What does low-specific gravity in a wet cell battery typically indicate?

Low-specific gravity in a wet cell battery typically indicates a problem with the battery. The specific gravity of the electrolyte is a measure of its density, which correlates to the state of charge of the battery. In a healthy and fully charged lead-acid battery, the specific gravity typically ranges from 1.265 to 1.300. If the specific gravity is low, it suggests that the battery is insufficiently charged or that there may be issues such as sulfation or internal short circuits.

A low reading can indicate a failing battery, as it reflects a diminished capacity to hold charge. The electrolyte might be diluted or there could be deterioration in the battery plates. It's essential to diagnose and address low-specific gravity, as it serves as a warning sign of potential battery failure if not remedied. Thus, recognizing low-specific gravity as a signal of trouble helps in maintaining the battery’s health and ensuring reliable operation.