RW3 Equestrian

Horse people!
Solar powered fans, for runins that don’t have a power source…
Any products out there that actually work well?

I’ve tried to find a solar panel/generator/battery that I can plug in a normal fan, and set a timer so it only runs for a portion of the day, to give time for solar battery to recharge. But I’m unsure what would actually work the way I need it to work.
Appreciate any input!