FIELD: electricity.
SUBSTANCE: invention is related to the field of electric engineering and may be used to reduce time of a capacity build-up and recovery for nickel-cadmium accumulators after a long period of their storage. According to the claimed invention the accumulators are charged by alternating asymmetric current with the amplitude ratio of discharging and charging current γ and a duration ratio of discharging and charging pulses τ, which are defined on an individual basis for each type of accumulators, by means of two-factor experiment within the ranges of γ=1.1÷7 and τ=0.1÷0.9 respectively, the pause between the charging and discharging pulses is equal to the duration of the discharging pulse, the average value of alternating asymmetric charging current is selected so that the charge takes from 1 hour up to 10 hours, at that the charge is made till the battery reaches the threshold value, voltage control of the battery is made during the pause between the charging and discharging pulses, frequency of alternating asymmetric current should be of any value within the range from 1 Hz up to 50 kHz, the discharge is made by the same current when the value of 1 V is reached by the accumulator.
EFFECT: improving efficiency in recovery of the accumulator capacity due to optimal recovery of an active material at reduction of time for build-up and recovery of the nickel-cadmium accumulators, which is the technical result of the invention.
2 ex
