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Energy Storage Sodium Battery
Home » Energy Storage Sodium Battery

Sodium-Ion Batteries for Energy Storage

Polinovel offers sodium-ion batteries for energy storage, from rack-mounted modules to outdoor cabinets. Its rack-mounted batteries feature an 8,000-cycle design and support discharge down to −40°C for home solar storage and backup power, while its outdoor cabinets serve commercial energy projects.
Discharge Down to −40°C for Cold-Climate Storage
 
Polinovel’s sodium-ion batteries support discharge down to −40°C, helping supply stored energy for solar storage and backup power in cold climates. Their wide discharge temperature range makes them a practical choice for projects where winter conditions are a key part of battery selection. This capability is particularly useful for supplying essential loads during cold-weather power outages.
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8,000-Cycle Design for Daily Energy Storage
 
With an 8,000-cycle design, Polinovel’s rack-mounted sodium-ion batteries are built for frequent charging and discharging in solar energy storage applications. Their long cycle life supports sustained daily use, helping reduce replacement needs and deliver lasting value from the battery investment. They are suited to storing daytime solar generation for evening use, when repeated cycling is part of everyday operation.

Sodium-Ion vs. LFP vs. Lead-Acid Batteries

The comparison below highlights the key differences between sodium-ion, LFP and lead-acid batteries for energy storage.
Metric Sodium-Ion LFP (LiFePO₄) Lead-Acid
Cold-Weather Discharge Down to −40°C Model-dependent Reduced capacity in cold
Cycle Life 8000 cycles 3000–5000 cycles 500–1500 cycles
Energy Density Chemistry-dependent Generally high Generally low
Maintenance No watering No watering Watering for flooded types
Storage Applications
Cold-climate storage, daily cycling
Daily solar storage, compact systems Backup power, budget-led projects
−40°C discharge and 8,000 cycles apply to selected Polinovel models. Cycle test: 0.5C, 90% DOD, 25 ± 2°C. Actual performance varies by model.

Polinovel Sodium-Ion Energy Storage Solutions

Explore Polinovel’s next-generation sodium-ion batteries engineered for superior safety, compact design, and consistent energy delivery.

Sodium-Ion Energy Storage Applications

Smart BMS & System Integration

Polinovel’s sodium-ion energy storage batteries incorporate BMS management and CAN / RS485 communication to support battery monitoring and integration with compatible equipment.
BMS
Battery Monitoring & Protection
The BMS monitors battery operating conditions and provides protection functions to help keep charging and discharging within specified limits. Available functions vary by model.

CAN / RS485 Communication

CAN / RS485 interfaces enable battery data exchange with compatible inverters, PCS and monitoring equipment, supporting visibility into battery status and system operation.

Inverter Compatibility

Polinovel supports compatibility checks based on the selected battery and inverter or PCS model. Voltage range, charging settings and communication protocols are reviewed to match the project’s requirements.

Flexible Capacity Expansion


Polinovel’s compatible sodium-ion battery modules support parallel connection to increase total storage capacity while maintaining the system’s nominal voltage. This allows capacity to be matched to current energy needs, with room for future expansion as demand grows. Expansion planning takes battery compatibility, BMS communication, and inverter requirements into account to determine a suitable configuration.

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Why Choose Polinovel

1

Manufacturing & Quality Control

Polinovel develops and manufactures battery solutions with a focus on product quality and consistent production. Contact the team for model-specific specifications, test documentation, and quality control information to support your purchasing review.

2

Solutions Matched to Your Project

From battery modules to outdoor cabinets, Polinovel offers sodium-ion storage options for different project requirements. Battery selection considers capacity, installation space, operating conditions, and equipment compatibility.

3

Technical Support for Integration

Polinovel’s team helps review battery configuration, communication requirements, and inverter or PCS compatibility before purchase. Installation guidance, warranty terms, and after-sales support can be discussed for the selected product and project.

FAQ

Are sodium-ion batteries suitable for solar energy storage?

Yes. Polinovel’s sodium-ion batteries can store surplus solar energy for evening use or backup power. The battery and inverter configuration should match the site’s daily energy needs and intended operating mode.

How do I choose the right battery capacity?

Can sodium-ion batteries operate in cold climates?

Will these batteries work with my inverter?

Can I add more batteries to expand capacity?

Get Your Custom Sodium Energy Storage Battery Solution
Tell us your application — starting, motive power, or storage — and we’ll configure a battery that fits your voltage, capacity, and size requirements.
⚠ Before submitting:​ Our products and solutions are designed for B2B applications. Unfortunately, we are unable to assist with personal, residential, or single-unit/home requests. Please ensure your inquiry is business-related.

 

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