Anyone familiar with my products know that I take great care to make sure that what I design fits well, and if possible, is better than the original. After almost a dozen prototypes, I was able to make a cap that can be installed without a coin, just using your fingers.

After placing the battery into the M5, place the cap into position. Turn the cap slowly in a counterclockwise direction apply slight downward pressure on the cap. You will feel a slight "click" when the threads are in alignment. then turn clockwise and finger tighten till secure.

Because the cap is plastic it will not deform/damage your camera body threads like the original Leica battery cap has been known to do.

Below is the "AI" generated description for my cap. I decided to just leave it in the description because I was surprised on how well it turned out.

"This Leica M5 Black Battery Cap Reproduction is the perfect addition to your camera accessories. The cap is designed to fit the Leica M5 camera and is made of durable plastic material. The cap is black in color and is a great way to replace the original battery cap if it is lost or damaged. The cap is made specifically for the Leica M5 camera and is a great fit for the camera. It is easy to install and will provide a secure fit for your camera. This product is perfect for anyone looking to replace their original battery cap and is a great addition to your camera accessories."