Checking hydrometer accuracy with charged battery voltage

HiTech wrote:
So I love the song, but can I call a friend? I need a clue on the video. With luck I won't blow any thing up (this time).

Jim

LOL! The song was meant to emphasize MEX being on point as usual. :)

So I love the song, but can I call a friend? I need a clue on the video. With luck I won't blow any thing up (this time).

Jim

Hmmm would a battery shop have this? Maybe buy a hydrometer from them if it agrees with their acid.

Jim

Hi Tech, do it the old fashioned bass-ackwards way. Get your hands on a flask of guaranteed brand new electrolyte that certifiably has the OEM density posted on the container.

Then go from there...

Lol 3 kids in college and tuition bills almost due.

My idea in the other post about getting the relation of SG to voltage was to try a cheapie and see if it agrees.

Jim

You could buy a Freas and a few others, note the differences and post those here. :)

It seems like a lot of the hydrometers available could easily be .1 or more off just fom posts here. If I could find a $15 one that was half way accurate until I get a Freas I'd be happy but it seems really hard to get info on accuracy or repeatability of the moderately priced units. Especially anything I can find locally.

Jim

I do not see how. The longer a cell sits just after charge cessation up to an hour the higher the gravity climbs because the lag and over run tendency of chemical / electrical relationships. The electrolyte could cool and gain density but the other war round is hard to envision.

Then again I am assuming the measuring instrument is reasonably accurate. A .02 error to me is unacceptable. But an OEM releasing 1.300 FLA to the public would be even more disturbing. Oh well, that's life.

Mex it was not a resting reading if i read BFLs post correctly so I guess it would drop a bit?

Jim