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Operating in Grid Mode
58
Freedom XC PRO Owner's Guide
NOTICE
BATTERY DAMAGE
Do not mix battery types. The Freedom XC PRO can only select
one battery type setting for all batteries connected to its bank. All
connected batteries should either be: Flooded (or wet)
or
Gel
or
AGM
or
Custom
or
LFP.
Failure to follow these instructions can result in equipment
damage.
3-Stage Charging Algorithm
The Freedom XC PRO will charge batteries in a sequence known
as three-stage charging.Whenever qualified AC power is present
at the inverter/charger’s input, it passes power through to the
connected load and begins charging the batteries. The charging
voltage delivered to the battery depends on the battery’s:
n
Type setting
n
Temperature (by switch setting)
n
State of charge
The three automatic stages are:
n
Bulk
n
Absorption
n
Float
See
for a graph of the three-stage
charging profile.
There is a fourth stage, equalization, which is initialized manually
as it is only performed occasionally and only on flooded (or wet)
batteries.
The charging cycle is a multistage (three-stage) process.
Whenever qualified AC power is present at the inverter/charger’s
input, it passes power through to the connected load and begins
charging the batteries.
Figure 25 Three-Stage Battery Charging Cycle