I have never seem the SG within such close tolerance. By your 0,03 variance, the cell would need to 1,270 - 1,273 as an example.
What I get is more like 1270 - 1,285 on some cell, there is an average but still from the highest to the lowest even when the batteries were newish 5month old, I didnt have anywhere near the tolerances you mention.
Thank for all your help. It took me 5 months to get a handle on how everything operated and since then have been monitoring the SG etc, and have not as yet seen any decline in those numbers.
I think today I will after I reach float take Sg's acrross the bank and see where I am, I did do a good 2,5 hour eg last Sunday.
For interest sake I will let you know.
Another question, what is thought of lead crystal. This seems to be being used here and there, with claims about dod ect, but curious if there is more tangible real world info regarding charge rate and time, and dod vs life etc.
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