What reduces life to your automobile accumulator? Part 2
Holding in hand the household areometer for measurement of density of electrolyte, it is necessary to remember that it is graduated for work at 20 (25) degrees Celsius that is surely specified on its scale or in the passport. It is electrolyte temperature . If you measure density with a heat - a heat or among fierce winter - consider, please, the amendment. And it is as follows: at a temperature of electrolyte more than 20 (25) degrees by each 10 degrees add to the measured density 0,007 g / cubic cm from above, at a temperature less than 20 (25) - respectively take away 0,007 g / cubic see
So, electrolyte density. In a normal state it has to make from 1,24 to 1,30 g / cubic see. If density of electrolyte is less than lower threshold, then the accumulator should be recharged. If above then to add the distilled water. Do not add electrolyte to the accumulator at all if density even after charging does not rise to the lower threshold. Except harm, you will bring nothing to the worn-out accumulator (most often low density speaks about wear) - excess amounts of electrolyte as, however, and its increased density, accelerate destruction of a lattice of positive plates.
As other signal for recharge serves tension on accumulator plugs at the opened chain. At rest it has to make not lower than 12,5 Century
you are familiar with the term “ unattended " accumulator; ? It does not designate total absence of need for service at all. Such term is entered within GOST 959 in connection with emergence of new calcic alloys which use at production of a lattice of a plate leads to decrease “ vykipaniye “ waters in the accumulator to extremely low values, but in any way not to zero. However in case of observance of service regulations of the accumulator, the dolivka of the distilled water can not be necessary during all warranty period.
Sometimes consumers pay attention to muddy color of electrolyte and decide to replace it pure. It cannot be done. Except violation of more or less exact content of sulfuric acid (an electrolyte basis) in each can, a deposit from a bottom banks, getting on the top edge of a package of plates, can lead to short circuit.
The means flashing on sale “ for extension of service life “ the accumulator do not deserve attention because of discrepancy of the name and action to the accumulator. It is good if such means do not influence service life in any way! The effect can be also the return. Any of producers of accumulators does not let out similar means.
One more trouble about which consumers from time to time forget - it is impossible to store the discharged accumulator at a negative temperature at all. If loaded does not freeze and at minus 60 then discharged even at minus of five can turn in “ ice brick “. Electrolyte freezing almost completely puts the accumulator out of action. The reason - violation of structure of active weight and a lattice of plates, and sometimes and integrity of a monoblock.
We summarize these and previous articles. Reasons of aging and wear of accumulators a little. The first - loss of active weight from a plate lattice. Despite addition by producers in the active mass of fibrous material, vibration gradually, but inevitably creates the dirty deed, practically shaking out active weight from lattice cells.
The second - corrosion of a lattice of positive plates. Owing to the fact that, generally speaking, the positive plate works in the conditions of continuous oxidation at charging not only the active weight, but also lattice material is involved in process. One of measures for decrease in influence of corrosion is the thickening of a lattice of positive plates in comparison with negative. The constant recharge, and also the increased density and temperature of electrolyte lead to acceleration of corrosion. For this reason accumulators in tropical execution have regularly reduced electrolyte density.
The third - sulphation of active weight. The discharged accumulator as a part of positive and negative plates contains lead sulfate. This normal phenomenon, it is called reversible sulphation. But storage or operation of the accumulator in the discharged state leads to lead sulfate crystallization (irreversible sulphation) then it is almost impossible to transfer it to an initial state.
Perhaps, all this that can depend on consumers at operation of modern accumulators. Do not forget to read the instruction attached to the accumulator and to get acquainted with conditions of service of the accumulator by the service organization. Remember that non-compliance with service regulations is a reason for removal of your accumulator from a guarantee.