Ron,Thanks for the response.I looked at the photo and it doesn't give the diameter of the plug. I scaled the drawing and got an approximate diameter of 1.4 inches. The batteries I have an opening of about 0.745 inches, so I don't think they will fit. You drawing is in metric but I understand metric.Your price is fine but I would have to turn an adapter which would stick up higher than I have room for.Thanks anyway,Ken Martindale