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2.4 Environmental
Operating Range: -10˚C to + 50˚C
Storage Range: -40˚C to + 85˚C
Humidity: 95% RH (non-condensing) at 35˚C
Shock: SAE J1378, 55g
Vibration: 5g rms, 5-500 Hz, 2 hours per axis
Protection: 1604CS: IP54
1604FV: IP31 (horizontal mounting)
1608FV: IP54 (Electronics) IP31 (Fan)
2.5 Compliance
1604CS 1604FV 1608FS
UL 1012 UL 1012 UL1012
CAN/CSA-C22.2 No.107.2 CAN/CSA-C22.2 No.107.2 CAN/CSA-C22.2 No.107.2
EN60335-1 EN60335-1 EN60335-1
EN60335-2-29 EN60335-2-29 EN60335-2-29
EN55011 EN55011 EN55011
EN61000-3-3 EN61000-3-3 EN61000-3-3
EN61000-4-2 EN61000-4-2 EN61000-4-2
EN61000-4-3 EN61000-4-3 EN61000-4-3
EN61000-4-4 EN61000-4-4 EN61000-4-4
EN61000-4-5 EN61000-4-5 EN61000-4-5
EN61000-4-6 EN61000-4-6 EN61000-4-6
EN61000-4-8 EN61000-4-8 EN61000-4-8
EN61000-4-11 EN61000-4-11 EN61000-4-11
ENV 50204 ENV 50204 ENV 50204
2.6 Battery Types
All chargers are intended for use with lead acid or gel cell batteries only, for their
respective voltages.
2.7 Charge Cycle Profile
Models 1604 and 1608 use a multi-stage charge cycle, dependent upon battery
geometry, with software programmable set points.
1. Constant Current Mode: Output current is 4.0A max for the 4A models or
8.0A max for the 8A models. Current is held constant until the constant
voltage is reached. Output current is reduced during the Constant Current
Mode if the charger should begin to overheat.
2. Constant Voltage Mode: Output voltage shall be held at an average voltage of
approximately 14.3V for 12V chargers or 28.6V for 24V chargers. The charger
will hold the voltage to within 100mV of this value, reducing the current
gradually until the charging ends. Charging ends when the current falls below
0.5A or the charger remains in Constant Voltage Mode for more than 4 hours.
The charger will shut down and remain in standby.
Curtis 1604/08 Manual
page 3