8
2 or 3 Stage Charging
100%
75%
50%
25%
0%
Bulk
(Constant Current)
Float
(Constant Volts)
Time
Two Stage Charge
Volts
Amps
This charger features user selectable 2 or 3 stage charging. The charging profile is selected by
moving the slide switch on the front panel up to 3 stage or down for 2 stage charging.
A two-stage charger provides a constant current until the battery reaches its rated capacity
and then switches to a “float” voltage. The current then reduces as necessary to maintain
the battery at the float voltage. The charger can be connected to the battery indefinitely and
will provide the appropriate profile. A two-stage charger is recommended in most instances
since it is the most versatile and can be permanently connected to attenuate the characteristic
discharge of unused batteries. A load can be put on the battery or batteries without altering
its ability to keep the battery at optimal charge.
100%
75%
50%
25%
0%
Bulk
(Constant Current)
Absorption
(Constant Volts)
Maintenance
(Constant Volts)
Time
Three Stage Charger
Volts
Amps
this voltage at the output terminals of the unit with a good digital voltmeter. As shipped from
the factory, the unit is preset for a float voltage of 13.6, 27.2 or 36.3 VDC, which is generally
recommended for lead-acid batteries. The output adjust potentiometer is located to the right
of the 2 stage / 3 stage select switch. If you wish to adjust this voltage, reach in with a very
small flat blade screwdriver to rotate the potentiometer. Please Note that this adjusts both the
float and absorption voltages at the same time. Clockwise increases the output voltage, and
counter clockwise decreases it. It is advisable to check with the battery manufacturer before
changing the float voltage.