When they don’t even bother to say the battery chemistry.
When they don’t even bother to say the freshness date.
That likely means these are lowbrow zinc chemistry, half the capacity of alkaline chemistry batteries. “Heavy Duty” often means zinc but there is no official certification.
With who knows what expiration date.
Edit: does say expiration date Dec 2021. Ouch. Use all 96 of them up within 6 months.
Heavy duty is the name used in the industry for Zinc-Chloride.