I suspect that's not a good idea.
Your questions are good ones, and might not have favorable answers.

Along similar lines you can buy lithium automotive replacement batteries, which would be a proven solution.
https://www.braillebattery.com/index.php/braille/product_series/green_lite

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-