DIY 200Ah LiFePO4 battery < $900

Bert the Welder wrote:
However...... It has to be said that this is a sponsored video. Basically a paid ad. He does state at the beginning that the company "reached out to him" for him to test these. As well, he's making money off the link to purchase in the video's description. I think it would be reasonable to assume the company didn't just pull a battery off the shelf and ship it out. They'd have had one that was carefully made to meet, or in this case exceed spec's. So, IMO, this is an infomercial without the over caffeinated presenter or the professional actor wearing a lab coat.