Magnum Energy ME-ARC Series Owner's Manual page 34

Setup
◊ Battery Type (LFP)
phosphate battery types and sets the charge voltage levels as shown in Table 3-1—depending on
the nominal inverter battery voltage.
When the LFP battery type has been selected, the charger begins Bulk charging whenever AC
power is connected, and remains in the bulk charge stage until the absorption charge voltage is
achieved. The charger will remain in the absorption charge stage until it is done, which is based
on the Absorb Done: Time, Amps or SOC setting. After the absorption charge is done, the charger
switches to the fl oat charge mode, which allows the charge voltage to fall to the fl oat voltage
level. While fl oat charging, the charger will provide the maximum rated current to the batteries
in order to keep them fully charged and ready if needed by the inverter. The charger will remain
in Float as long as the AC source is available on the input of the charger and the battery voltage
is above the LFP rebulk level. If the voltage drops below the LFP rebulk level (>10 seconds), the
charger restarts the Bulk and Absorption charge stages.
CAUTION: If the LFP battery type has been selected, the BTS is not used in charge
voltage selection.
Info: When
≤12.8V (12-volt
(48-volt systems) must be met for 10 seconds to rebulk.
Info: If the LFP battery type is selected, the 09 Final Charge menu is no longer accessible
and displays "LFP Controlled". This prevents access to other settings that may cause a
charging confl ict.
Info: The LFP battery type selection forces the charger to go into the Bulk charge mode
each time AC is connected. If AC is reconnected less than two minutes after being
disconnected, the charger will return to the previous charge mode.
Page 27
The LFP selection is provided to work specifi cally with lithium iron
–
using the LFP
systems), ≤25.6V
battery type profi le,
(24-volt
© 2021 Magnum Energy, Inc.
the rebulk
systems), or ≤51.2V
level