Xantrex Technology RS3000 - Manual (Page 109)

Battery Charging Reference
975-0170-01-01 B–5
Two-Stage Charging
If the two-stage charge is enabled, the charger finishes the absorption
charge but does not go to float mode because some battery manufacturers
advise against floating their batteries. The RS3000 goes into a monitoring
mode instead where the charger monitors the batteries but does not float
them.
A new two-stage charge cycle will be initiated under the same conditions
as for three-stage charging.
Charge Algorithm Graph
Charge Algorithm Definitions
Table B-1 Battery Defaults
Figure B-1 Three-Stage Charging Profile
Voltage Flooded (or wet) Gel AGM
V
A
Absorption Voltage (VDC) 14.4 14.4 14.3
V
G
Gassing Voltage (VDC) 13.5 13.8 13.45
V
F1
Float Voltage (VDC) 13.5 13.8 13.45
V
F2
Float Exit Voltage (VDC) 12.5 12.5 12.5
I H
I
B
V F2
V F1
V G
V
A
Float
Time
T
CV
T
A
T
F
Bulk Absorption