Likewise for boats. It's high time we stop using lead batteries in vehicles where weight matters, and the pricing on this looks great.

I thought about boats as well.

Do you know the weight and dimensions of this?

It looks like it is equivalent to 835 Ah @ 12V. That is 10 lead batteries. You probably can buy more than 3 lead batteries for 300 dollars, but the weight and 10 year warranty does look attractive.

Those would be crap lead acid batteries at $100.

I have 500 Ah in 4 AGM batteries that cost me $1200. If all that 835 is usable I'd have to spend $3600 to come close with the same AGM's I'm using now.