Quote Originally Posted by Marc Stager View Post
While on the subject of meters. I have a Luna-Pro F, and I just inserted a new Lithium 9V battery. The battery test button sends the needle off the scale, like it is getting way too much voltage. Should I not use lithium and go beck to regular alkaline cells like a Duracell or Energizer, or is there an internal regulator in the Luna-Pro which will still give me accurate readings with a strong battery. I prefer to use the long lasting lithium cell if it doesn't throw off the meter.
Welcome to APUG!

When compared with alkaline cells, lithium batteries respond quite differently to loads.

Your Luna-Pro F pre-dated lithium cells by a considerable length of time. It wasn't designed with them in mind.

My experience with the non-F version of the meter leads me to the belief that the regular alkaline batteries last a long time anyways.

I wouldn't use one unless I had something from Gossen that indicated it was okay.