NOTE: This item is a customer return with a suspected faulty ESC and fully working FC, though both the ESC and FC are untested and sold as-is, hence the price. This item comes with no warranty or support.
The fault reported with the ESC is low/unusual resistance across motor pads, indicating that one of the 4 ESC’s may be faulty. Again, note the exact nature of the fault is untested and may be more severe, or may not be present at all.
Please find the original item listing here: https://www.unmannedtechshop.co.uk/product/mamba-f722-s-f60-pro-flight-stack-with-bluetooth/