What happens if a low state main battery is charged below 22V DC?

When the main battery voltage drops below 22V DC, it signifies a low state of charge, which can lead to various issues for the battery. Batteries operate within specific voltage ranges to ensure proper functionality and longevity. When charged below the recommended voltage level, irreversible chemical reactions can occur, potentially resulting in battery failure.

Batteries that consistently operate below their rated voltage may suffer from sulfation or other forms of degradation due to the altered state of the electrolyte. This not only diminishes their ability to hold a charge over time but can also lead to complete failure, necessitating battery replacement.

While charging the battery or other options may seem beneficial, acknowledging the consequences of allowing the battery to remain in a low state of charge is critical to maintaining battery health and performance.