Service life of AGM batteries
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| Item | Explanation |
|---|---|
| 1 | Available capacity [%] |
| 2 | Mileage [thousand km] |
| 3 | AGM battery |
| 4 | Lead-calcium battery |
| 5 | 50 % capacity limit |
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 battery 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.