Help Needed: Is there any way to tell which batch a Bitmain S9 came from by the serial number?

I am trying to figure out which batch my S9's came from. I purchased them through a third-party and wanted to know if they came from different batches and if so, which month/year.

I was able to check which batch (time period) the PSU's came from because they have a 365 day warranty and I was able to check (https://service.bitmain.com/support/warranty) how many days were left on the warranty to deduce the date of item dispatch, but the warranty has already expired on the S9s (S9s only have 180 days warranty vs PSUs 365)

Submitted October 30, 2018 at 09:20AM by victumsempra http://bit.ly/2EOUQoc