Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 181
volt-age not being allowed to drop below 1.8 at the normal 8-hourrate nor below 1.75 at the 4-hour discharge rate. The cell should not be allowed to stand discharged for anylength of time. If a battery has to stand idle for several months itshould be charged monthly because even a small leakage… … Fig. 172.—Hy-dro meter fortesting the spe-cific gravity ofthe electrolyte. Art. 186]- STORAGE BATTERIES 157 gravity and until the cell has been gassing for about 5 hours, onemay then be reasonably sure that no sulphate has been left on theplates. Evaporation of the electrolyte should be made good…
Electrical engineering
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