Good price for these batteries. I have a few devices that use this size. Sometimes I get old cameras that use these for the light meter.
Data Cable for Chinese Digital Calipers and Linear Scales Custom DRO Project
Jan 09, 2016
Better than destroying your caliper
Sure, you could solder wires directly to the 4 pins. In my opinion that would limit the usefulness of the caliper. With this cable you can connect to your caliper when you need it. I connected this cable to a DB9 D Sub connector. I built a circuit to shift the voltage levels up to a level an Arduino could detect. The Arduino can be programmed to read the caliper signals. From there you can go in lots of directions. Just run a search, you'll find lots of examples of programs and circuits to build on.