Operational characteristics of a sealed gas-recombinant lead-acid battery

The authors review the operational characteristics of the ABSOLYTE sealed gas-recombinant lead-acid battery system, providing laboratory and field data as appropriate. Specifically, the areas discussed include: gas evolution under float charge conditions, balance among parallel strings, recovery from abusive overdischarge, long-term stability on float charge, and life projections based on positive grid life. Cells and batteries have been subjected to deep discharge and to abusive 'flat' discharges, in which individual cells have been driven into reversal without catastrophic or immediate destruction. Real-time and temperature and float voltage accelerated-life tests indicate that the lifetime projections made on positive grid corrosion are conservative. Finally, long-term float tests indicate stable charging currents over time and negligible (less than 0.1%) water loss over the battery's life.<>