Aug 5, 2024 · The 21700 battery features higher energy density and capacity compared to smaller cells. Benefits include longer runtimes and better thermal management, making them suitable
Mar 19, 2025 · Wondering about 21700 battery capacity? Find the typical and maximum mAh values, understand what influences capacity, and make informed choices.
Learn how to calculate and maintain safe discharge rates for 18650 and 21700 battery packs. Expert guide on factors affecting discharge, methods, and best practices.
Apr 11, 2025 · The 21700 lithium battery cell has emerged as a pivotal innovation in energy storage solutions. With its 21mm diameter and 70mm length, this cylindrical power source
Jan 28, 2024 · What is a 21700 battery? A 21700 battery is a high capacity lithium ion rechargeable battery. Their proper name is a "21700 cell". The 21700 cell
As of February 2025, the maximum capacity of 21700 lithium-ion batteries has reached 6000mAh. For example: Far East Battery (FEB) offers the 21700-6000mAh model with a typical capacity
Nov 2, 2024 · Lithium-ion batteries are everywhere. From laptops to electric vehicles (EVs), they power our modern lives, and two of the most popular cells for high-energy applications are the
Jun 25, 2025 · Compared to the well-known 18650 battery (18mm × 65mm), the 21700 offers enhanced capacity, higher energy density, and improved power output for high-demand
Apr 11, 2025 · With its 21mm diameter and 70mm length, this cylindrical power source delivers up to 4800mAh capacity while maintaining robust thermal management. Engineers particularly

The 21700 battery is a cylindrical lithium-ion battery with a diameter of 21mm and a length of 70mm. It offers a nominal voltage of 3.7V and a capacity of up to 5,000mAh, making it a powerful and efficient energy source. Its energy density ranges between 250 Wh/kg and 300 Wh/kg, depending on the chemistry.
Energy density: The 21700 batteries have an energy density ranging from 250 Wh/kg to 300 Wh/kg. Size and weight: The battery's dimensions are 70 mm in length and 21 mm in diameter3. The weight typically ranges from 50 to 70 grams. Voltage: The voltage of a 21700 battery typically varies between 3.6V to 3.7V when it’s in use.
The highest capacity 21700 is the XTAR 21700 6000mAh. The closest runner-ups are Vapcell's F60 (6000mAh) and BAK's 5.5Ah (5500mAh) cell. The XTAR 6000mAh cell is not particularly hard to come by, but it is relatively expensive at over $15 per cell.
While 18650 batteries remain widely used, the 21700 offers higher capacity in a slightly larger form factor. The 20700 battery serves as a close alternative, while the 26650 provides even greater capacity at the cost of increased size.
It is good to see 21700 lithium cells gives the ability to compete and provide the replacement option to the corded tools in all-around areas by providing longer run time. Its safety property along with its high output current and energy capacity makes this battery popular among tech industries.
Protected 21700 batteries generally have a button top, while unprotected ones typically have a flat top. Charge cycles: A 21700 battery can last between 500 to 1000 charge cycles, depending on its chemistry, usage, and maintenance. The 21700 battery is used in devices such as electric vehicles, flashlights, and power tools.
The global industrial and commercial energy storage market is experiencing explosive growth, with demand increasing by over 250% in the past two years. Containerized energy storage solutions now account for approximately 45% of all new commercial and industrial storage deployments worldwide. North America leads with 42% market share, driven by corporate sustainability initiatives and tax incentives that reduce total project costs by 18-28%. Europe follows closely with 35% market share, where standardized industrial storage designs have cut installation timelines by 65% compared to traditional built-in-place systems. Asia-Pacific represents the fastest-growing region at 50% CAGR, with manufacturing scale reducing system prices by 20% annually. Emerging markets in Africa and Latin America are adopting industrial storage solutions for peak shaving and backup power, with typical payback periods of 2-4 years. Major commercial projects now deploy clusters of 15+ systems creating storage networks with 80+MWh capacity at costs below $270/kWh for large-scale industrial applications.
Technological advancements are dramatically improving industrial energy storage performance while reducing costs. Next-generation battery management systems maintain optimal operating conditions with 45% less energy consumption, extending battery lifespan to 20+ years. Standardized plug-and-play designs have reduced installation costs from $85/kWh to $40/kWh since 2023. Smart integration features now allow multiple industrial systems to operate as coordinated energy networks, increasing cost savings by 30% through peak shaving and demand charge management. Safety innovations including multi-stage fire suppression and thermal runaway prevention systems have reduced insurance premiums by 35% for industrial storage projects. New modular designs enable capacity expansion through simple system additions at just $200/kWh for incremental capacity. These innovations have improved ROI significantly, with commercial and industrial projects typically achieving payback in 3-5 years depending on local electricity rates and incentive programs. Recent pricing trends show standard industrial systems (1-2MWh) starting at $330,000 and large-scale systems (3-6MWh) from $600,000, with volume discounts available for enterprise orders.