The BYD Seagull will be launched with a sodium-ion battery offering a range of 305 km and a price of $11,600. 

The hatchback will come in two versions, one with a 55 kW electric motor and the other with a 75 kW motor, both equipped with a 38 kWh BYD LFP battery capable of a CLTC certified range of 405 km. 

BYD plans to fit sodium-ion batteries to all models priced below $29,000 once production capacity increases. 

Although sodium-ion batteries have lower energy density and slower charging rates than lithium-ion batteries, they are cheaper to manufacture and less affected by cold temperatures.

 Sodium-ion batteries are gaining popularity and are here to stay, with future generations expected to improve rapidly.

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