There are three basic methods for electrically
connecting batteries to power a device:
1. Pressure contacts is the most common method for connecting to batteries. The contact force should be one half to two pounds force.
2. Soldering to batteries can cause problems due to the intense heat that needs to be applied to the battery during this process. Energizer does not recommend this method.
3. Resistance welding is preferred to soldering due to the significantly reduced battery heating. The weld is controlled by a combination of heat, time and pressure.