DOC:
IFR12.8V24AH(4S4P)M5
Page
4
Of
9
Pages
4
Battery Specification
No.
Items
Specifications
Remark
4.1
Type
LiFePO4
Lithium iron phosphate
Nominal Capacity
24Ah
4.2
Capacity
Minimum Capacity
23.5Ah
0.2C Standard discharge & new battery status
4.3
Nominal Voltage
12.8V
Means operation voltage
4.4
Operation Voltage
10.8~14.2V
4.5
Absolute Charging
Voltage
14.2
±0.03V
By standard charge method, 3.55V max for unit
cell
4.6
Discharge Cut-off
Voltage
10.8V
2.7V for unit cell
4.7
Voltage
Delivery Voltage
12.8~13.2V
Within 10 days from factory
4.8
Standard Charging
Method
0.2C constant current, 14.2V constant voltage charge to 14.2V, continue charging till
current decline to
≤
0.01C
4.9
0.2C(Standard)
4.8A
Standard charge, charge time about 7.5h(Ref)
4.10
0.5C
12A
Rapid charge, charge time about: 3h(Ref)
4.11
Charge Current
0.5C(Maximum)
12A
For continuous charging mode.
Ambient
temperature 25°C
4.12
0.2C(Standard)
4.8A
constant current discharge to 10.8V
4.13
0.5C
12A
For continuous discharge mode.
Ambient
temperature 25°C
4.14
Discharge Current
2C(Maximum)
24A
The surface temperature of the cells
≤
60°C
4.15
Impedance
Battery Internal
<60mΩ
Internal resistance measured at AC 1KH
Z
new
battery after 50% charge new battery
4.16
Absolute Charge
0~45°C
60
±
25%R.H.
4.17
Absolute Discharge
-20~60°C
60
±
25%R.H.
4.18
Standard Charging
Temperature
25±2°C
4.19
Operation Temperature
and Relative Humidity
Range
Standard Discharging
Temperature
25±2°C
Battery Surface Temperature
Charge at a very low temperature such as below
0°C, will be get a lower capacity and reduce
cycle life of the battery.
Beyond the temperature range of charge and
discharge, the battery must stop working.
4.20
Storage Temperature
for a Long Time
-20~25°C
60
±
25% R.H.
Do not store for more than a year. It must be
charged once in storage for half a year.
4.21
Self-discharge Rate
Per Month
≤3.5%
New battery after stored more than 3 months.
4.22
Shipment Capacity
30% SOC
(≥7.2Ah)
4.23
Weight
About 2.9
±
0.3kg
4.24
Cycle
>1000-2000 times
80% D.O.D.
4.25
Output Terminals
M5
4.26
Maximum Number of
Concatenations
Four in series
The dropout voltage between batteries
≤
0.1V
