Objective: To hold batteries in place when the "door" is missing.

Which of the following solutions is more sound in terms of naive physics reasoning?

Options are:
[i] Use scissors or a box cutter to cut a piece of cardboard to hold the batteries in place, then use duct tape to hold down the cardboard on the batteries..
[ii] Use scissors or a box cutter to cut a piece of cardboard to hold the batteries in place, then use duct tape to separate the cardboard from the batteries..
[i]