Originally Posted by 375inStroke
Here's a 7lb. group 24. Mopar Action talked about them in Feb and Apr 2022. I don't think there's any battery management in them, so that may be risky.
https://4xspower.com/product/xv2400/

These are 15lbs, but include battery management, and have built in, wireless jump start.
https://antigravitybatteries.com/products/starter-batteries/automotive/ag-24-rs/

Here's their propaganda
https://youtu.be/jl3xJMdOoSE



May as well just fill your tires with helium for all the benefit of weight savings you are going to get at those prices.