Battery packs: As strong as the weakest cell

Regular concentration checks on battery electrolytes guarantee a safety net in case of power outages. DMA 35 Ampere performs density checks on battery acid in less than a minute!

Full power guaranteed

Many organizations such as transformer stations, power plants or hospitals require a backup power system for emergency situations. These systems are always equipped with a battery pack. In case of a power outage, the battery automatically takes over the voltage supply to keep essential functions alive, and e.g. notifies the central station of the power failure, activates the separator and provides emergency lighting and fire alarms.

A battery pack consists of a large number of electrochemical battery cells, all connected in series. The electrolyte of the cells is usually sulfuric acid. Due to chemical reactions during discharge, the density (or specific gravity, SG) of the electrolyte decreases. The density of the battery acid provides information about the concentration[1]) of H2SO4 and the charging status of the battery. Depending on the result, the user knows whether the battery needs maintenance or has to be exchanged. Regular density checks are a fast and reliable way to monitor the state of charge and to detect the weakest cell(s) of a battery.

As a matter of fact, a battery pack is only as strong as its weakest cell.

[1] www1.ict.fraunhofer.de/deutsch/scope/ae/bleisystem.html

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