Spade connector. I'm in the UK, there may be regional differences in the most widely used name. I think Lucar was a brand name, from their use in automotive products by the British firm Lucas. Faston seems common in the US.
In addition to Criggie's note about cable temperature, be aware that the colour of the plastic cover on the crimp section is significant; it indicates the range of wire size that can be crimped into it, so it is loosely linked to the current rating. Check the datasheets for your chosen manufacturer, or copy the existing rating. They are likely to be roughly standardized between manufacturers, but I wouldn't guarantee it.