Midwest department, we started our last (several years ago) FO on Falcon equipment @ 80,000 with a six month and 1 year performance bump. Maybe that will give you an idea of what to ask for. The numbers the others are posting would be a good starting point with your experience.
Here is the quote from the Dassault FSA for the 2000EX. Probably the same for the classic 2000. Not sure how much difference it makes but we do have two batteries in the EX.
main batteries in cold weather conditions
MAIN BATTERIES (ATA 24)
Dassault Falcon recommends that...