- May 16, 2021
As a general rule you don't add acid. I know its been done, I looked for a tech advice on the subject at work and couldn't find it. I didn't however find an old glass bottle of acid concentrate.On the two newer batteries - went through bulk, absorption and float, then manually equalized (one hour) - moved connections over to older batteries for more charging and let the two newer ones rest for a couple of hours.
6.7v on each battery
Tested SG on each cell, even trying your trick to stir up the water. All cells were basically 1.210 or just below that.
So now what? Add acid?
At work we have some flooded batteries still in service that were manufactured 03/1982. You read the correctly 1982.