It won't stay on
I am very disappointed with this.  I bought it early this spring when it was cold.  When it finally arrived the heat had set in.  I did plug a pack into it and all the lights came on, so I thought I was good to go.  After the last front went through things cooled down but I wasn't worried.  I had my heated pad.  I plugged it in, turned it on and pushed it to medium heat.  No problems there.  I then went and hung the bear bag and came back and it had shut off.  Hmmm, not what I expected, but maybe I had bumped it off.  I turned it back on, push the button to blue (medium) and sat down on it.  I could feel it heating.  Yay!  For less than five minutes and then it shut off again.  Okay, maybe this battery pack is not charged.  I switched packs and it did the same thing.  I switched packs again and again it shut off in less than 5 minutes.  I said screw it and plugged it directly into my Bluetti 200.  Same thing, off in less than five minutes no matter what setting it's on.  If I'm doing something wrong, please tell me.  But short of that this thing doesn't work...unless you only need about 3 minutes of heat.  Too late to return it so sucks to be me, or anyone else that buys this.
Rating: 1 stars