Storage battery (accumulator battery). Purpose, device and types

10.2.3.e Density of battery electrolyte

Density of the electrolyte is one of the main indicators that characterize the operating state of the battery pack. It shall always be within a certain range. In case if the battery pack is of low-maintenance type, then in summer the density is slightly reduced. But in winter it increases in order to eliminate the possibility of freezing of the electrolyte.

Note
The density of the electrolyte is measured by a special device - a densimeter.