In the world of lithium batteries, cylindrical cells have always held an irreplaceable position, thanks to their standardized dimensions, mature manufacturing processes, and stable performance. Whether 18650 or 21700, these cells have penetrated every aspect of our lives — from laptops, high-power flashlights, and power tools, to drones, energy storage systems, and electric vehicles — cylindrical lithium batteries are the core power source.
The numbers in the cell model directly reflect their physical dimensions: 18650 means 18mm in diameter and 65mm in height, while 21700 means 21mm in diameter and 70mm in height. Compared to 18650, the 21700 offers approximately 47% more volume and 30%–40% higher capacity per cell, which is why it has gained widespread adoption in EVs and high-power devices in recent years.
Faced with a wide array of brands and models in the market, how do you make the right choice? Today, we take an in-depth look at the world‘s leading cylindrical lithium battery brands to help you find the perfect cell.
📌 Japanese, Korean & Taiwanese Brands: Technology Benchmarks
Japanese and Korean brands have long dominated the high-end cylindrical lithium battery market, renowned for their superior energy density, reliability, and consistency.
🔵 Samsung SDI
Samsung SDI is an absolute leader in the global cylindrical lithium battery space. Its 18650 and 21700 series cells are widely used in applications requiring high power, high capacity, and long lifespan, such as power tools, gardening equipment, and micro-mobility devices. Samsung SDI introduced its 21700 cell as early as 2017, offering 50% more capacity than 18650 cells while achieving an excellent balance between volume, power output, and battery life.
🟢 LG Energy Solution
LG Energy Solution is renowned for its world-class mass production capacity and reliability. Its cylindrical cells combine high energy density, long cycle life, and high safety (NCM cathode material). LG has established deep partnerships with multiple global automakers. LG's INR series cells achieve an energy density of up to 250Wh/kg — 15% higher than the industry average — while maintaining temperatures below 80°C under 2C discharge.
🔴 Murata / Sony
Sony invented the 18650 battery, a technology that remains a benchmark in the global lithium battery industry. After acquiring Sony‘s battery business, Murata continues the legendary VTC series. Take the US21700VTC6A as an example: this cell boasts an impressive capacity of 4000mAh-4100mAh, a continuous discharge current of 35A-40A, and internal resistance below 10 milliohms — truly a performance beast.
🟡 Panasonic
Panasonic was the exclusive battery supplier to Tesla in its early days. Its NCR series 18650 cells (such as the famous NCR18650B) are famous for their high capacity of 3400mAh-3500mAh and excellent cycle life of up to 1000 cycles. Panasonic‘s NCR21700 takes NCA (nickel-cobalt-aluminum) cathode chemistry a step further by incorporating silicon into the anode, pushing the boundaries of energy density.
🟠 Molicel
Molicel is the undisputed king of high-drain applications, enjoying an excellent reputation in the vaping, drone, and professional power tool sectors. Its INR-21700-P50S cell delivers up to 200W of output power and a peak discharge current of 100A, and operates normally in extremely cold environments down to -40°C — the top choice for those pursuing ultimate performance.
🏭 Top Chinese Brands: The Perfect Balance of Quality and Value
In recent years, Chinese battery manufacturers have rapidly risen, matching the technology and quality of international giants while offering significant cost advantages.
🔘 EVE Energy
EVE Energy is one of the leading domestic manufacturers of cylindrical lithium batteries. Its 18650 energy-type cells cover capacities from 2550mAh to 3500mAh, while its 21700 energy-type cells reach 5000mAh or even 5700mAh. In 2025, EVE Energy‘s newly launched 18650 30PL and 21700 50PL models achieved comprehensive breakthroughs in six dimensions: high power, low temperature rise, ultra-fast charging, and long cycle life.
🔘 BAK Battery
BAK Battery was one of the earliest companies in China to develop and produce cylindrical lithium batteries. Its small-power cylindrical products cover both 18650 and 21700 series, integrating high energy density, long cycle life, high rate capability, fast charging, and strong temperature adaptability. BAK‘s models such as the N21700CH-58E hold a significant share of the global power tool battery market.
🔘 Lishen Battery
Lishen has a strong military-industrial background, and its cylindrical cells are known for their excellent consistency and stability. Lishen‘s newly released 21700 40PT model features a tabless structure, supporting 60A full discharge, 80A continuous discharge, and 200A pulse discharge (for 5 seconds), with a cycle life of approximately 1000 cycles — making it an ideal choice for professional-grade power tools.
🔘 DMEGC
DMEGC is a well-known enterprise under the Hengdian Group. Its 18650-26E model offers 2600mAh capacity and supports up to 1000 cycles (at 80% depth of discharge), and is widely used in e-bikes, scooters, and solar systems — winning the market with reliability and cost-effectiveness.
🔘 Tenpower
Tenpower excels in the high-rate power cell segment and has been integrated into the supply chains of many well-known power tool brands, making it an important force in professional-grade applications.
🔘 Great Power
Great Power is one of China‘s leading lithium battery manufacturers, with products widely used in consumer electronics, energy storage, and power applications. Great Power’s 18650 and 21700 cells have gained broad market recognition for their stable quality and reliable safety performance.
🔧 How to Choose the Right Cell?
Faced with so many excellent brands, you can quickly narrow down your options based on your specific requirements:
| Requirement | Recommended Brands | Key Model References |
|---|---|---|
| High Energy Density / Long Runtime | Panasonic, Samsung SDI, LG, EVE | Panasonic NCR18650B / Samsung 35E / LG MJ1 / EVE 35V |
| High Rate Discharge | Molicel, Murata, Samsung SDI, BAK | Molicel P30B / Murata VTC6 / Samsung 25R / BAK |
| Ultimate Performance (Ultra-High Power) | Molicel, Lishen | Molicel P50S / Lishen 21700 40PT |
| Best Value for Money | EVE, Lishen, DMEGC, Tenpower | EVE / Lishen / DMEGC / Tenpower |
| Brand Tier | Top-tier (Japanese/Korean) > Molicel > Top-tier Chinese | — |
🛒 Choose Us with Confidence
As a professional supplier of cylindrical lithium batteries, we sell only genuine factory A-grade cells, all sourced through authorized channels, complete with full technical datasheets and test data. Our advantages include:
✅ Full Size Range: From 10440 to 4680 — the entire cylindrical battery series is available
✅ Genuine Guarantee: 100% factory A-grade, every cell is fully traceable
✅ Safety Certified: UN38.3, MSDS, and other international shipping safety certifications available
✅ Professional Service: B2B bulk discounts, technical selection support, global logistics solutions
👉 Visit our 18650 Battery Product Page or 21700 Battery Product Page now to view full specifications and pricing. For bulk purchases or technical inquiries, please feel free to contact us!