DOC:
IFR12.8V24AH(4S4P)M5
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6
Features
6.1
Superior “Useable” Capacity
Unlike with lead acid batteries, it is considered practical to regularly use 90% or more of the rated capacity of a
lithium battery bank, and occasionally more
6.2
Extended Cycle Life
in real use, standard quality LiFePo4 batteries can deliver at least 2000 charge/discharge cycles at 80% DoD
and 1C discharge rate, and the remaining capacity remains above 80%. These values are dependent on the
charge rate, the depth of discharge but more importantly on the quality of the cells used.
6.3
Voltage Sag Virtually Non Existant
The discharge curve of lithium batteries (especially relative to lead acid) is essentially flat – meaning that a 20%
charged battery will be providing nearly the same output voltage as an 80% charged battery.
This prevents any issues caused by the “voltage sag” common to lead acid as they discharge, but does mean
that any battery monitor or generator auto-start dependent upon voltage levels will likely not work well at all when
monitoring a lithium bank.
6.4
Size & Weight Advantages
The same capacity battery, lead-acid battery is twice the volume and three times heavier than the iron-lithium
battery
7
Charging Time & Discharging Time
7.1
Charging Time
Item
Specifications
Charge current
0.2C(4.8A)
5A
6A
0.5C(12A)
Charge mode
CC/CV
CC/CV
CC/CV
CC/CV
Charging time
7 hours
6.7 hours
5.6 hours
2.8 hours
7.2 Discharging Time
Item
Specifications
Discharge current
1A
0.1C(2.4A)
0.2C(4.8A)
0.5C(12A)
0.5C(24A)
Discharging time
24 hours
10 hours
5 hours
2 hours
1 hour
