40E
I’m building a large pack and need bulk quantities	Contact our sales team	—

⚠️ 26700 Battery Safety Guidelines

Verify Dimensional Compatibility: 26700 cells are significantly wider (26mm) and longer (70mm) than 18650, 20700, or 21700 cells. Ensure your device's battery tube or compartment can physically accept a 26mm diameter — do not force a 26700 into a 21mm or 18mm body.
Use a Suitable 4.2V Li-ion Charger: Select a charger with bays wide enough for 26mm cells and a reliable 4.2V cut‑off. Many compact chargers marked for 18650/21700 cannot fit 26700 without adapters or modification.
Avoid Over-Discharge: Disconnect the load when voltage under load falls below 2.5V–2.8V. Recharge promptly to prevent irreversible capacity degradation.
Prevent Short Circuits: Never carry loose 26700 cells in pockets with keys, coins, or other metal objects. Always use a dedicated battery case or silicone sleeve.
Inspect Wraps and Insulators: A nicked or torn wrapper, or a missing positive‑terminal insulating ring, can lead to a hard short. Replace the wrap immediately or take the cell out of service.
Recycle Responsibly: Dispose of end‑of‑life 26700 cells only at certified battery recycling facilities. Never discard in household trash.

Why Choose Our 26700 Batteries?

Genuine Grade‑A Cells: Direct procurement from Samsung, EVE, Lishen, and other Tier-1 manufacturers. Every cell is factory‑fresh and 100% authentic — no rewraps, no recycled cores.
Stringently Tested & Matched: Each batch undergoes capacity grading, IR measurement, and voltage sorting. Industrial‑grade cell matching is available for multi‑cell packs.
Comprehensive Selection: Our inventory spans ultra‑high‑drain, high‑capacity, and balanced 26700 models — one destination for all your 26mm-format power needs.
Flexible Ordering Options: Single‑cell retail, multi‑pack discounts, volume tier pricing, and custom pack assembly services are all supported.
Full Compliance Documentation: UN38.3 test reports, MSDS, CE, RoHS certificates provided to streamline international shipping and institutional procurement.
Expert Technical Guidance: Whether you need help with cell selection, battery pack design, BMS integration, or after‑sales support, our engineering team is here to assist.

👇👇👇 Browse the product listings below and filter by capacity or continuous discharge current to select the ideal 26700 cell for your build. For bulk quotations, custom‑configured packs, or technical consultation, reach out to our engineering team directly.

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