Rich electric Invertek SuperCombi SC-1500-12X, User Manual

Page: 39 / 155

Rich Electric Co. “SuperCombi” User Manual V7.19 Copyright 2009
Page 39
3.5 Lead-Calcium:
Calcium batteries charge at lower voltages (14.2 to 14.4 typically) and have strong advantages in
constant voltage or float applications. Water loss can be only 1/10th of antimony cells. However,
calcium plates are not as suitable for cycling applications.
3.6 Lead-Selenium:
These batteries are similar to calcium with low internal losses and very low water consumption
throughout their life. Selenium plates also have poor cycling life.
3.7 Lead-Antimony:
Antimony cells are rugged and provide long service life with deep discharge capability. However,
these batteries self-discharge much faster and the self discharging increases up to five times the
initial rate as the battery ages. Charging the antimony battery is typically from 14.4V to 15.0V, with
a 120% equalization overcharge. While the water loss is low when the battery is new, it will increase
by five times over the life of the battery.
There are also combinations of plate chemistries that offer beneficial tradeoffs. For example, low
antimony and selenium plates can offer fairly good cycling performance, long life, and reduced
watering needs.
NOTE: Consult the battery manufacturer for the recommended batter charging settings for
the battery being used.