Sealed lead-acid batteries for solar applications
Sandia National Laboratories is involved in the development of sealed lead-acid batteries capable of deep-discharge operation. This effort is an extension of existing technology employing an immobilized, starved electrolyte system with internal recombination of oxygen. Since watering is not required and there is no acid mist to cause external corrosion, the battery is maintenance-free. During contracts with Gould and Eagle-Picher, batteries were received quarterly and placed on test. With few exceptions, testing of these batteries has been completed. With proper charging, battery life averaged over 800 deep cycles. This was achieved with both the standard NEMA cycle test as well as a partial state of charge test. Charging voltages above 2.50 volts per cell appeared to be detrimental to the performance of the Gould batteries.
- Research Organization:
- Sandia National Laboratory, Albuquerque, NM
- OSTI ID:
- 5417150
- Journal Information:
- Proc. - Electrochem. Soc.; (United States), Vol. 84-14
- Country of Publication:
- United States
- Language:
- English
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Maintenance-free, 100 ampere-hour, lead acid battery for deep discharge, photovoltaic applications