18350 Batteries

10 products

📖 Click to view full specifications, comparison & safety guide

18350 Batteries – Compact High-Power Cylindrical Cells, Small but Mighty

Welcome to our 18350 Batteries collection. The 18350 lithium-ion cell (18mm diameter × 35mm length) is the "short sibling" of the 18650, reducing length by nearly half while maintaining the same diameter. This compact design enables integration into space-constrained devices while preserving the core advantages of cylindrical cells: robust construction, excellent heat dissipation, and superior consistency. Mainstream 18350 capacities range from 700mAh to 1200mAh, with high-drain models supporting 10A–15A continuous discharge—making them the ideal power source for mini flashlights, compact vape mods, headlamps, laser rangefinders, portable medical devices, and micro RC models.

Core Advantages of 18350 Batteries

Ultra-Compact Form Factor: At just 35mm long—30mm shorter than an 18650—the 18350 fits into extremely tight spaces, enabling device miniaturization.
High Power Density: Despite modest capacity, high-drain 18350 cells deliver 10A–15A continuous discharge, offering power-per-volume rivaling larger formats.
18650 Ecosystem Compatible: Shared 18mm diameter allows charging in many 18650 chargers (verify length compatibility). Some devices accommodate 18350 via adapter sleeves.
Diverse Chemistries: Available in high-drain NMC/INR, reliable NCR, and inherently safe LiFePO₄ formulations to meet varied safety and performance requirements.
Rugged Construction: Steel casing provides excellent impact resistance—ideal for outdoor and tactical applications.

18350 vs. 18650 vs. 16340 (RCR123A) – Key Comparison

Parameter	18350	18650	16340 (RCR123A)
Dimensions	18mm × 35mm	18mm × 65mm	16mm × 34mm
Volume (approx.)	8.9 cm³	16.5 cm³	6.8 cm³
Typical Capacity Range	700mAh – 1200mAh	1500mAh – 3500mAh	500mAh – 800mAh
High-Drain Continuous Discharge	10A – 15A	20A – 45A	3A – 5A
Key Strengths	Short length, high power density	Highest standardization, largest capacity	Extremely compact, CR123A compatible
Typical Applications	Mini flashlights, compact vapes, headlamps	Universal across all categories	Tactical lights, night vision, rangefinders

Popular 18350 Cell Models – Quick Reference

Model	Brand/Origin	Chemistry	Nominal Capacity	Continuous Discharge	Positioning
INR18350-10A	China OEM / Aftermarket	NMC	1000mAh	10A	High-drain; top choice for mini vapes & flashlights
INR18350-15A	China OEM / Aftermarket	NMC	900mAh	15A	Ultra-high-drain; competition-grade mini devices
EVE 18350-10A	EVE Energy	NMC	1000mAh	10A	Cost-effective; consumer electronics
IFR18350	EVE Energy / China OEM	LiFePO₄	600mAh	5A	LiFePO₄; solar / emergency lighting
Protected 18350	Custom / OEM Assembled	NMC + PCB	700–900mAh	3A–5A	Protected; consumer flashlights

Typical Specifications Range (18350)

Parameter	Typical Range
Nominal Voltage	3.2V (LiFePO₄) / 3.6V–3.7V (NMC)
Full Charge Voltage	3.65V (LiFePO₄) / 4.2V (NMC)
Capacity Range	400mAh – 1200mAh
Continuous Discharge Current	3A – 15A (model dependent)
Internal Resistance	15mΩ – 50mΩ
Cycle Life	300 – 2000+ cycles (chemistry dependent)
Operating Temperature	Charge: 0°C~45°C / Discharge: -20°C~60°C
Dimensions	Diameter 18.0mm–18.5mm × Length 34.0mm–36.0mm (protected slightly longer)

Typical Applications

Application	Recommended Type	Suggested Models
Mini flashlights / EDC lights	NMC 18350 / Protected 18350	INR18350-10A, Protected 18350
Compact vape mods / mini box mods	NMC 18350 (High-Drain)	INR18350-10A/15A
Headlamps / bike lights	Protected 18350 / NMC 18350	Protected 18350, EVE 10A
Laser rangefinders / night vision	NMC 18350 / LiFePO₄	NCR18350A, IFR18350
Portable medical devices	NMC 18350 / LiFePO₄	NCR18350A, IFR18350
RC models / micro drones	NMC 18350 (High-Drain)	INR18350 10A /15A
Emergency lighting / exit signs	IFR18350 / LiFePO₄	IFR18350

How to Choose the Right 18350 Battery?

Your Requirement	Recommended Type	Suggested Model
I need high power output for mini vapes or bright flashlights	High-Drain NMC 18350	INR18350 10A/15A
I want built-in protection for worry-free use	Protected 18350	Various protected 18350 models
Safety is critical; for emergency or medical applications	IFR18350 / LiFePO₄	IFR18350
I need bulk quantities or custom packs	Contact our sales team	—

⚠️ 18350 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.
Length Compatibility: 18350 cells are shorter than 18650s but slightly longer than 16340s. Some 18650 chargers may not securely hold 18350s—use a universal multi-size charger. Protected 18350s are 1–2mm longer.
Limited Capacity – Plan for Runtime: 18350 capacity is only 1/4 to 1/3 that of 18650s. High-power devices will have shorter runtime; consider carrying spare cells.
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 18350 Batteries?

Fully Tested & Matched: Every batch undergoes capacity grading, IR testing, and voltage sorting. Industrial-grade matching services available.
Complete Portfolio: Covers high-drain NMC, protected, and LiFePO₄ series—one-stop for all 18350 needs.
Flexible Purchasing: Single-cell retail, multi-pack discounts, tiered bulk pricing, and custom 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.

👇👇👇 Browse the product list below and filter by capacity or discharge current to find the perfect 18350 cell for your application. For volume quotes or custom pack solutions, please contact our engineering team.

Showing 1 - 10 of 10 products