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From: "Jim Wilkins" <muratlanne@gmail.com>
Newsgroups: rec.crafts.metalworking
Subject: Re: Got 4Ah, not 5Ah, battery 18V (20V) - done right thing?
Date: Sat, 18 May 2024 22:33:23 -0400
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"Bob La Londe"  wrote in message news:v2b0j1$2u9ft$1@dont-email.me...

On 5/17/2024 5:56 PM, Jim Wilkins wrote:
>...

>I have a bit more experience with marine deep cycle lead acid batteries, 
>and I don't think its as big of a deal as you think. ...
>Bob La Londe

I post what I've seen at reliable sources, it's as cautious as the battery 
manufacturers choose to be.

Personally I test batteries by loading them down with a carbon pile until 
they scream for mercy, and rarely mention the results because they vary so 
widely. I tested stuff to and beyond its limits professionally and have 
acquired or built the gear to find those limits at home. I don't blow up 
batteries any more but I have tested circuit breakers to destruction.

UL "safety" testing is -dangerous-, much smoke and flame. The old theatre 
curtain recipe of dipping cotton cloth in a solution of alum and borax 
really does let it pass the vertical burning test.
https://elteklabs.com/test-capabilities/material-tests/flame-fire-hazard/