[jcp123]

Originally Posted by Stubby79

Braille makes light-weight batteries. Your choice of chemistry. https://www.braillebattery.com/

There are other/no-name brands of 12v lithium car batteries. Just make sure you educate yourself as to their winter performance and their reserve capacity.

There's also super-capacitor starting-aids for starting off of small batteries.

Google and possibly ecomodder search are where I'd start, now that you know what to search for.

Winter isn't bad in East Texas. Lows in the 30s and 40s with occasional stints in the teens and 20s. More important is the fact (shoulda mentioned this) as a trucker, it's parked for a month at a time, though as a matter of course I disconnect the battery when it's parked.

I know little about battery chemistry and its properties, advantages, and disadvantages.