How Charging the Lead Acid Battery(5)? How Charging the Lead Acid
Battery(5)? Plastic SLA batteries arriving from vendors with less than 2.10V per cell are rejected by some buyers who inspect the battery during quality control. Low voltage suggests that the battery may have a soft short, a defect that cannot be corrected with cycling. Although cycling may increase the capacity of these
batteries, the extra cycles compromise the service life of the battery. Furthermore, the time and equipment required to make the battery fully functional adds to operational costs. The Hawker cell can be stored at voltages as low as 1.81V. However, when reactivating the cells, a higher than normal charge voltage may be required to convert the large sulfite crystals back to good active material. Caution: When charging a lead acid battery with over-voltage, current limiting must be applied once the battery starts to draw full current. Always set the current limit to the lowest practical setting and observe the
battery voltage and temperature during the procedure. If the battery does not accept a normal charge after 24 hours under elevated voltage, a return to normal condition is unlikely. The price of the Hawker cell is slightly higher than that of the plastic equivalent, but lower than the NiCd. Also known as the 'Cyclone', this cell is wound similar to a cylindrical
NiCd. This construction improves the cell’s stability and provides higher discharge currents when compared to the flat plate SLA. Because of its relatively low self-discharge, Hawker cells are well suited for defibrillators that are used on standby mode. more info:
www.good-battery.co.uk