10440 Batteries

9 products

📖 Click to view full specifications, comparison & safety guide

10440 Batteries – AAA-Sized Cylindrical Li-ion Cells, The High-Energy Rechargeable Upgrade

Welcome to our 10440 Batteries collection. The 10440 lithium-ion cell (approx. 10mm diameter × 44mm length) is the rechargeable Li-ion version of the standard AAA battery form factor. Sharing identical dimensions with AAA cells, it delivers a 3.7V nominal voltage (roughly 3× that of NiMH AAA) and usable capacities from 200mAh to 400mAh—making it the ideal choice for replacing disposable alkalines and upgrading legacy AAA-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 10440 Batteries

Standard AAA Size – Perfect Compatibility: Approximately 10mm diameter × 44mm length—identical to standard AAA batteries. Direct drop-in replacement for most AAA-powered devices.
High Voltage Platform: NMC versions deliver a nominal 3.7V (full charge 4.2V)—approximately 3× the voltage of NiMH AAA (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 8g–10g per cell—lighter than NiMH AAA—perfect for weight-sensitive portable devices.

10440 vs. AAA (Alkaline/NiMH) vs. 10370 – Key Comparison

Parameter	10440 (Li-ion)	AAA Alkaline	AAA NiMH	10370
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	200mAh – 400mAh	1000mAh – 1200mAh	600mAh – 1000mAh	100mAh – 450mAh
Energy (Wh)	0.7Wh – 1.5Wh	1.5Wh – 1.8Wh	0.7Wh – 1.2Wh	0.3Wh – 1.7Wh
Rechargeable	✅ Yes	❌ No	✅ Yes	✅ Yes
Weight	~8g–10g	~11g	~12g–14g	~7g–10g
Key Strengths	High voltage, lightweight, rechargeable	Very low cost, high capacity	Low cost, widely compatible	Shorter than 10440, fits tighter spaces
Typical Applications	High-power flashlights, digital devices, remotes	Low-power daily devices	Low-power daily devices	Micro devices, vapes

Popular 10440 Cell Models – Quick Reference

Model	Brand/Source	Chemistry	Nominal Capacity	Continuous Discharge	Dimensions (approx.)	Positioning
ICR10440 350mAh	Generic	LiCoO₂	350mAh	0.5A–1A	10×44mm	High-capacity LiCoO₂; top choice for consumer electronics
INR10440 300mAh	Generic	NMC	300mAh	1A–2A	10×44mm	Balanced; capacity and discharge capability
IFR10440 200mAh	Generic	LiFePO₄	200mAh	0.5A	10×44mm	LiFePO₄; high safety / long cycle life
Vapcell INR10440 350mAh	Vapcell	NMC	350mAh	1A	10×44mm	High-performance NMC; preferred for bright flashlights
Efest IMR10440 350mAh	Efest	IMR	350mAh	1.5A	10×44mm	High-drain; flashlights & vape compatible
Protected 10440	Custom	NMC + PCB	300–350mAh	0.5A–1A	10×45–46mm	Protected; consumer safety first choice

Typical Specifications Range (10440)

Parameter	Typical Range
Nominal Voltage	3.2V (LiFePO₄) / 3.6V–3.7V (NMC)
Full Charge Voltage	3.65V (LiFePO₄) / 4.2V (NMC)
Capacity Range	200mAh – 400mAh
Continuous Discharge Current	0.5A – 2A (model dependent)
Internal Resistance	50mΩ – 150mΩ
Cycle Life	500 – 1500+ cycles (chemistry dependent)
Operating Temperature	Charge: 0°C~45°C / Discharge: -20°C~60°C
Dimensions	Diameter 10.0mm–10.5mm × Length 44.0mm–46.0mm (protected slightly longer)
Weight	Approx. 8g – 10g

Typical Applications

Application	Recommended Type	Suggested Models
High-performance flashlights / EDC lights	NMC / IMR High-Drain	Vapcell 350mAh, Efest IMR10440
Headlamps / bike lights	Protected 10440 / NMC	Protected 10440, ICR10440 350mAh
Wireless mice / keyboards / remotes	NMC Balanced	ICR10440 350mAh
Digital cameras / flash units	NMC High-Capacity	Vapcell 350mAh
Electric toys / models	NMC High-Drain	Efest IMR10440
Medical devices / portable instruments	LiFePO₄ / Protected	IFR10440 200mAh, Protected 10440
Solar storage / emergency lighting	LiFePO₄	IFR10440 200mAh
Smart home sensors	LiFePO₄	IFR10440 200mAh

How to Choose the Right 10440 Battery?

Your Requirement	Recommended Type	Suggested Model
I need maximum capacity for flashlights or digital devices	NMC High-Capacity	Vapcell 350mAh, ICR10440 350mAh
I want built-in protection for worry-free use	Protected 10440	Various protected 10440 models
Safety is critical; for medical or emergency applications	LiFePO₄	IFR10440 200mAh
I need bulk quantities or custom packs	Contact our sales team	—

⚠️ 10440 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 AAA Replacement: 10440 voltage (3.7V) is significantly higher than standard 1.5V AAA cells. Connecting two 10440s in series for a 3V device may damage or destroy the device. Always confirm your device supports 3.7V Li-ion before use.
Use a Dedicated Li-ion Charger: 10440 cells require a Li-ion-specific charger. Do not use NiMH/NiCd chargers. Some multi-bay chargers may have minimum charging currents too high for 10440; select a charger with 10440 compatibility.
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 10440 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 AAA-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 10440 cell for your application. For volume quotes or custom pack solutions, please contact our engineering team.

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