Three-Stage Charging; Float Only Charging; Charging Voltage Setpoints; Battery Type - Kussmaul Electronics Kussmaul Chief Auto Charge Guide D'utilisation

Three-Stage Charging

Three-Stage Charging

The three-stage charging mode employs the following sequence:
Bulk, Absorption, and Float. During the Bulk stage the
batteries are accepting a constant maximum current. In the
Absorption stage, the battery voltage is held constant and the
current declines. Finally, in the Float stage, the charger continues
to provide voltage at a lower level to maintain the battery in a fully
charged state. If there is no load on the battery, it will typically
draw very little current. The charger, however, is able to provide
current to its full rating to power auxiliary DC loads on the battery.
The charger will restart the charging cycle in the Bulk stage if the
lowest battery voltage of the three banks drops below 12.5 VDC
for 15 minutes. After seven days, the charger will automatically
restart charging in order to refresh the batteries.
Figure 14 Three-Stage Charging Process
lout < 10% lrating
for 1 minute
Battery Voltage
Vbat < 12.5 V
for 15 minutes
Charge
start
BULK ABS
Total ABS timeout FLOAT timeout
Start of
max 8 hrs
max 21 days
charging cycle
36
FLOAT
Time

Float Only Charging

The float-only charging mode maintains a maximum charging
voltage equal to a preset float voltage. A float stage is applied
steadily to the battery.

Charging Voltage Setpoints

The Auto Charge charging process is designed to make the
battery or battery banks reach the following voltage setpoints.
Table 4 Charging Maximum Voltages

Battery Type

Flooded Flooded
GEL
GEL
AGM AGM
ODY Odyssey
LFP LiFEPO
4
Kussmaul Chief Auto Charge Battery Charger Owner's Guide
Absorption Float Equalization
(Volts) (Volts) (Volts)
14.0 13.5 16.0
not
14.3 13.8
applicable
not
14.4 13.4
applicable
not
14.7 13.6
applicable
not
14.6 13.4
applicable