Following is the prompt and detailed response I received from Arken:
Dan, I apologize for your less than satisfactory initial impression. Just within the last week or so, we ran out of the accessory packs. This includes the batteries, battery charger, and SD card. We have more on the way and will ship those to every Zulus order that didn't ship with the accessory pack. Button top 18650 batteries will not work, I have only used flat top 18650 batteries, here is an example of what I ordered on Amazon:
https://www.amazon.com/BENKIA-Recha...-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1 Additionally, 18650 flat top batteries can be picked up at most local vape stores. We look forward to getting you your Zulus accessory pack. Thank you for your support and business.