The Solar Mars Bot, by portable power company Jackery, is a concept for a ground-based solar panel with wheels. The idea is that it rolls around, autonomously, to find the sunniest spot nearby, then deploys its panels in alignment with the sun.
"The Jackery Solar Mars Bot is a game-changer for outdoor enthusiasts who need access to reliable power. This intelligent service robot can autonomously navigate outdoor environments, tracking bright light for photovoltaic power generation or recharging at designated charging piles, providing worry-free power for camping, RVing, off-grid living, and emergency situations."
The energy harvested would be stored in a lithium iron phosphate battery. Delivery would be via USB-A, USB-C and ordinary household sockets.
There's no word on whether they're actually prototyping the thing, so I'm guessing it's just to gauge consumer interest.
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