Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

BS

Symbols

Battery string

A battery string is a group of cells or modules connected in series to reach the operating DC voltage of an inverter, UPS or DC system. Several strings may run in parallel to increase capacity, and each string normally has its own protective device and disconnect so that one string can be isolated without shutting down the others.

Drawing use

SLD / Schematic

Application

Microgrid systems

Reference family

IEC / IEEE / ANSI

A distinction that matters

A string is one series chain; a battery bank or rack may contain several strings in parallel.

Full referenceAdd to legend

BAT

Symbols

Battery

A battery representation identifies an electrochemical source or energy-storage element. The generic depiction can suggest cells or polarity, but it does not determine the number of cells, chemistry, voltage, energy capacity or protective equipment in the selected system.

Drawing use

SLD / Schematic

Application

Microgrid systems

Reference family

IEC / IEEE / ANSI

A distinction that matters

A battery is a storage element. A BESS includes additional equipment and controls; the terms do not identify identical scope.

Full referenceAdd to legend

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.