Patco utilizes different charge algorithms for lead acid batteries, depending on the battery construction. For parallel plate Sealed Lead Acid (SLA) and GEL batteries, Patco employs the Unitrode 2906/3906 charge controller. The algorithm is primarily a constant current up to 80% of charge, switching to constant voltage through full charge, finally switching to a temperature compensated float charger to maintain the battery at full charge
The InteliTender Model 150 is the most versatile of Patco's lead acid chargers. It can be purchased with four different power sources, four different charge voltages, and a wide range of charge currents. To order a Model 150, the following part number must be developed.
AA is the specification for input power. If the unit is powered by a self-contained transformer, AA is left blank. If the power source is an external, UL approved transformer, AA becomes UL. If the unit has a universal switching input, permitting voltages from 95 to 265 VAC, 50-60 Hz, then AA becomes S. If the Model 150 is powered by a DC voltage, then AA becomes D. Model 150S
BB is the ending nominal battery voltage. The Model 150 is available for 6,8,12, and 24 volt batteries.
CCC is the charge current. If left blank, the charge current for the 6,8, and 12 volt chargers is 1.5 amps. For the 24 volt charger it is 1 amp. For batteries whose capacity is less than 12 amp hours, the charge current should approximate a ten hour charge. For a 7 amp hour battery, the charge current should be set to 750 milliamps.
The InteliTender Model 300 is a dual output version of the Model 150. With two fully independent outputs, the Model 300 is a ideal charger for any two battery configuration. While lacking the Model 150's input power versatility, the Model 300 can be configured for three different battery voltages and the same versatility in output current.
The Model 300 part number is configured much the same as the Model 150. Its format is:
300-AA-BBB
AA is the battery voltage, and can be 6,8, or 12 volts. BBB is the bulk charge current. If omitted, the output current is 1.5 amps. The Model 300 is only available with a self contained transformer, operating at a nominal 120 VAC, 60 Hz. An example of a Model 300 designed to charge two 7 amp hour, 12 volt batteries connected in series would be:
300-12-750
