I'm very new to the ev world, but I'm staying up too late at night trying to learn. I've been checking out this forum and other sources (and thoroughly enjoying kiwi's buildup videos) and came across these batteries at tekbattery.com. They are expensive ($1000.00 US for the car battery), but lightweight and seemingly very powerful. Any thoughts? If they're bad for ev application, I'd love to know why so I can get better educated. Thanks.