Finishing Rate. The current in amperes at which a battery may be charged for twenty-four hours or more. Also the charging rate used near the end of a charge when cells begin to gas.
Flooding. Overflowing through the filling tube.
Forming. Electro-chemical process of making pasted grid or other plate, types into storage battery plates. (Often confused with Developing.)
Foreign Material. Objectionable substances.
Freshening Charge. A charge given to a battery which has been standing idle, to keep it fully charged.
Gassing. The giving off of oxygen gas at positive plates and hydrogen at negatives, which begins when charge is something more than half completed-depending on the rate.
Generator System. An equipment including a generator for automatically recharging the battery, in contradistinction to a straight storage system where the battery has to be removed to be recharged.
Gravity. A contraction of the term "specific gravity," which means the density compared to water as a standard.
Grid. The metal framework of a plate, supporting the active material and provided with a lug for conducting the current and for attachment to the strap.
Group. A set of plates, either positive or negative, joined to a strap. Groups do not include separators.