As far as I know, VFS-2 are down grade version of VFS-1.
Since there was few FET than VFS-1, KO staff had said that It became that much cheap.
VFS-FR is ESC equipped with reverse. Size is almost the same as VFS-2000 series.
laptop charge unit is a product made from SHINE TECHNICA.
Probably their product is not sold by the outside of Japan.
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