Random Voltage issue out of nowhere.

2015 RZR 1000 – I haven’t went riding in 3 weeks. I went riding tonight the RZR cranked up fine and idled around the house. I loaded it on the trailer and took it to the trails. I cranked it up again and waited on everyone else to unload theirs. I cranked it on and off at least 2 more times before we left out to hit the trail. We rode about 4 miles down the trail and we missed a turn that we were supposed to take. As I was slowing down to turn around the Power Steering Light came on for a couple of seconds and then went back off. So I turned it off and went to crank again to reset it I thought, but I didn’t have enough power to crank it, so lucky I had my jumper cables and had some one else boost me off. After I got it boosted off I checked the voltage and it was only charging at 10.9 volts. So I started my way back to the truck and the voltage started dropping more and more, about half way back the Power Steering Light was staying on and the Fan quit working from not enough voltage. So I barely made it back to the truck with the RZR temp running at 240+ degrees.

So my question is besides checking the Voltage Output, Battery and the connections what else should I check ? Any help will be appreciated. Thanks in advance.