Originally Posted by SV Demeter
Guess the smart thing would be to first check sg of my cells and see if there is any need to eq in the first place. Thanks folks.
Bingo... An even easier method is to know your "normal" morning voltages or normal loaded voltages under your average loads. If this voltage begins dropping from where you are used to seeing it, then that may signal its a good time to check the SG.
I see lots of batteries destroyed by people over checking SG and contaminating the cells. Every time you open the cells you run a risk of contaminating them by crud and crap falling in there. Even a little foreign mineral content can begin to drop the gassing voltage of the battery
Many owners also don't properly store their hydrometers and they can become contaminated too. A dedicated Tupperware cleaned with distilled water
is the best place to keep your hydrometer, and only your hydrometer.
Personally I switched from a high quality Freas hydrometer to a sight refractometer. The refractometer uses a single
droplet of electrolyte vs. filling & draining multiple ounces of electrolyte in each cell every time you check it. I find the little glass eye dropper is easier to keep from getting contaminated than a large hydrometer. I also find the refractometer easier to read but that's probably just my personal observation.
One option when equalizing is to split off part of the bank and equalize only the disconnected batteries. I generally prefer to do them in pairs if 6V but on a large bank this takes time.. Once half the bank is done you then switch the wires and do the other ones that were powering the loads.
If you've been charging
with absorption voltages at 14.6V - 14.8V it is unlikely you need an aggressive EQ cycle at 4 months. If you've been charging at lower voltages and not getting to full very often you may need a short EQ cycle..