Last time @nexusb enquired it was:
For small batches (<20 samples) it'll take about 3 days to process them, while for larger batches (up to 500) it'll be roughly 2 weeks.
https://hotcopper.com.au/threads/lithium-forecast-ev.3983992/page-99?post_id=30878521#.WvAeVdOuxm8
cheers