Dụng cụ nạp pin LR44 Speed Loader

Slide the printed item into the vertical viewing slots near the top of the slot.

Insert a battery on each side, move it down a little and repeat.

Once you have finished inserting batteries, move the loading aid slowly to the bottom and remove it from the vertical slots. The batteries will fall into the place and be correctly oriented.

It is a little snug but that aids with the overall use.