Battery capacity is the amount of electrical energy a battery can store, usually measured in kilowatt-hours (kWh) or megawatt-hours (MWh). It indicates how long a battery can power a device, system, or grid before needing a recharge.

For example:

• A 10kWh wall-mounted ESS can provide backup power for a home during outages.

• A 3.35MWh liquid-cooled ESS container can support large-scale renewable integration or industrial microgrids.

How is Battery Capacity Measured?

Battery capacity is typically measured in ampere-hours (Ah) and converted into kilowatt-hours (kWh) by multiplying voltage and current over time.

• Small systems: A 5kWh rack battery cabinet is ideal for households.

• Medium systems: A 144kWh air-cooled ESS suits commercial projects.

• Large systems: A 372kWh liquid-cooled ESS delivers high performance for industrial needs.

Why is Battery Capacity Important?

• Energy Security: Ensures backup power during outages.

• Peak Shaving: Large systems like 100kWh–241kWh air-cooled ESS help reduce electricity costs.

• Renewable Integration: High-capacity systems such as the 5MWh air-cooled ESS container store solar and wind energy for later use.

• Scalability: Capacity determines how well ESS can adapt to different applications.

Applications of Battery Capacity in ESS

• Residential Use: Families often rely on 10kWh wall-mounted batteries for daily energy storage.

• Commercial Projects: Businesses adopt 215kWh liquid-cooled ESS for balancing loads and saving costs.

• Industrial Microgrids: Factories integrate 372kWh liquid-cooled ESS to manage peak demand.

• Grid-Scale Projects: Utilities deploy multi-megawatt containers like the 3.35MWh liquid-cooled ESS for renewable storage.

Price of Battery Capacity Solutions

The price of energy storage solutions depends on:

• Battery type (LFP vs NMC)

• System size and design

• Installation conditions

• Auxiliary equipment and control systems

Suppliers generally provide quotations under international trade terms such as EXW, FOB, or CIF depending on project requirements.

How to Select the Right Battery Capacity for Your Project?

• For homes: A 5–10kWh ESS usually meets daily backup and solar storage needs.

• For businesses: A 100kWh–241kWh ESS balances peak loads and improves efficiency.

• For large projects: Containerized solutions like 3.35MWh liquid-cooled ESS containers provide high storage capacity for renewable integration.

How Long Does Battery Capacity Last?

Battery capacity naturally decreases over time due to cycling. High-quality lithium iron phosphate (LFP) batteries, such as those used in 215kWh or 372kWh ESS, can maintain more than 80% capacity after 8000+ cycles, equivalent to 15+ years of service life.

The Supplier of Battery Capacity Solutions

Advanced manufacturers like Dagong ESS provide a full range of products with different capacities, from 10kWh wall-mounted batteries for residential users to multi-megawatt ESS containers for utility projects. These solutions ensure reliable, scalable, and efficient energy storage performance.

If you are interested in energy storage products related to battery capacity, please contact Dagong ESS.
Email: sales@dagongess.com
Website: www.dagongess.com