Junior Member
Posted January 3, 2018
Pro Subscriber
Hydration and sulfation are similar-appearing conditions: a white deposit that can appear on the plates or case of the battery cell. What is the most likely cause for this condition?
A shortage of water, causing the hydrates to leach out of the plates.
An extended low-voltage condition.
Too much water in the cell, causing the plates to soften.
Over-equalizing the batteries.
Junior Member
Posted January 26, 2018
any tips???Originally Posted by kenner14
Junior Member
Posted January 26, 2018
Pro Subscriber
good luck i will be taken my 3 as well on Monday.
Junior Member
Posted January 27, 2018
Pro Subscriber
An extended low voltage condition
Junior Member
Posted January 31, 2018
Extended low voltage condition causes the sulfation. That would be my answer.
Junior Member
Posted February 26, 2018
Pro Subscriber
sounds good thank you
Member
Posted May 22, 2018
As the battery discharges, Sulfates (SO4) from the Sulfuric Acid electrolyte (H2SO4) and begin to build up on the lead plates (these are the white deposits that can appear). This increases the size of the plates (in extreme cases it could make the cell bulge outward), restricts flow of the electrolyte through the plate (making the battery cell less efficient at turning the chemical energy into electrical energy) and the electrolyte turns closer to water (this is why the specific gravity gets closer to 1.0 during discharge). An equalizing charge is the most effective way to drive those Sulfates that build up on the plate back into the electrolytic solution.
In a typical lead acid battery during discharge, the following equation applies:
Pb + PbO2 + 2H2SO4 yields 2PbSO4 + 2H2O + electrons
In a typical lead acid battery during charging, the equation works in the reverse order:
2PbSO4 + 2H2O + electrons yields Pb + PbO2 + 2H2SO4
Pb = lead cathode (-)
PbO2 = lead oxide anode (+)
H2SO4 = sulfuric acid
PbSO4 = lead sulfate
H2O = water
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