© 2020 Sensata Technologies
34
3.0 Setup
◊
Set Final Charge Stage = Float
–
The Float
stage
is a maintenance
charge mode that maintains a constant voltage—while delivering up to
the maximum rated current of the charger in order to power any DC loads
connected to the batteries. Most 3-stage chargers
fi
nish the charge mode in
Float and remain in Float as long as an AC source is available on the input of
the charger. The
fl
oat voltage is determined by the battery type selected in
the
04 Battery Type
menu. Unlike Multi mode, in Float mode there is no Full
Charge feature. See Figure 3-20.
Why would I use the Float Charge Stage?
Float mode is typically used
when the charger is the only charge source connected to the batteries.
This mode will maintain the batteries at the
fl
oat voltage. If using
fl
ooded
batteries and the charger is in
fl
oat for an extended period, the water level
should be checked every two to three weeks for proper levels.
Figure 3-20, Final Charge Stage - Float Stage
Bulk Charging
Absorb Charging
Float Charging
Voltage
Current
Max Charge
Amps
Absorb Done
(= Time, Amps
or SOC)
CU
R
R
E
N
T
&
V
O
LT
A
G
E
TIME
Absorb
Volts
Float
Volts
First Stage
Second Stage
Final Stage
