Maintenance-free high capacity lead battery or accumulator

摘要

The invention refers to a gas-tight, maintenance-free high capacity lead accumulator with a sulphuric acid thixotrope (13) as electrolyte. To ensure operatability of the accumulator in upright as well as in horizontal position, the liquid electrolyte released under certain charging conditions has to be collected. For this purpose layers of fibrous web (10, 22) of highly porous and absorbing material are at least partially provided at the edges of the accumulator and above the plate group (1) which temporarily store liquid electrolyte and again release it.