https://www.amazon.com/gp/aw/d/B01M5C23SV/ref=mp_s_a_1_3?ie=UTF8&qid=1502726589&sr=8-3&pi=AC_SX236_SY340_QL65&keywords=lg+v20+charging+kit&dpPl=1&dpID=41hQccKVuQL&ref=plSrch hopefully this works. Don't know if you need it now but if you can wait I would. The price usually goes down.

Tried asking this elsewhere but can the iPossible battery be charged with one of these?

amazon is where i got mine

https://www.amazon.com/LG-Charging-BCK-5200-International-Warranty/dp/B01M5C23SV/ref=sr_1_4?s=wireless&ie=UTF8&qid=1500924082&sr=1-4&keywords=lg+v20+battery

How big does that case feel? And can I swap out that big boy battery with other regular ones? I just ordered this.

LG usually does one OS update for flagship devices, so it is just a matter of which revision of Oreo they release for the V20, since they skipped Nougat 7.1.x altogether.

Since it is a removable battery device, bought 3 additional batteries (one being the BCK-5200) for it, since they are relatively inexpensive now.

Am still primarily using the Xperia Z5 Premium Dual, but as soon as a more recent Security Patch or Oreo is out for the V20, may change to it as personal primary device.

Current Amazon price is $33.22.

Yep got mine in amazon.

https://www.amazon.com/LG-Charging-BCK-5200-International-Warranty/dp/B01M5C23SV/ref=sr_1_1?ie=UTF8&qid=1493217097&sr=8-1&keywords=lg+bck+5200