26350 Batteries

7 products

📖 Click to view full specifications, comparison & safety guide

26350 Batteries – Compact High-Power Cylindrical Cells, Short Form Factor with Serious Discharge

Welcome to our 26350 Batteries collection. The 26350 lithium-ion cell (approx. 26mm diameter × 50mm length) is a stubby, high-performance cylindrical format purpose‑built for devices that demand exceptional current in a very short package. While mainstream formats like 18650 or 21700 stretch length to pack in more active material, the 26350 doubles down on diameter — matching the girth of a 26650 but in a length shorter than an 18650. This unique geometry allows ultra‑low internal resistance and continuous discharge ratings of 15A to 30A with capacities typically ranging from 1200mAh to 2500mAh. 26350 cells are the definitive choice for high‑output EDC flashlights, hot‑rod pocket throwers, compact vapour devices, mini power tools, and specialty medical or aerospace equipment where every millimetre counts and voltage sag is not tolerated.

Core Advantages of 26350 Batteries

Ultra-Compact Length, Maximum Current: At only 50mm long, 26350 cells fit where 18650 or 21700 cannot — yet they still deliver 15A–30A continuous without breaking a sweat. The short internal current path keeps resistance exceptionally low.
Outstanding Power Density for the Size: Typical capacities of 1200mAh–2500mAh paired with true high‑drain ratings give these cells a power‑per‑cubic‑centimetre ratio that rivals much larger formats.
Single-Cell Optimisation: Most applications use a single 26350, eliminating the need for series balancing. The cell’s short stature enables incredibly compact, pocketable device designs.
Minimal Voltage Sag Under Load: Internal resistance as low as 10mΩ–18mΩ (AC 1kHz) means the voltage holds steady even as the cell approaches depletion — critical for direct‑drive and FET‑driven flashlights.
Standard 3.6V–3.7V Nominal Platform: NMC chemistry provides a familiar 4.2V full charge, compatible with all quality Li‑ion chargers that accept 26mm diameter cells.
Reliable Thermal Behaviour: Heavy‑duty electrode design and short ionic pathways keep waste heat manageable during high‑current bursts, extending both safety margins and cycle life.
Rechargeable & Cost‑Effective: Supports 300–600 charge/discharge cycles (≥80% capacity retention) with proper care, making long‑term operation economical.

26350 vs. 18650 vs. 21700 vs. 26650 – Key Comparison

Parameter	26350	18650	21700	26650
Dimensions (approx.)	26mm × 50mm	18mm × 65mm	21mm × 70mm	26mm × 65mm
Volume (approx.)	26.5 cm³	16.5 cm³	24.2 cm³	34.5 cm³
Typical Capacity Range	1200mAh – 2500mAh	1500mAh – 3500mAh	3000mAh – 5800mAh	3000mAh – 6000mAh
High-Drain Continuous Discharge	15A – 30A	20A – 35A	30A – 45A	15A – 25A
Internal Resistance (Power Cells)	10mΩ – 18mΩ	10mΩ – 15mΩ	8mΩ – 12mΩ	12mΩ – 20mΩ
Key Strengths	Shortest body, very high current density	Highest standardisation, low cost	Highest energy density, future mainstream	Large capacity, good thermal mass
Typical Applications	Compact flashlights, mini vapourisers, specialty tools	Universal across all categories	EVs, premium power tools, energy storage	High‑end flashlights, solar packs, industrial

Popular 26350 Cell Models – Quick Reference

Model	Brand	Chemistry	Nominal Capacity	Continuous Discharge	Internal Resistance (approx.)	Positioning
INR26350-K25	Vapcell	NMC	2000mAh	25A	≤12mΩ	Ultra-high-drain; top pick for hot‑rod flashlights
INR26350-K30	Vapcell	NMC	2000mAh	8A	≤25mΩ	High‑capacity for compact devices; long runtime focus
P2635CRR	Keeppower	NMC	1200mAh	30A	≤10mΩ	Absolute maximum current; competition‑grade
26350-20A	Efest	NMC	1700mAh	20A	≤15mΩ	Balanced performance for EDC flashlights
26350‑2000	Shockli	NMC	2000mAh	10A	≤22mΩ	Reliable moderate‑drain for everyday use
L2635A	LiitoKala	NMC	1500mAh	15A	≤18mΩ	Budget‑friendly all‑rounder

