Review on Fosa Mini Projector Portable 1080P LED Projector for Home Cinema Theater, Indoors/Outdoors – Support Laptop PC, HDMI Input. Perfect Pocket Projector for Party, Camping, and Great Gift Idea! HDMI Cable Required. by Charles Baker

The projector works well when mounted on a wall with the adapter provided. However, an adapter for external battery packs is missing. When I got one, the projection hoops were so dim I couldn't see it with the paper a few inches from the lens. This is a good projector for home use and the picture quality isn't bad, but don't be fooled for a second, this device is not intended for camping or outdoor use unless it is close to an outlet. Also has a switch to switch to the projector built-in battery, but does not have a rechargeable battery in the projector. So what's the point? Generally do not buy. Spend a little more money and get something that doesn't require external cables (HDMI) and battery adapters it can't even use.