IMPAQ™
Owner’s Manual
AM-IMPAQ-OM
Rev AB October 2018
10
DC Plug Polarity
The charging cables are connected to the DC output of the charger with the red cable to the
positive bussbar, and the black cable to the negative bussbar. The red cable is terminated into
the “+” side of the battery connector, and the black cable is terminated into the “-“side of the
connector. The output polarity of the charger must be observed when connecting to the battery
(read warning above). Improper connection will open the DC fuses in the power modules.
DESCRIPTION OF OPERATION
General
IMPAQ
™ chargers are microprocessor-controlled. The processor is programmable to adapt to
a wide range of battery capacities so that the charging profile can accurately adjust for any
battery size. The charging coefficient is maintained absolutely on all types of batteries at various
discharge levels.
IMPAQ
™ chargers are designed to charge
NexSys
®
, GelBloc, flooded and sealed lead-acid
batteries within the range of the cell and ampere-hour rating marked on the nameplate.
Attempting to charge other battery designs with this charger could cause damage to the battery.
Starting the Charge Cycle
When a battery is connected to the charger, the control board senses the voltage and after a
short delay, the charger starts charging the battery.
Charging Current
Charging current is determined by the battery voltage and its state of charge condition. Charging
current declines automatically as battery voltage rises during the charge. As the battery charges,
the LCD display will output various charge parameters including the percentage of battery
capacity.
AC Power Fail
If the AC power fails with a battery connected to the charger during a charge cycle, the charger
will reset and start a new charge cycle when power is restored. All charger settings as well as
the time and date are preserved.
Series Charging
In series charging, the voltages of both batteries add
up and must match charger’s nameplate
DC Volts
rating. The charger’s ampere-hour rating must be equal to each of the battery’s
ampere-hour rating. Charge cycle will not start unless both batteries are connected.
