Sodium-Ion Batteries

Sodium-ion is the chemistry to watch for stationary storage where abundance, low cost and cold tolerance beat maximum energy density — EGbatt offers cells and packs for the right duty cycles.

Overview

Sodium-ion batteries use sodium instead of lithium, which removes the cobalt and much of the cost and supply-risk exposure of lithium cells. They tolerate cold better than LFP and avoid the thermal-runaway nerves of NMC, at the cost of lower energy density and a still-maturing cycle-life dataset. For stationary storage — especially balanced, temperature-managed sites — sodium-ion is an increasingly sensible choice. EGbatt supplies sodium-ion cells and packs where the duty cycle favours cost and safety over Wh per kilogram, and we will tell you plainly when LFP is still the better call.

Key specifications

SpecificationValueWhy it matters ChemistrySodium-ion (Na-ion)No lithium or cobalt in the cathode. Energy densityLower than LFP (~100–130 Wh/kg)Fine for stationary; not for weight-critical mobile. Cold performanceBetter low-temperature behaviour than LFPHolds capacity where LFP needs heating. Cycle lifeImproving; quoted per projectAsk for the tested condition before specifying. CostLower material cost, less supply riskAttractive for large stationary banks.

Typical applications

Stationary grid and C&I storage: Cost-led, temperature-managed sites.
Cold-climate storage: Where LFP would need heating.
Price-sensitive deployments: Abundance-driven material cost.
Pilot and R&D projects: Early adopters validating the chemistry.

How to specify & buying guide

Use sodium-ion where weight is not the constraint and cost/safety lead — not for mobile or space-limited packs.
Ask for the cycle-life test condition; the chemistry is maturing and datasets vary by supplier.
Confirm cold-performance claims against your minimum site temperature before specifying.
Let EGbatt compare LFP vs sodium-ion for your duty cycle — we will recommend the honest winner.

Engineering & manufacturing at EGbatt

EGbatt grades every LiFePO4 prismatic and cylindrical cell on capacity, internal resistance and self-discharge before it enters a pack. We ship matched batches with per-cell test data keyed to serial numbers, so your production line is not sorting cells on arrival. Bulk cells, welded modules and complete packs are all built under the same quality system.

Certifications & compliance

UN38.3 — Mandatory lithium battery transport test (altitude, thermal, vibration, shock, external short). Required for any cross-border shipment.
IEC62619 — International safety standard for industrial Li-ion cells and batteries; expected by EU and most APAC buyers.
MSDS — Material safety data sheet for handling and shipping.
CE — EU declaration of conformity for the applicable directives.

Frequently asked questions

When should I choose sodium-ion over LiFePO4?

When the application is stationary, weight is not critical, and cost or cold tolerance leads. EGbatt will recommend LFP if energy density or proven cycle life matters more.

Is sodium-ion safe?

It avoids the thermal-runaway behaviour of NMC and is generally safer than high-energy lithium chemistries; still handle to UN38.3 for transport.

What is the cycle life?

Improving rapidly; we quote the tested condition (DoD, rate, temperature) for your project rather than a generic number.

Is it cheaper than LFP?

Material cost is lower and less exposed to lithium/cobalt supply risk, which shows up on large stationary banks.

Request a quote

Send us your voltage, capacity, dimensions, certification target and annual volume. Our engineering team returns a proposal within three working days. Start your RFQ or review our custom pack capabilities.

Request a LiFePO4 quote

Tell us your product, volume and specs — our engineering team returns a proposal within three working days.

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