Super safe 500W 690Wh na-ion sodium portable power station from China

1. Extreme Low-temperature Performance

● It retains 85%~92% of its rated capacity at -20°C, and can still discharge normally at -30°C.

● Ideal for alpine camping and emergency power supply in northern cold winters. The internal heating film inside the power station can be eliminated, simplifying structural design and cutting manufacturing costs.

2. Enhanced Safety & Higher Resistance to Outdoor Impacts

● Its thermal runaway temperature is much higher than that of lithium iron phosphate cells. It will hardly catch fire or explode under nail penetration, extrusion and impact conditions, which well addresses higher risks of transportation, drop and compression for outdoor power stations compared with indoor energy storage products.

● Free from the risk of separator puncture caused by lithium dendrites, it has a much lower swelling rate under long-term bumpy operation, resulting in fewer after-sales failures.

● It features strong tolerance against overcharging and overdischarging, offering greater fault tolerance for BMS protection strategies.

3. Downward Long-term Raw Material Cost Trend

Sodium resources are abundant worldwide, with no reliance on lithium, cobalt or nickel. Its cost is barely affected by lithium price fluctuations. Upon large-scale mass production, its cost per kWh will be lower than lithium iron phosphate, bringing stronger competitiveness in overall product pricing.

4. Ultra-simplified Circuit Design & Greatly Reduced Failure Rate

Built with a single 230Ah sodium-ion cell without cell series connection, it eliminates inter-string voltage difference issues. This leads to lower BMS cost, simpler program logic, smaller PCB size, as well as much easier development, commissioning and after-sales maintenance.

5. Uniform Heat Dissipation & Superior Thermal Safety

With only one individual cell as the heat source, heat distribution is uniform without mutual thermal interference between adjacent cells. Combined with inherent safety merits of sodium-ion batteries, the whole unit carries far lower risk of overheating and thermal runaway than multi-cell lithium iron phosphate battery packs.