I don’t understand what were you guys going on about.
The default battery that comes with the headset is Li-ion, the LIP in the model is just part of the name.
The one Paul originally purchased and then cancelled might have been Li-Po, and it would be better not to use those.
The one he did end up buying is Li-ion, not Li-po as he said in his latest update.
And all that information is literally in the descriptions and labels of said batteries. Be careful and read attentiously when purchasing your batteries, people.