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From: "Jim Wilkins" <muratlanne@gmail.com>
Newsgroups: rec.crafts.metalworking
Subject: Re: Batteries - EV Conversion
Date: Fri, 11 Apr 2025 20:02:59 -0400
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"Jim Wilkins"  wrote in message news:vstnuv$s7al$1@dont-email.me...

LiFePO4 has a higher internal resistance and lower maximum current capacity
than Li-ion or lead batteries.
https://www.litime.com/products/litime-12v-100ah-lithium-lifepo4-battery?
"Note: This 12V 100Ah battery is suitable for energy storage rather than
start-up."
----------------

As part of a different question I asked LiTime if they had anything suitable 
for an EV, and they answered no. Their spec for maximum internal resistance 
is 40 milliOhms though I measured a small fraction of that on a new battery. 
The internal loss would be 4V at 100A and the entire battery voltage at 
300A.