Service life of AGM batteries

Fig 1: Service Life Graph Of AGM Batteries

Courtesy of BMW OF NORTH AMERICA, INC.

In contrast to conventional lead-calcium batteries, the sulfuric acid in a battery with fleece technology is not held freely in the battery housing.

Rather, 100% of the sulfuric acid is bound into the mats of the glass-fibre fleece (separators). For this reason, no acid can escape if the battery housing is damaged. In addition, the AGM battery is sealed to be airtight. This is possible because the gases are converted back into water by the permeability of the separators.