. Storage battery manual, including principles of storage battery construction and design, with the application of storage of batteries to the naval service . are replaced and properly secured in positionin order to guard against overflowing of the electrolyte during the charge. (5) The voltage of the charging lines must always be greater than thesum of the voltages of all batteries or cells connected in series in the circuit. Obviously, this requirement is necessary in order to overcome the counter-electromotive force of the batteries or cells such that charging current can bepassed through t
. Storage battery manual, including principles of storage battery construction and design, with the application of storage of batteries to the naval service . are replaced and properly secured in positionin order to guard against overflowing of the electrolyte during the charge. (5) The voltage of the charging lines must always be greater than thesum of the voltages of all batteries or cells connected in series in the circuit. Obviously, this requirement is necessary in order to overcome the counter-electromotive force of the batteries or cells such that charging current can bepassed through them. In regard to this feature it may be said that thevoltage of the charging line must be at least times the number of cellsconnected in series in the circuit. Thus, if there are 10 cells connected inseries, then there must be at least volts available in the charging linesin order to completely charge the cells. 333 Storage Battery Manual (6) Batteries should be well ventilated while beginning a charge the cell tray covers of all batteries should beremoved in order to afEord proper ventilation of the cells during the Fig. 101.—Showing Method of Testing theHeight of Electrolyte Above Tops of Plates withGlass Tube. Never bring an open flame or allow a spark near a storage battery, espe-cially during or Just after completing a charge, as to do so is to invite disasterfrom an explosion of the gases given off from the battery. If necessary to usea light in inspecting the batteries, a flashlight or a portable incandescentlight should be used. The compartment in which the batteries are locatedshould also be well ventilated periodically in order to prevent an explosive Charging and Discharging Batteries 233 mixture from being formed in the compartment. The general subject ofventilation is covered more fully in a separate chapter. (7) The correct starting and finishing rates should be used in name-plates on the front of the cell trays c
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