Check engine light, power steering light, and headlights shut off

My 2015 1000 has been sitting in the garage for about the past month or so. I went to take it down the street tonight, and the headlights started to flicker off. I turned the machine off, and then back on. Seemed ok until I got to a certain RPM, then the headlights and the gauge would turn off until I dropped back below that rpm. I lost power steering and the CEL came on. I also noticed a loss of power and when I would come back down to an idle, the engine struggled to run and even died.

Any ideas on what could be going on? Seems to be charging charging correctly. As a side note, the battery has been on a trickle charger. It’s actually headed to the dealer this next week for warranty work, but wanted to ride this weekend.

Thanks in advance for any advise!