AA D-u-m-m-y Battery like a Wire D-u-m-m-y batteries or called fake battery setup shell, no electricity current, as a conductor to form circuit. Suitable for remote control, alarm clock, camera, toy, torches or flashlight, razors, etc. When an electronic device or toy requires two AA batteries to work, but the combined voltage of the two AA batteries exceeds the rated voltage of the appliances, a fake battery is needed to replace the battery to reduce the voltage. Fake Battery Function The drink stirrer would go extremely fast on 2 AA batteries, it would splatter all over. Using one of these allows us to run it on half voltage and therefore it ran slow enough to be useful. Package included: 4 Battery Placeholders Size: 1.88 IN(L) 0.39 IN(W) 4 Pcs Weight: 0.68 OZ The fake battery spacer is just an empty shell with a wire going from one end to the other. For cutting the voltage in half with one rechargeable lithium batteries and a Battery Placeholder Cylinder. AAA Fake Battery for Remote Control Read more