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Notes for IQ Charger Adjustment Limits:
• All settings have absolute minimums and maximums, shown by the heights of the five rectangular
boxes. Those settings in each rectangular box share the same absolute limits. The absolute limits vary
according to cell chemistry, as shown in the separate graphs for lead-acid and nickel-cadmium battery
chemistries.
• There also are relative limits between settings. Settings must be in this order:
OV Shutdown ≥ HV Alarm
HV Alarm ≥ (Equalize Charge + 2% Vnominal [2])
Equalize Charge ≥ Float Charge
Float Charge ≥ (Battery Check Minimum DC Bus + 2% Vnominal [2])
Float Charge ≥ (Battery Discharging Alarm + 2% Vnominal [2])
Battery Discharging Alarm ≥ Low DC Alarm
Low DC Alarm ≥ End of Discharge Alarm
2
Flooded lead-acid and valve-regulated lead-acid cells are 2.000V/cell nominal, so the 2% margins are 0.040V/cell
for these types. Nickel-cadmium cells are 1.250V/cell nominal, so the 2% margins are 0.025V/cell for Nicad
batteries.
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