Li-ion (3.6/3.7V) Battery & Charger

Li-ion (3.6/3.7V) Battery & Charger – High-Energy NMC/NCA Cylindrical Cells + Dedicated 4.2V Smart Chargers, Power for the Most Demanding Devices

Welcome to our Li-ion (3.6/3.7V) Battery & Charger collection. This category is dedicated to the world's most widely adopted lithium-ion chemistry: NMC (Nickel Manganese Cobalt) and NCA (Nickel Cobalt Aluminum). Renowned for their exceptional energy density, high discharge rates, and mature supply chain, these 3.6V–3.7V cells are the power core behind everything from high-lumen flashlights and power tools to portable power stations and vaping devices. Because NMC/NCA lithium-ion cells require a strict 4.2V full-charge cut-off (unlike 3.2V LiFePO₄), using the right charger is absolutely critical. This collection provides a full range of Li-ion cells—High-Capacity (3000mAh–5000mAh+), High-Drain (20A–45A), and Protected—along with dedicated 4.2V smart chargers compatible with 18650, 21700, 26650, 14500, and more. Whether you're powering a professional power tool or building a high-drain battery pack, you'll find the perfect power combo right here.

Core Advantages of 3.6/3.7V Li-ion Batteries

• Class-Leading Energy Density: Mainstream capacities range from 3000mAh to 5000mAh, with advanced 21700 models reaching 5800mAh. This chemistry offers the highest energy-per-weight ratio, enabling ultra-long runtime in compact packages.
• Exceptional High-Drain Power Delivery: High-drain variants support 20A–45A continuous discharge with ultra-low internal resistance (as low as 8mΩ–15mΩ). Ideal for high-wattage vaping, brushless power tools, and FPV drone racing.
• Wide Range of Standardized Sizes: Available in the full ecosystem of cylindrical sizes, including 18650, 21700, 26650, 14500, 16340, and 18350, ensuring compatibility with tens of thousands of consumer and industrial devices.
• Rechargeable – Cost-Effective & Eco-Friendly: Supports 500–1,000+ charge/discharge cycles under normal use, replacing hundreds of disposable batteries to reduce long-term costs and waste.
• Protected Options Available: Built-in PCM (Protection Circuit Module) cells offer plug-and-play safety against overcharge, over-discharge, and short circuits, ideal for beginners and consumer electronics.

Core Advantages of Dedicated 4.2V Li-ion Chargers

• Precision 4.2V CC/CV Charging Profile: These chargers are engineered with a strict Constant Current (CC) / Constant Voltage (CV) algorithm, automatically terminating the charging cycle precisely at 4.2V ±0.05V—the optimal and safe limit for NMC/NCA chemistry.
• Multiple Safety Protections: Built-in overcharge, over-discharge, overcurrent, short-circuit, reverse polarity, and overheat protection for comprehensive safety.
• Wide Size Compatibility: Adjustable negative spring sliders support cylindrical cells from short 16340/14500 to large 26650/21700, ensuring secure and reliable contact.
• Independent Charging Channels: Multi-bay chargers control each slot independently—charge multiple cells of different sizes and states without mutual interference.
• LCD Digital Display: Real-time monitoring of charging voltage, current, charged capacity, and internal resistance—providing full transparency and peace of mind.

3.7V Li-ion vs. 3.2V LiFePO₄ vs. 1.2V NiMH – Charging Profile Comparison

Popular Li-ion Battery & Charger Models – Quick Reference

Typical Specifications Range (Li-ion Battery & Charger)

Typical Applications

How to Choose the Right Li-ion Battery & Charger?

⚠️ Li-ion Battery & Charger Safety Guidelines

• Use Only a Proper 4.2V Li-ion Charger: NMC/NCA cells require a charger with a strict 4.2V cut-off. Never attempt to charge a standard 3.7V Li-ion cell using a LiFePO₄ (3.65V) charger or a NiMH charger—it will fail to charge, and the battery may be damaged.
• Do Not Mix with LiFePO₄ Batteries: Standard Li-ion cells have a nominal voltage of 3.7V. Never mix 3.7V Li-ion and 3.2V LiFePO₄ cells in the same device or battery pack, as their voltage platforms and discharge characteristics are incompatible.
• Avoid Over-Discharge: Stop discharging when voltage drops below 2.5V–2.8V per cell. Recharge promptly to prevent permanent capacity loss and internal short circuits.
• Discontinue Use if Wrap is Damaged: A torn or damaged wrapper can cause short circuits. Replace the wrap or discontinue use immediately.
• Avoid High Temperatures: Keep away from fire, direct sunlight, and hot environments.
• Recycle Responsibly: Dispose of used cells at designated recycling facilities. Never discard in household trash or incinerate.

Why Choose Our Li-ion Battery & Charger Collection?

• Genuine Grade-A Cells: Batteries sourced directly from Samsung, LG, Murata, Panasonic, Molicel, EVE, and other Tier-1 manufacturers. Chargers from XTAR, Nitecore, and professional brands.
• Fully Tested & Matched: Every battery batch undergoes capacity grading, IR testing, and voltage sorting. Industrial-grade matching available for pack builders.
• One-Stop Shopping: Cells, chargers, and accessories all in one place—save time and effort.
• 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, charger matching, and after-sales service.

👇👇👇 Browse the product list below to find the perfect 3.6/3.7V Li-ion Battery & Charger combo for your application. For volume quotes or custom pack solutions, please contact our engineering team.