From ESS News
China's Biwatt Power has launched a new 4.5 kWh sodium-ion battery (SIB) for residential applications.
Dubbed PowerNest R3, the new storage system measures 640 mm x 350 mm x 250 mm and weighs 76 kg.
According to the manufacturer, up to four modules can be stacked together for a total storage capacity of 18 kWh, and up to four stacks can be connected in parallel for a total of 72 kWh.
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