Hybrid battery dead?

I pay pretty close attention to the activity on my dash from the hybrid battery charging screen while I'm driving. I noticed some out-of-the-ordinary charging patterns going on, for maybe a little less than a week before the red triangle of death showed up. During this time prior to the triangle showing up, the car would go from nearly a full HV battery charge when parked to being fully depleted when I would drive it the next day basically. It would go from around 4 bars on startup in the morning to fully depleted within 200 feet. Now when red triangle showed up, the car still ran but now the charging patterns were much more insane. It would charge all the way to full, then still be trying to charge the battery more at a completely full charge. Would go from full bars to 1 in an extremely short amount of time. Just completely wacky charging patterns being displayed but still driveable. I'd guess I put about 30 miles on it or so before the car just wasn't charging anymore at all. I drove to the store, came back out and it was showing 1 bar and did not move from that 1 bar. No charging at all being shown. Car felt like the emergency brake was engaged while trying to accelerate up to about 30, then at 30-35 or so it would be somewhat normal feeling, but still no activity from the battery, just 1 bar and nothing. Car has 190k on it but the battery was replaced at 150 with a refurb about a year and a half ago. Car just recently had the inverter coolant pump go bad, which I replaced, about 1000 miles ago.

I did get codes during that first week while hybrid battery was still somewhat normal(triangle had just come on). Codes were C1300 and C1310. Does this behavior sound similar to anyone else's experience? Something else of note is that the blower on the passnger side backseat has come on full blast without me doing anything to it. Had another prius with a bad battery that did the exact same thing. I'm pretty certain it's the hybrid battery but is there anything else it is likely to be?

 

Appreciate that detailed response. I have a lifetime warranty with green bean battery so we'll see how that goes. Either way, I'm going to post a detailed review of that process here on the forums for people to know what they're getting themselves into -- good or bad.