Capacity: Ranges from 3000mAh to 5000mAh, depending on the chemistry and application. Discharge Rate (CDR): High-drain cells available with 30A, 40A, or even higher CDR ratings for demanding power needs.
The 21700 battery is a larger type of lithium-ion rechargeable battery that has gained considerable popularity for its high capacity and improved performance compared to smaller alternatives, such as the
New modular designs enable capacity expansion through simple container additions at just $210/kWh for incremental capacity. These innovations have improved ROI significantly, with commercial projects typically
The 21700 battery is a high-performance lithium-ion cell, offering greater capacity and power than the 18650. Its the preferred choice for EVs, power tools, and solar energy storage due to its superior energy
Shop for eco-friendly, long-lasting rechargeable batteries. Find reliable AA, AAA, 9V, & lithium-ion batteries from trusted brands at affordable prices.
High-Energy Configuration: 7S3P series-parallel design using 21700 lithium-ion cells delivers a nominal voltage of 25.9V and a capacity of 15Ah (388.5Wh), ideal for medium to high-power solar energy storage and
While the 21700 may seem just slightly bigger, its larger size provides substantial benefits in terms of energy storage, power output, and overall performance. The increased size of the 21700 battery
These high-performance 21700 battery cells provide efficient, long-lasting power, ideal for demanding devices and applications. Order individual 21700 li-ion cells or bulk 21700 batteries today to keep your devices powered
The 21700 battery offers higher capacity (up to 5,000mAh), improved energy density, and longer runtimes. Its larger size also supports better thermal management, enhancing safety and performance.
In the ever-evolving world of portable power, the 21700 lithium-ion battery has emerged as a dominant force. This advanced cylindrical cell is rapidly becoming the go-to energy source for industries demanding high capacity,
Empa Solar Energy Europe is a leading energy storage equipment manufacturer and integrator based in Poland, serving the European market. We specialize in C&I energy storage systems for factories and warehouses, industrial battery storage systems for heavy-duty applications, factory energy storage systems (ESS) to optimize production, commercial battery energy storage systems (BESS) for retail and offices, enterprise storage solutions for corporate campuses, industrial park energy storage for multi-tenant sites, commercial battery storage for peak shaving, industrial battery storage systems for backup power, and remote base station power solutions for telecom towers. Our portfolio also includes lithium-ion batteries, system-level battery management systems (BMS), energy conversion systems (PCS), energy storage battery system cabinets, communication cabinets for telecom and data centres, integrated PV-storage systems, distributed energy resources, deep discharge battery technology, and containerised BESS. As a full-service provider, we also offer modular battery racks, backup emergency power, and zero‑carbon microgrids. Our advanced lithium‑ion and sodium‑ion solutions ensure safety, scalability, and high performance for commercial, industrial, and utility projects across Europe.
Our modular energy storage portfolio ranges from compact lithium-ion batteries to 20ft/40ft mobile containers and outdoor all-in-one storage cabinets with IP54 protection. We are a leading energy storage equipment manufacturer, offering communication cabinets for 5G/telecom, server racks for data centers, and IP54 rated enclosures for harsh environments. Our stackable design allows flexible capacity expansion, while our grid-forming technology ensures stable off‑grid operation. Whether for remote base stations, off‑grid power systems, backup emergency power, integrated PV-storage or large zero‑carbon parks, our products feature advanced thermal management, deep discharge cycling, and compliance with European and international standards. We also provide professional energy storage system installation and after‑sales support across Europe.