aluminum plate hand lamp battery

Đèn pin tự tạo Pin nhôm không khí 2W

Self-power Generating Emergency Flashlight Energy Generator 1. Descriptions: This self-generating flashlight is a portable emergency lighting lamp. Unlike regular flashlights, it applies the technology of aluminum air battery. This lamp uses aluminum as anode and graphene as cathode to produce electricity itself after adding water from the bottom of its body. It is a small energy generator which only weighs 270g. The self-generating flashlight could be stored more than 10