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Heiwit Unveils Game-Changing Sodium-Ion Battery for Home Energy Storage

With lithium prices volatile and safety concerns lingering, sodium-ion batteries like Heiwit’s could become the next big thing in home energy storage.

Author

Alan Zhu
June 27, 2025

Italian startup Heiwit has launched a 9.8 kWh sodium-ion battery for residential energy storage, offering a safer, more sustainable, and cost-effective alternative to lithium-ion systems. With 6,500-cycle lifespan, rapid charging, and superior thermal stability, this innovation could accelerate the shift toward eco-friendly home energy solutions.

Key Features of Heiwit’s Sodium-Ion Battery

1. High Performance & Longevity

  • 9.8 kWh capacity | 10 kW nominal power

  • 95% round-trip efficiency | 100% depth of discharge (DoD)

  • 6,500 cycles at 80% DoD – 3x longer than many lithium batteries

2. Superior Safety & Thermal Stability

🔥 Lower fire risk vs. lithium-ion
🌡️ Stable cell temps (27–28°C) even under heavy cycling
❄️ Wide operating range (-10°C to 55°C) – No active cooling needed

3. Ultra-Fast Charging & Compact Design

⚡ Fully charges in under 2 hours (thanks to optimized cell & inverter tech)
📏 Space-saving size (700×480×170 mm) | 130 kg weight

4. Sustainable & Geopolitically Neutral

♻️ Easier recycling than lithium-ion
🌍 No conflict minerals (avoids cobalt, nickel supply concerns)
💰 Lower cost than equivalent lithium systems

Why This Matters for Homeowners?

✔ Safer – No thermal runaway risks like lithium batteries.
✔ Cheaper long-term – Lower upfront cost + longer lifespan.
✔ Eco-friendly – Sustainable materials & recyclability.
✔ Plug-and-play – Works with Heiwit’s 6 kW hybrid inverter for solar integration.

Availability & Next Steps

  • Now available for order (priority given to premium installers initially).

  • Real-world testing underway at Heiwit’s facility in Varese, Italy.

  • Potential to disrupt the residential storage market as sodium-ion tech scales.

The Future of Home Batteries?

With lithium prices volatile and safety concerns lingering, sodium-ion batteries like Heiwit’s could become the next big thing in home energy storage. As renewable adoption grows, expect more affordable, high-performance alternatives to enter the market.

Would you switch to a sodium-ion battery? Let us know in the comments!

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#BatteryStorage #SodiumIon #RenewableEnergy #EnergyIndependence #CleanTech

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