This sounds like GSE Ground Support Equipment.  This would be a new product line for Electrovaya which would tend to diversify the products produced somewhat.  This shipment may be too late in the quarter to count as revenue and may just show up on accounts receivable for Q1.  

As time moves on there may be other pieces of GSE needing a good battery.  The military is moving forward with the electrification of their equipment.  

This battery most likely came out of Mississuagua, Ontario with Jamestown scheduled to pick up the line this next year.  Mid 2024.