ON position flashlight, unscrew compartment = nothing. No juice. I'm sure this all was gone over with a fine tooth comb. No internet investigator without the item in his hands can prohibit it himself.
Maybe if you want to hold the batteries in and use your tongue as a contact... I may reimburse your purchase if you buy one and make a video of you doing this.
It wasn't designed to stun when it's not fully assembled, which is why I asked which video you were watching. Some guys on here are as bad as the RCMP lab.
Another poster already disproved your BS above me.