I would beware, we have been here before.
Remember the "Shadowhawks, Miltechs, Galvastons and XYZs.
Imalent make an 100,000 lumens, I would not call it a torch, "hand searchlight".
You can get their DX 80 off eBay for as little as ?160. I paid about ?200 for mine and it cane on accidentally and burned a hole in its case.
The DX 80 is 32,000 lumens and runs off 8 high discharge 18650 cells.
Common sense dictates that power out needs power in and that you wont get anything serious from any torch you can hold in the palm of your hand.
There are torches on eBay for about ?12 that claim 32,000 lumens. Total fraud.