How long will the camera last with a 9-volt battery?
A good new 9v battery will last 4~8 hours on the mini spy camera but shorter on the wireless receiver. It’s recommended you use a 9v 500mA DC adaptor on the receiver for better performance. There are two sorts of power supplies we sell, 8v for the spy camera and 9v for the wireless receiver. These power supplies are specifically made for the spy camera system and will prolong product life.