It is a project based on a popular and very convenient in use tester. The whole device is placed in a small housing with dimensions of 10,5 x 5,5 x 22mm. It was prepared by cleaning in the inside from all the unnecessary elements and adding two side latches of metal strip. The battery has to fit the housing, which should tightly close up.
The board was made in thermal transfer method. The tester perfectly fulfills its task up to 1,5M.