Operating Instruction and Guidelines
1. Discharge
End voltage with different discharge rate must be
less than the specified value. Charge the battery
as soon as possible after discharge.
In order to extend the service life, the depth of
discharge should be less than 60% of the rated
capacity. The discharge over 60% DOD is deep
discharge and would shorten the service life.
2. Temperature
The operation temperature range is -20
℃
--55
℃.
.All the performance data is measured at
ambient temperature of 20
℃
. The optimal
temperature is 20
±
5 , extreme high
temperature would shorten the service life and
very low temperature would lower the capacity
available. The highest acceptable temperature is
55
℃
.
3. Floating charge and Equalization Charge
3.1 Floating charging operation is optimal for gel
battery, battery has been in full charge ensuring
battery maximum service life. The recommended
battery floating charge voltage is 2.24 volts/cell at
20
℃
. The recharge time is about 24 to 36 hour.
Floating charge voltage shall be adjusted
according to the ambient temperature, and
temperature compensate coefficient for battery is
-3.5mV//cell, the specifications is expressed by
the following table.
Table Floating charge at different temperature
Ambient temperature
Float charge (V/cell)
0
℃
2.32
10
℃
2.28
20
℃
2.24
25
℃
2.22
30
℃
2.21
35
℃
2.19
3.2 The batteries need an equalization charge or
supplemental charge in the following
conditions:
Supplemental charge battery after the
installation of battery system and before the
operation.
The batteries are on shelf for six months.
Floating operation for a long time or not
discharge 40% C
20
plus, the batteries need
an equalization charge regularly and the
equalizing charge cycle are 6 months to one
year.
We recommend the below method for equalizing
charge or supplemental charge:
Charge with 2.35Vpc and limited current 0.15C(A)
for 8 to 12 hours (non continuous charging is
allowed).
Charge voltage shall be adjusted according to the
ambient temperature, and temperaturec
ompensate coefficient for battery is -3.5mV//cell,
the specifications is expressed by the following
table.
Table Equalizing voltage at different temperature
Ambient temperature
Float charge (V/cell)
0
℃
2.45
10
℃
2.39
20
℃
2.35
25
℃
2.33
30
℃
2.31
35
℃
2.30
40
℃
2.29
4. Cycle charge characteristic
Cycle charge characteristic curve (at 20
℃
/68
℉
)
Cycle times at different DOD and different
discharge rate
GFMJ(2V) 30%DOD 50%DOD 60%DOD 70%DOD 80%DOD 100%DOD
C
10
3100
1750
1400
1100
850
700
C
20
2810
1600
1300
980
720
580
C
50
2650
1540
1200
850
660
460
C
100
2300
1400
1040
750
600
400
C
120
2080
1290
960
665
520
340
GFMJ(12V) 30%DOD 50%DOD 60%DOD 70%DOD 80%DOD 100%DOD
C
10
2100
1150
900
750
650
550
C
20
1810
1050
820
680
570
470
C
50
1650
850
750
630
510
410
C
100
1400
730
690
550
430
350
C
120
1280
690
610
465
310
290
12
Summary of Contents for 6GFMJ-100
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