Abstract: A portable solar-powered lighting assembly that includes a lighting device including a light source, a rechargeable battery, and a first engagement interface. The light source is electrically connected to the rechargeable battery. The assembly includes a fastening device including a distal tip, a fastening element, and a second engagement interface. The fastening device is configured to selectively couple with the lighting device in response to the second engagement interface mating with the first engagement interface. The fastening device is configured to secure the lighting device to a surface in response to the fastening device penetrating the surface via the distal tip, and secure the lighting device to a tool in response to the fastening device receiving the tool through the fastening element.

Abstract: Modular and portable solar-powered charging devices are described. The solar-powered device may include a housing, a rechargeable battery disposed within the housing, and a solar panel positioned along an exterior of the housing. The solar panel is electrically connected to the rechargeable battery. The solar-powered charging device is configured to transfer electrical power generated by the solar panel and stored in the rechargeable battery to a second solar-powered charging device when the housing is positioned adjacent to the second solar-powered charging device.

Abstract: Modular and portable solar-powered lighting devices are described. The device may include a handle assembly including a rechargeable battery and a solar panel electrically connected to the rechargeable battery, a mounting assembly selectively attachable to the handle assembly, and a lighting assembly selectively attachable to the handle assembly, the lighting assembly including one or more light sources. The device may have a first configuration wherein the handle assembly is coupled to each of the lighting assembly and the mounting assembly; and a second configuration wherein the lighting assembly is attached to the mounting assembly and not coupled to the handle assembly. These configurations can resemble a flashlight and a headlamp, respectively.