14500 Batteries

22 products

📖 Click to view full specifications, comparison & safety guide

14500 Batteries – AA-Sized Li-ion Cylindrical Cells, The High-Voltage Rechargeable Upgrade

Welcome to our 14500 Batteries collection. The 14500 lithium-ion cell (approx. 14mm diameter × 50mm length) is the rechargeable Li-ion version of the standard AA battery form factor. Sharing identical dimensions with AA cells, it delivers a 3.7V nominal voltage (roughly 3× that of NiMH AA) and usable capacities from 600mAh to 1000mAh—making it the ideal choice for replacing disposable alkalines and upgrading legacy AA-powered devices. This collection features both NMC (ternary lithium) and LiFePO₄ (lithium iron phosphate) chemistries, serving a wide range of applications including high-performance flashlights, headlamps, wireless mice, remote controls, digital cameras, electric toys, medical devices, and various portable electronics.

Core Advantages of 14500 Batteries

Standard AA Size – Perfect Compatibility: Approximately 14mm diameter × 50mm length—identical to standard AA batteries. Direct drop-in replacement for most AA-powered devices.
High Voltage Platform: NMC versions deliver a nominal 3.7V (full charge 4.2V)—approximately 3× the voltage of NiMH AA (1.2V)—providing more power and brighter illumination.
Rechargeable – Economical & Eco-Friendly: Supports 500–1,000+ charge/discharge cycles. Replaces disposable alkalines for lower long-term cost and reduced battery waste.
Flexible Chemistry Options: Available in both high-energy NMC (3.7V) and inherently safe LiFePO₄ (3.2V) formulations to meet diverse voltage and safety requirements.
Low Self-Discharge: Monthly self-discharge as low as 3% ensures readiness even after extended storage—ideal for intermittently used devices.
Lightweight Design: Weighing only 18g–22g per cell—lighter than NiMH AA—perfect for weight-sensitive portable devices.

14500 vs. AA (Alkaline/NiMH) vs. 14430 – Key Comparison

Parameter	14500 (Li-ion)	AA Alkaline	AA NiMH	14430
Nominal Voltage	3.2V (LiFePO₄) / 3.7V (NMC)	1.5V	1.2V	3.2V / 3.7V
Full Charge Voltage	3.65V / 4.2V	~1.6V	~1.4V	3.65V / 4.2V
Typical Capacity	600mAh – 1000mAh	2000mAh – 3000mAh	1500mAh – 2500mAh	200mAh – 400mAh
Energy (Wh)	2.2Wh – 3.7Wh	3.0Wh – 4.5Wh	1.8Wh – 3.0Wh	0.7Wh – 1.5Wh
Rechargeable	✅ Yes	❌ No	✅ Yes	✅ Yes
Weight	~18g–22g	~23g	~26g–30g	~15g–18g
Key Strengths	High voltage, lightweight, rechargeable	Very low cost, high capacity	Low cost, widely compatible	Shorter than 14500, fits tighter spaces
Typical Applications	High-power flashlights, digital devices, remotes	Low-power daily devices	Low-power daily devices	Compact flashlights, medical devices

Popular 14500 Cell Models – Quick Reference

Model	Brand/Source	Chemistry	Nominal Capacity	Continuous Discharge	Dimensions (approx.)	Positioning
INR14500 1000mAh	Generic	NMC	1000mAh	1A–2A	14×50mm	High-capacity NMC; top choice for flashlights & digital devices
ICR14500 900mAh	Generic	LiCoO₂	900mAh	0.5A–1A	14×50mm	Balanced; general consumer electronics
IFR14500 600mAh	Generic	LiFePO₄	600mAh	0.5A–1A	14×50mm	LiFePO₄; high safety / long cycle life
Vapcell INR14500 1000mAh	Vapcell	NMC	1000mAh	2A	14×50mm	High-performance NMC; preferred for bright flashlights
Efest IMR14500 650mAh	Efest	IMR	650mAh	2A–3A	14×50mm	High-drain; flashlights & vape compatible
Protected 14500	Custom	NMC + PCB	800–900mAh	0.5A–1A	14×51–52mm	Protected; consumer safety first choice

Typical Specifications Range (14500)

Parameter	Typical Range
Nominal Voltage	3.2V (LiFePO₄) / 3.6V–3.7V (NMC)
Full Charge Voltage	3.65V (LiFePO₄) / 4.2V (NMC)
Capacity Range	600mAh – 1000mAh
Continuous Discharge Current	0.5A – 3A (model dependent)
Internal Resistance	40mΩ – 120mΩ
Cycle Life	500 – 1500+ cycles (chemistry dependent)
Operating Temperature	Charge: 0°C~45°C / Discharge: -20°C~60°C
Dimensions	Diameter 13.8mm–14.5mm × Length 49.5mm–52.0mm (protected slightly longer)
Weight	Approx. 18g – 22g

Typical Applications

Application	Recommended Type	Suggested Models
High-performance flashlights / EDC lights	NMC / IMR High-Capacity/Drain	Vapcell 1000mAh, Efest IMR14500
Headlamps / bike lights	Protected 14500 / NMC	Protected 14500, ICR14500 900mAh
Wireless mice / keyboards / remotes	NMC Balanced	ICR14500 900mAh
Digital cameras / flash units	NMC High-Capacity	Vapcell 1000mAh
Electric toys / models	NMC High-Drain	Efest IMR14500
Medical devices / portable instruments	LiFePO₄ / Protected	IFR14500 600mAh, Protected 14500
Solar storage / emergency lighting	LiFePO₄	IFR14500 600mAh
Smart home sensors / locks	LiFePO₄	IFR14500 600mAh

How to Choose the Right 14500 Battery?

Your Requirement	Recommended Type	Suggested Model
I need maximum capacity for flashlights or digital devices	NMC High-Capacity	Vapcell 1000mAh, INR14500 1000mAh
I want built-in protection for worry-free use	Protected 14500	Various protected 14500 models
Safety is critical; for medical or emergency applications	LiFePO₄	IFR14500 600mAh
I need high current output for bright flashlights or vapes	IMR High-Drain	Efest IMR14500
I need bulk quantities or custom packs	Contact our sales team	—

⚠️ 14500 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.
Not a Universal AA Replacement: 14500 voltage (3.7V) is significantly higher than standard 1.5V AA cells. Connecting two 14500s in series for a 3V device may damage or destroy the device. Always confirm your device supports 3.7V Li-ion before use. Some flashlights support dual compatibility—check the manual.
Use a Dedicated Li-ion Charger: 14500 cells require a Li-ion-specific charger. Do not use NiMH/NiCd chargers. Select a charger that explicitly supports 14500.
Avoid Over-Discharge: Stop discharging when voltage drops below 2.5V–2.8V (NMC) or 2.0V–2.5V (LiFePO₄). Recharge promptly to prevent permanent capacity loss.
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 14500 Batteries?

Genuine Grade-A Cells: Sourced from Vapcell, Efest, and other reputable 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 AA-sized Li-ion 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 chemistry to find the perfect 14500 cell for your application. For volume quotes or custom pack solutions, please contact our engineering team.

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