It is said that Spirits can drain the energy from batteries. Paranormal Investigators know that new batteries can suddenly die on investigations. 

The idea to this, simply place a battery into the tester and use it as a Trigger Object. Leave it on a table or somehere that can be an active area. Offer the Spirits the energy from the battery! 

If there is any energy drain, the needle on the gauge will respond. You may be suprised at the results! 

This can also be used to test all your batteries before or during an investigation. Handy to have around in your Paranormal Kit. 

Universal Compatable with Battery...  PP3, AAA, AA, C, D, Button type