7.2.13. Strongly discharged АКБ
АКБ, movements not working for a long time in a mode, for example, in cars stored, are subject to the self-category.
Deeply discharged it is considered the accumulator in which pressure of rest falls less than 11,6 V.Esli pressure makes from 12,2 to 11,6 In the accumulator is damaged. Measure pressure of rest.
At deeply discharged accumulators of electrolits (a water solution of sulfuric acid) consists almost completely of water as the share of sulfuric acid is strongly lowered. At negative temperatures the accumulator can freeze, and the case – to burst.
Strongly discharged АКБ are subject сульфатации, that is all surfaces of plates of the storage battery harden. The electrolit is opaque, it has an easy whitish shade.
If strongly discharged АКБ to charge directly after a deep discharge process сульфатации will renew.
If such storage battery not to recharge, its plates harden even more strongly and ability АКБ to charge reception is limited. It leads to decrease in capacity of the storage battery.
Operations procedure at gymnastics of deeply discharged accumulators having сульфатированные plates
Deeply discharged accumulators having сульфатированные plates, it is necessary to charge small зарядным a current as follows.
Zarjadnyj current establish прибл. On 5 % of capacity of the accumulator, i.e. in this case for АКБ in capacity 60 And/hour зарядный the current makes прибл. 3 And (ampere).
Zarjadnoe pressure (Uмакс) can make макс. 14,4 Century
The fast gymnastics of deeply discharged accumulators are not supposed.