Charging antimony-free VRLA batteries without float
Here is a proposed much lower float current method to charge non-antimony batteries. Supposedly better than traditional float. Low current float for AGM
Forum Discussion
I cannot either. No idea.
But to gauge full charge I am going to hundredths of a volt so a small difference might matter until I really have a good feeling on exact amp hours in/out (or sometimes as a handy short cut). I actually saw different pages on battery university, one said Voc goes up with temp and one said down, and neither how much.
The volts <-> SG thread had a really good link that looks like it goes up with temp (makes more sense to me). If I can quit avoiding chemistry and research how to convert the molar strength of sulphuric acid to specific gravity, that will be a pretty good theoretical formula. But it does not give the temperature function, just a point value at 77 degrees so I'll have to look into that next.
Jim
But to gauge full charge I am going to hundredths of a volt so a small difference might matter until I really have a good feeling on exact amp hours in/out (or sometimes as a handy short cut). I actually saw different pages on battery university, one said Voc goes up with temp and one said down, and neither how much.
The volts <-> SG thread had a really good link that looks like it goes up with temp (makes more sense to me). If I can quit avoiding chemistry and research how to convert the molar strength of sulphuric acid to specific gravity, that will be a pretty good theoretical formula. But it does not give the temperature function, just a point value at 77 degrees so I'll have to look into that next.
Jim
