I have these Siemen's Powermax cells. They have three thick lines of tab on the front and large bands on the back. I put my voltmeter on the front tabs and got no readings. I had someone once tell me you use the back on the rings. So, I soldered two together from center to edge of the next (what I think would be series) and still, I got no reading. The meter just keeps zeroing when I take a reading.
The cells have been on the shelf since I bought them for about a year. Could they be in need of greater sunlight to get them going. I have heard when they sit this could happen. The light inside should give me some voltage though right?
Here is a picture of them:
http://i24.ebayimg.com/01/i/000/e9/03/e101_1.JPG
