it's a bit safer to put the cardboard between the frame and the tangs, so your not contently bending them...
Also raping a bit of thin string or fishing line under the batter will make it EZer to take the battery out.
Originally Posted by Tikiman12
Make sure your Tabs are making good, strong contact with your battery. A piece of cardboard under the battery will help keep the battery pushed into the tabs.
Also check the board for any broken wires, or broken solder points.