Abstract: The creation provides a kind of project function for the mobile power device, which including control circuit boards, power contact tools, charging the battery units; Both of the power connecter tools and the battery charging units that connect control circuit board to charge and discharge the power so that it can works fluently. The micro-projection which including micro-projection modules and micro-projection lens; the signal, however, is also can delivery elements and messages to control the circuit board. Therefore, this mobile power device creation which with projection functions, it can provide other electric devices to charge and with delivery signal the electric devices of others to the micro-projection device, making the function of project.