First time poster but have been playing with desulfators for a little while.
My question is where do you get your batteries to work on? Or more specifically where can you get very cheap batteries to try and revive? Call up auto shops? Talk to recyclers? How about the nice big ones like forklift batteries?
Say you have a source of batteries, such as several old batteries waiting to be recycled how do you test them to see if there are good enough to desulfate? I have heard about shorted cell and a minimum voltage, bulging cases etc. I have also read about people bringing these exact ones back from the dead, though it's hit or miss. How do you test them quickly, without charging. A conductance test? Just a simple "pop the tops and look?" Multimeter?
I have a few old AGM 4Ah batteries that read either -0.5v or very low that seem to be OK so far after watering/charging/desulfating (still too early to tell I think) that failed many of these tests, contrary to the general rules.
Very curious to hear your replies.
My question is where do you get your batteries to work on? Or more specifically where can you get very cheap batteries to try and revive? Call up auto shops? Talk to recyclers? How about the nice big ones like forklift batteries?
Say you have a source of batteries, such as several old batteries waiting to be recycled how do you test them to see if there are good enough to desulfate? I have heard about shorted cell and a minimum voltage, bulging cases etc. I have also read about people bringing these exact ones back from the dead, though it's hit or miss. How do you test them quickly, without charging. A conductance test? Just a simple "pop the tops and look?" Multimeter?
I have a few old AGM 4Ah batteries that read either -0.5v or very low that seem to be OK so far after watering/charging/desulfating (still too early to tell I think) that failed many of these tests, contrary to the general rules.
Very curious to hear your replies.