Typical Specifications Range (26350)

Parameter	Typical Range
Nominal Voltage	3.6V – 3.7V (NMC)
Full Charge Voltage	4.2V ±0.05V
Capacity Range	1200mAh – 2500mAh
Continuous Discharge Current	8A – 30A (model dependent)
Internal Resistance (AC 1kHz)	10mΩ – 25mΩ
Cycle Life	300 – 600 cycles (≥80% capacity retention)
Operating Temperature	Charge: 0°C~45°C / Discharge: -20°C~60°C
Dimensions	Diameter 25.8mm–26.5mm × Length 49.5mm–50.5mm

Typical Applications

Application	Recommended Type	Suggested Models
Hot‑rod EDC flashlights / pocket throwers	High-Drain / Ultra-High-Drain	Vapcell K25, Keeppower P2635CRR
Compact vapouriser mods	High-Drain	Efest 20A, Vapcell K25
Miniature power tools / engravers	High-Drain / Balanced	Vapcell K25, Efest 20A
Medical instruments / portable diagnostics	High-Capacity / Reliable	Shockli 2000mAh, Vapcell K30
Hobby / RC transmitters & receivers	High-Capacity	Vapcell K30, LiitoKala L2635A
Emergency lighting / helmet lamps	High-Capacity	Shockli 2000mAh, LiitoKala L2635A
Specialty aerospace / defence circuits	Ultra-High-Drain	Keeppower P2635CRR, Vapcell K25

How to Choose the Right 26350 Battery?

Your Requirement	Recommended Type	Suggested Model
I need the highest possible current for a FET‑driven flashlight	Ultra-High-Drain	Keeppower P2635CRR, Vapcell K25
I want the longest runtime in a very small host	High-Capacity	Vapcell K30, Shockli 2000mAh
I need a balanced cell for mixed use (flashlight + vapouriser)	Balanced	Efest 20A, LiitoKala L2635A
I’m building a custom multi‑cell pack	Contact our engineering team	—

⚠️ 26350 Battery Safety Guidelines

Verify Dimensional Fit: 26350 cells are considerably wider than 18650/20700 and shorter than nearly all other high‑power formats. Always confirm that your battery tube or compartment accepts a full 26mm diameter and 50mm length — do not force a 26350 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 strict 4.2V termination. Many compact chargers designed for 18650 will not physically accommodate 26350 without modification.
Avoid Over-Discharge: Do not allow the cell voltage to drop below 2.5V–2.8V. Recharge promptly after use to prevent permanent capacity loss and internal damage.
Prevent Short Circuits: Do not carry loose 26350 cells in pockets with keys, coins, or other metal objects. Always use a protective case or silicone sleeve.
Inspect Wraps and Insulators: A damaged wrap or missing positive‑terminal insulator ring can cause a dead short. Replace the wrap immediately or discontinue use.
Recycle Responsibly: Dispose of spent cells at certified battery recycling points. Never discard 26350 cells in household waste.

Why Choose Our 26350 Batteries?

Genuine Grade‑A Cells Only: We source directly from Vapcell, Keeppower, Shockli, Efest, and other verified manufacturers. Every cell is brand‑new, factory‑fresh, and 100% authentic — zero rewraps or recycled cores.
Batch‑Tested & Matched: Each shipment undergoes capacity grading, internal‑resistance screening, and voltage sortation. Matched pairs/groups are available for multi‑cell builds.
Curated High‑Performance Selections: We carry only the highest‑performing 26350 models, focusing on cells that deliver genuine ultra‑high drain or exceptionally stable capacity for the format.
Flexible Ordering: Order single cells for personal use, multi‑packs for spares, or bulk quantities with tiered pricing for enthusiasts and workshops.
Full Documentation: UN38.3 test reports, MSDS, and CE/RoHS compliance documents provided to simplify international shipping and institutional procurement.
Expert Support: Our team can advise on cell selection, charging solutions, pack assembly, and safety best practices — contact us before you buy if you’re unsure.

👇👇👇 Explore the product listings below to find the perfect 26350 cell for your application, whether you’re building a 3000‑lumen pocket thrower or powering a precision instrument. For bulk pricing, custom wraps, or technical consultation, reach out to our sales team directly.

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