Birmingham, UK-based Allsee Technologies has started marketing a digital sandwich board display that’s portable and runs 12-plus hours on a rechargeable battery.
The pitch is that these things are easily positioned wherever they need to be, and don’t need to be against a wall to get power, or require a power cord that becomes a tripping risk.
I like the form factor, and ease of moving around. The units have 44,000 mAh batteries inside. The 700 nits will not win out over direct sunlight, but will do a good job in bright indoor venues like malls. They run Android 5.1, which is a couple of generations behind what is current. That version is good enough for simple signage, though, which is the intent with these.
No idea on price.
Toronto-based Design Science has been doing battery-powered displays for years, and has units running 12+ hours, as well, though I don’t know that the company has done high-brights (more power used) or this sandwich-board style.
Search Alibaba and all kinds of battery-powered screens come up, but, well, good luck with going down that path.