Keith’s presents us a project easy to build and sometimes useful around the house. I had my moments when I wished I had a battery meter. If you had the same.. maybe now its time to build your own battery meter.
The main piece of the meter is the “meter board” which you can buy from an electronics store.. or you can recover it from an old multimeter. I recommend you use a new one. You will avoid trouble. If you decide to build it go to Keith’s electronics blog for details on construction.